阅读说明：本技术 电子设备及电子设备的调节方法 (Electronic device and adjusting method thereof ) 是由 李志林 于 2020-12-31 设计创作，主要内容包括：本申请实施例提供了一种电子设备及电子设备的调节方法,涉及显示技术领域,可以改善用户在观看光纤扫描显示器显示的画面时,出现视觉失真的问题。该电子设备包括：光纤扫描显示器,所述光纤扫描显示器用于出射第一激光光束,所述第一激光光束投射的第一显示画面为自由曲面；透镜组,所述第一激光光束进入所述透镜组,并以第二激光光束出射,所述第二激光光束投射的第二显示画面为平面；以及光波导,所述第二激光光束进入所述光波导,经调节以第三激光光束出射,所述第三激光光束投射的第三显示画面为平面。(The embodiment of the application provides electronic equipment and an adjusting method of the electronic equipment, relates to the technical field of display, and can solve the problem of visual distortion when a user watches pictures displayed by an optical fiber scanning display. The electronic device includes: the optical fiber scanning display is used for emitting a first laser beam, and a first display picture projected by the first laser beam is a free-form surface; the first laser beam enters the lens group and is emitted out as a second laser beam, and a second display picture projected by the second laser beam is a plane; and the second laser beam enters the optical waveguide and is adjusted to be emitted as a third laser beam, and a third display picture projected by the third laser beam is a plane.)

1. An electronic device, comprising:

the optical fiber scanning display is used for emitting a first laser beam, and a first display picture projected by the first laser beam is a free-form surface;

the first laser beam enters the lens group and is emitted out as a second laser beam, and a second display picture projected by the second laser beam is a plane; and

and the second laser beam enters the optical waveguide and is adjusted to be emitted as a third laser beam, and a third display picture projected by the third laser beam is a plane.

2. The electronic device according to claim 1, wherein the first laser beam comprises an effective laser beam, the effective laser beam passes through the lens group and the optical waveguide and exits as the third laser beam, and the third display screen projected by the third laser beam has a rectangular shape and a preset aspect ratio.

3. The electronic device according to claim 2, further comprising a light shielding layer disposed on a light exit side of the fiber scanning display, wherein the light shielding layer is configured to shield the laser beams of the first laser beam except the effective laser beam.

4. The electronic device according to claim 2, wherein the lens group is provided on a light exit side of the optical fiber scanning display, and a range of the effective laser beam projected onto the lens group is the same as a range of a light receiving surface of the lens group.

5. The electronic device according to any one of claims 1 to 4, wherein the lens group comprises a first converging lens group, a diverging lens group, and a second converging lens group, which are arranged in this order, in a direction away from a light receiving surface of the lens group;

the first converging lens group is used for converging the first laser beam, the diverging lens group is used for diverging the first laser beam, and the second converging lens group is used for converging the first laser beam and enabling the second laser beam to enter the optical waveguide.

6. The electronic device according to claim 5, wherein the first converging lens group comprises a first converging lens and a second converging lens arranged in this order in a direction away from a light receiving surface of the lens group, the diverging lens group comprises a diverging lens, and the second converging lens group comprises a third converging lens and a fourth converging lens;

the first converging lens, the second converging lens, the third converging lens and the fourth converging lens are used for converging the effective laser beam, and the diverging lens is used for diverging the effective laser beam.

7. The electronic device of any one of claims 1-4, wherein the fiber scanning display comprises a fiber cantilever and a mechanical drive structure that drives the fiber cantilever to scan in a grid pattern.

8. The electronic device of any of claims 1-4, wherein the electronic device is AR glasses, wherein the AR glasses body comprises a frame, and wherein the fiber scanning display and the lens assembly are disposed on the frame.

9. An adjustment method for an electronic device, comprising:

the optical fiber scanning display emits a first laser beam, and a first display picture projected by the first laser beam is a free-form surface;

the lens group receives the first laser beam and emits a second laser beam, and a second display picture projected by the second laser beam is a plane;

the optical waveguide receives the second laser beam and emits a third laser beam, and a third display picture projected by the third laser beam is a plane.

10. The method of claim 9, wherein the first laser beam comprises an effective laser beam, the effective laser beam passes through the lens group and the optical waveguide to exit as the third laser beam, and the third laser beam projects the third display screen with a planar shape and a predetermined ratio of length to width.

Technical Field

The present disclosure relates to display technologies, and particularly to an electronic device and an adjusting method thereof.

Background

In the existing display schemes, display modules such as Liquid Crystal On Silicon (LCOS), Digital Micromirror Device (DMD), multi-partition light distribution independent control light emitting diode (uLED), etc. have been used in the display field. In the optical fiber scanning display, when a user views a displayed picture, certain problems, such as visual distortion, exist.

Disclosure of Invention

The embodiment of the application provides electronic equipment and an adjusting method of the electronic equipment, so that the problems are solved.

In a first aspect, an electronic device is provided, including: an optical fiber scanning display, a lens assembly, and an optical waveguide. The optical fiber scanning display is used for emitting a first laser beam, and a first display picture projected by the first laser beam is a free-form surface. And the first laser beam enters the lens group and is emitted out as a second laser beam, and a second display picture projected by the second laser beam is a plane. And the second laser beam enters the optical waveguide and is emitted as a third laser beam, and a third display picture projected by the third laser beam is a plane.

The second aspect provides an AR glasses, and AR glasses body includes the mirror holder, and fiber scanning display and lens group set up on the mirror holder.

In a third aspect, a method for adjusting an electronic device is provided, including: the optical fiber scanning display emits a first laser beam, and a first display picture projected by the first laser beam is a free-form surface; the lens group receives and reflects the effective laser beam and emits a second laser beam, and a second display picture projected by the second laser beam is a plane; the optical waveguide receives the second laser beam, and is adjusted to emit a third laser beam, and a third display picture projected by the third laser beam is a plane.

In the electronic device and the adjusting method of the electronic device provided by the embodiment of the application, the electronic device includes an optical fiber scanning display, a lens group, and an optical waveguide. The first display picture projected by the effective laser beam emitted from the optical fiber scanning display is a free-form surface, a lens group can be arranged on the light emitting side of the optical fiber scanning display, the lens group can correct the light path of the first laser beam, so that the second display picture projected by the second laser beam emitted from the lens group is a plane, and the third display picture projected by the third laser beam emitted from the lens group is still a plane after the second laser beam is reflected or diffracted by the optical waveguide. When a user watches the whole display screen of the electronic equipment, the user sees the third display screen in a plane surface type instead of the first display screen in a free-form surface, so that the problem of visual distortion when the user watches the display screen of the electronic equipment can be solved. On the basis, the first laser beam emitted from the optical fiber scanning display has good directivity and small divergence angle, so that the first laser beam can be adjusted by utilizing the lens group more conveniently.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 is a prior art display screen with visual distortion;

fig. 2 is a diagram illustrating a positional relationship and an optical path of each component in an electronic device according to an embodiment of the present disclosure;

FIG. 3 is a diagram of an effective laser beam emitted from a fiber scanning display according to an embodiment of the present disclosure;

FIG. 4a is a diagram of an optical path of a second laser beam exiting from a lens group according to an embodiment of the present disclosure;

fig. 4b is a second display screen provided in the embodiment of the present application;

FIG. 5 is a diagram of an optical path of a second laser beam exiting from a lens group according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of a raster scan of a fiber optic cantilever according to an embodiment of the present application;

FIG. 7a is a diagram of an optical path of an effective laser beam emitted from a fiber scanning display according to an embodiment of the present disclosure;

FIG. 7b is a diagram of an effective laser beam emitted from a fiber scanning display according to an embodiment of the present disclosure;

FIG. 8 is a diagram of an effective laser beam emitted from a fiber scanning display according to an embodiment of the present disclosure;

fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present application;

fig. 10 is a flowchart illustrating adjustment of an electronic device according to an embodiment of the present application.

Reference numerals:

10-an electronic device; 11-fiber scanning display; 111-a first laser beam; 12-a lens group; 121-a second laser beam; 122-a first converging lens; 123-a second converging lens; 124-a diverging lens; 125-a third converging lens; 126-a fourth converging lens; 13-an optical waveguide; 14-a light-shielding layer; 15-frame.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. It should be noted that the features of the embodiments of the present application may be combined with each other without conflict.

It is mentioned in the background art that there is also a problem of visual distortion when a user views a picture displayed by a fiber-optic scanning display. The reasons for the visual distortion are: when the optical fiber cantilever of the optical fiber scanning display scans, the scanned track is a free-form surface, and the shape of the picture formed by the light rays emitted from the optical fiber scanning display is the free-form surface shown in fig. 1.

In order to solve the technical problems of the background art, the inventors have studied and proposed the following solutions to improve the problem of visual distortion when a user views a picture displayed by a fiber-optic scanning display.

As shown in fig. 2, an embodiment of the present application provides an electronic device 10, including: a fiber scanning display 11, a lens assembly 12 and an optical waveguide 13. Referring to fig. 3, the fiber scanning display 11 is used to emit a first laser beam 111, and a shape of a first display image projected by the first laser beam is a free-form surface. As shown in fig. 4a, the first laser beam enters the lens group 12 and exits as the second laser beam 121, and the second display screen projected by the second laser beam 121 is a plane (fig. 4 b). The second laser beam enters the optical waveguide 13 and is adjusted to be emitted as a third laser beam 131, and a third display screen projected by the third laser beam 131 is a plane.

In some embodiments, among the first display screen projected by the first laser beam emitted from the fiber scanning display 11, the second display screen projected by the second laser beam 121 emitted from the lens group 12, and the third display screen formed by the third laser beam 131 projected from the optical waveguide 13, the screen actually seen by the user is the third display screen.

In some embodiments, the first laser beam 111 may be entirely incident to the lens group 12; alternatively, a part of the first laser beam 111 is incident on the lens group 12.

In some embodiments, specific components of the lens group 12 and specific parameters of each component are not limited, as long as the second display screen projected by the second laser beam 121 is a plane after the first laser beam 111 entering the lens group 12 exits from the lens group 12 as the second laser beam 121.

The optical paths of the first laser beams emitted from the optical fiber scanning display 11 at each pixel point can be collected, and the specific components of the lens group 12 and the specific parameters of each component can be obtained by fitting with optical software according to the geometrical position relationship between the free-form surface type and the planar surface type formed by the first laser beams and the emission direction of the second laser beams 121. After the first laser beam 111 enters the lens group 12, it may be imaged in the lens group 12 at least once according to the specific composition of the lens group 12.

Alternatively, referring to fig. 5, the lens group 12 includes a first converging lens group, a diverging lens group, and a second converging lens group, which are arranged in this order, in a direction away from the light receiving surface of the lens group 12. The first converging lens group is used for converging the effective laser beam, the diverging lens group is used for diverging the effective laser beam, and the second converging lens group is used for converging the first laser beam and enabling the second laser beam to enter the optical waveguide 13.

The first laser beams can form a reduced image after being converged by the first converging lens group, so that the distance between each first laser beam in the reduced image is reduced along the vertical direction from the light receiving surface to the light emitting surface of the lens group 12, and compared with a first display picture, the shape of the reduced image at the moment is closer to a plane; then, the first laser beam forms an enlarged image through the divergent lens, the enlarged image formed through the divergent lens group is smaller than the image formed by the first laser beam after passing through the first convergent lens group, and the first laser beam is enlarged, so that the watching requirement of a user can be met, and the phenomenon that the picture seen by the user is too small is avoided; finally, the first laser beams are converged again through the second converging lens group, so that the distance between the first laser beams in the reduced image is close to zero along the vertical direction from the light receiving surface to the light emitting surface of the lens group 12, and a second display picture in a plane shape can be obtained, and the second laser beams emitted from the lens group 12 are incident into the optical waveguide 13 as much as possible.

The specific composition of the first converging lens group, the diverging lens group, and the second converging lens group is not limited.

Illustratively, as shown in fig. 5, in a direction away from the light receiving surface of the lens group 12, the lens group 12 includes a first converging lens 122, a second converging lens 123, a diverging lens 124, a third converging lens 125, and a fourth converging lens 126, which are arranged in this order; the first, second, third, and fourth converging lenses 122, 123, 125, and 126 are used to converge the effective laser beam, and the diverging lens is used to diverge the effective laser beam.

The first laser beams can form a reduced image after being converged by the first converging lens 122 and the second converging lens 123, so that the distance between the first laser beams in the reduced image is reduced along the vertical direction from the light receiving surface to the light emitting surface of the lens group 12, and compared with the first display picture, the shape of the reduced image at the moment is closer to a plane; then, the first laser beam passes through the diverging lens 124 to form an enlarged image, and the enlarged image formed by the diverging lens 124 is smaller than the image formed by the first laser beam after passing through the first converging lens 122; finally, the first laser beams are converged again by the third converging lens 125 and the fourth converging lens 126, so that the distance between the first laser beams in the reduced image is close to zero along the vertical direction from the light receiving surface to the light emitting surface of the lens group 12, and a second display picture in a planar shape can be obtained, and the second laser beams emitted from the lens group 12 are incident into the optical waveguide 13 as much as possible.

In some embodiments, the optical waveguide 13 may adjust the optical path of the second laser beam, the optical waveguide 13 including an optical waveguide body, a coupling-in grating, and a coupling-out grating. The optical waveguide body may be a diffraction type or a total reflection type.

If the optical waveguide 13 is a diffraction type, the second laser beam 121 enters the optical waveguide 13 through the coupling grating, and then can be diffracted in the optical waveguide 13, and finally exits as a third laser beam 131 through the coupling grating; if the optical waveguide 13 is of a total reflection type, the second laser beam 121 enters the optical waveguide 13 through the coupling grating, is diffracted in the optical waveguide 13, and finally exits as the third laser beam 131 through the coupling grating.

In some embodiments, the fiber scanning display 11 may include a fiber cantilever and a mechanical driving structure, and the mechanical driving structure may drive the fiber cantilever to scan.

Alternatively, as shown in FIG. 6, the mechanical drive mechanism may drive the fiber optic cantilever to scan in a grid pattern. In this case, the mechanical drive structure may for example comprise a plurality of piezoelectric structures or a plurality of electromagnets.

The plurality of piezoelectric structures are respectively arranged above, below, left side and right side of the optical fiber cantilever, or the plurality of electromagnets are respectively arranged above, below, left side and right side of the optical fiber cantilever.

Use mechanical drive structure to include a plurality of piezoelectric structure as an example, piezoelectric structure is including the first electrode layer that stacks gradually the setting, the piezoelectric material layer, the second electrode layer, utilize inverse piezoelectric effect, to first electrode layer and second electrode layer input voltage, make the piezoelectric material layer take place deformation, the piezoelectric material layer takes place deformation, drive whole piezoelectric structure and take place deformation, and then make the motion of optic fibre cantilever, through adjusting the voltage that acts on a plurality of piezoelectric structure, with the direction of motion of adjusting the optic fibre cantilever, thereby make the optic fibre cantilever realize grid type scanning.

Taking the example that the mechanical driving structure comprises a plurality of electromagnets, under the action of the electromagnets, the optical fiber cantilever can move towards the electromagnets or away from the electromagnets, and the magnetic property and the magnetic field strength of the electromagnets are adjusted, so that the optical fiber cantilever can realize grid-type scanning.

On this basis, the fiber scanning display 11 may further include a mechanical controller, and the mechanical controller may be controlled by the mechanical controller when a Power Management IC (PMIC) provides a Power supply voltage to the mechanical driving structure.

In some embodiments, the fiber scanning display 11 may further include a light source that may emit laser light as the display light of the fiber scanning display 11, and a control chip that may control the brightness of the laser light emitted by the light source.

In some embodiments, as shown in fig. 3, the shape of the first display screen is not limited, and the shape of the first display screen is related to the displacement trajectory of the fiber cantilever. For example, the shape of the first display screen may be a hemispherical surface, a semi-ellipsoidal surface, a parabolic surface, an irregular curved surface, or the like. In some embodiments, as shown in fig. 4a, the specific shape of the second display screen is not limited as long as the shape of the second display screen is a plane. For example, the shape of the second display screen may be rectangular, circular, elliptical, or the like.

On the basis, after the second laser beam 121 enters the optical waveguide 13, total reflection or diffraction is emitted in the optical waveguide 13, and the path components of the second laser beam 121, which is subjected to total reflection or diffraction, in the vertical direction along the vertical direction between the light incident surface of the optical waveguide 13 and the light emitting surface of the optical waveguide 13 are the same, so that the third display screen is still planar.

In some embodiments, the use of the electronic device 10 is not limited, for example, the electronic device may be applied to a smart wearable device, a smart home device, or the like. The intelligent wearable device may be, for example, an Augmented Reality (AR), a Virtual Reality technology (VR), a smart watch, and the like, and the smart home device may be a smart television, a smart control panel, and the like.

In some embodiments, the relative position relationship among the fiber scanning display 11, the lens group 12, and the optical waveguide 13 is related to the application of the electronic device 10, and the relative position relationship among the three is not limited as long as the first laser beam emitted from the fiber scanning display 11 can be incident on the lens group 12, and the second laser beam 121 emitted from the lens group 12 can be incident on the optical waveguide 13. Fig. 2 shows a relative positional relationship among the fiber scanning display 11, the lens assembly 12, and the optical waveguide 13, but the relative positional relationship among the three may be other.

The embodiment of the application provides an electronic device 10, and the electronic device 10 comprises an optical fiber scanning display 11, a lens group 12 and an optical waveguide 13. The first display image projected by the first laser beam emitted from the optical fiber scanning display 11 is a free-form surface, the lens group 12 may be disposed on the light emitting side of the optical fiber scanning display 11, and the lens group 12 may correct the optical path of the first laser beam, so that the second display image projected by the second laser beam 121 emitted from the lens group 12 is a plane, and then the third display image projected by the third laser beam 131 is still a plane after the second laser beam 121 is reflected or diffracted by the optical waveguide 13. When the user views the display screen of the electronic device 10 as a whole, the user views the third display screen in a planar form, instead of the first display screen in a free-form surface, so that the problem of visual distortion when the user views the display screen of the electronic device 10 can be improved. On this basis, the first laser beam 111 emitted from the fiber scanning display 11 has good directivity and a small divergence angle, and therefore, the lens group 12 is more convenient to adjust the first laser beam 111.

Optionally, the first laser beam includes an effective laser beam, the effective laser beam passes through the lens group 12 and the optical waveguide 13, and is emitted as a third laser beam, and a third display image projected by the third laser beam has a rectangular shape and a preset length-width ratio.

The preset ratio may be 4:3, for example, so that the user can view a 4:3 display screen, a 16:9 display screen, a 1:1 display screen, and the like. Of course, the preset ratio may be other ratios, and this is not particularly limited in this embodiment of the present application.

In some embodiments, if the shape of the third display frame projected by the third laser beam emitted after the first laser beam passes through the lens assembly 12 and the optical waveguide 13 is rectangular, and the length-width ratio of the third display frame is a preset ratio, the effective laser beam may be equal to the first laser beam; if the shape of the third display screen projected by the third laser beam emitted after the first laser beam passes through the lens group 12 and the optical waveguide 13 is not rectangular, the effective laser beam may be a part of the first laser beam.

The effective laser beam is a light beam actually incident to the lens group 12 in the first laser beam.

In the embodiment of the present application, the shape of the third display screen is adjusted to be a rectangle, and the aspect ratio of the rectangle is adjusted to be a preset ratio, so that the display requirements of different electronic devices 10 and the viewing requirements of different users can be met.

The third display image is projected by the third laser beam 131, the third laser beam 131 is a light beam of the second laser beam 121 diffracted or reflected by the optical waveguide 13, and the second laser beam 121 is a light beam of the effective laser beam emitted through the lens assembly 12. Therefore, the specific shape of the third display screen can be controlled by the effective laser beam entering the lens group 12.

Optionally, as shown in fig. 7a and 7b, the electronic device 10 further includes a light shielding layer 14, the light shielding layer 14 is disposed on the light emitting side of the optical fiber scanning display 11, and the light shielding layer 14 is configured to shield the laser beams other than the effective laser beam in the first laser beam 111.

The light shielding layer 14 can shield light beams other than the effective laser beam in the first laser beam 111 from being absorbed or reflected by the light shielding layer 14 and not emitted from the optical fiber scanning display 11. In this way, the position of the light shielding layer 14 can be adjusted to specify the portion of the first laser beam 111 that is an effective laser beam, and the shape of the third display screen can be adjusted.

Here, since the divergence angle of the first laser beam 111 emitted from the fiber scanning display 11 is small, the effective laser beam is substantially a small-angle light. In the light emitted from the portion of the optical fiber scanning display 11 that is not shielded by the light shielding layer 14 and is closer to the light shielding layer 14, the divergence angle of the portion having a certain divergence angle is smaller, and the light intensity is smaller, so that under the interference of the ambient light, the third display image actually seen by the user is a rectangle with the length-width ratio of the rectangle being the preset proportion, and other light rays can be ignored.

In some embodiments, the specific arrangement position of the light shielding layer 14 is not limited as long as the third display screen is a rectangle, and the aspect ratio of the rectangle satisfies the preset ratio.

For example, as shown in fig. 7a, the fiber scanning display 11 includes a display area and a frame area located at the periphery of the display area, and the light shielding layer 14 may be disposed in an edge area of the display area near the frame area; as shown in fig. 7b, the light shielding layer 14 may be disposed in a half-complete display region.

In order to make the first laser beam 111 more applied to the display to reduce the power consumption of the fiber scanning display 11 under the same display brightness, the light shielding layer 14 may be optionally disposed in the edge area of the display area near the frame area, and the light shielding layer 14 may cover the display area of the fiber scanning display 11 as little as possible.

In the embodiment of the application, the light shielding layer 14 can shield other light beams in the first laser beam 111 except the effective laser beam, and only the effective laser beam is emitted and used for displaying, so that the third display frame is rectangular, and the aspect ratio of the rectangle satisfies the preset ratio.

Alternatively, as shown in fig. 8, the lens group 12 is disposed on the light outgoing side of the optical fiber scanning display 11, and the range of the effective laser beam projected onto the lens group 12 is the same as the range of the light receiving surface of the lens group 12.

The range of the effective laser beam that can be incident into the lens group 12 among the first laser beams 111 can be adjusted by adjusting the relative positional relationship of the lens group 12 and the fiber scanning display 11, and the position of the light receiving surface of the lens group 12 in the lens group 12.

In the embodiment of the present application, the range of the effective laser beam projected onto the lens group 12 is the same as the range of the light receiving surface of the lens group 12, so that the effective laser beam is incident on the lens group 12, and light rays of the first laser beam 111 except the effective laser beam are prevented from entering the lens group 12.

In addition, only the effective laser beam in the first laser beam 111 may be made to enter the lens group 12 in other manners for displaying, which is not particularly limited in the embodiment of the present application.

As shown in fig. 9, the electronic device 10 may be AR glasses.

On this basis, the AR glasses body includes a frame 15, and the fiber scanning display 11 and the lens group 12 are disposed on the frame 15.

In some embodiments, the specific arrangement positions of the fiber scanning display 11 and the lens group 12 are not limited. The fiber scanning display 11 and the lens assembly 12 may be disposed at different positions of the frame 15, wherein the lens assembly 12 may be disposed adjacent to the optical waveguide 13.

In order to avoid viewing the optical fiber scanning display 11 and the lens group 12 in the range of the remaining light of the user, thereby affecting the viewing experience of the user, the embodiment of the present application may set the optical fiber scanning display 11 and the lens group 12 to the positions far away from the lens frame as far as possible without affecting the incidence of the effective laser beam to the lens group 12 and the incidence of the second laser beam 121 to the optical waveguide 13. For example, when the user wears AR glasses, the fiber scan display 11 and the lens group 12 are positioned behind the brain at the frame.

In some embodiments, the optical waveguide 13 may be disposed on the lens holder 15, or may be disposed at other positions of the AR glasses body, as long as the third laser beam 131 exiting from the optical waveguide 13 can be incident to the human eye.

Alternatively, the optical waveguide 13 may be provided on the frame. Therefore, the third display picture can be directly presented to human eyes, and user experience is improved.

In addition, the AR glasses may further include a main control chip, a video adjusting module, an audio adjusting module, bluetooth, a Wireless-Fidelity (WiFi for short) module, and the like. The main control chip is used for coordinating the work of each device in the AR glasses.

As shown in fig. 10, an embodiment of the present application further provides an adjusting method for an electronic device, including:

s110, the optical fiber scanning display 11 emits a first laser beam 111, and a first display image projected by the first laser beam is a free-form surface.

In some embodiments, the first laser beam 111 may be entirely incident to the lens group 12; alternatively, a part of the first laser beam 111 is incident on the lens group 12.

In some embodiments, as shown in fig. 3, the shape of the first display screen is not limited, and the shape of the first display screen is related to the displacement trajectory of the fiber cantilever. For example, the shape of the first display screen may be a hemispherical surface, a semi-ellipsoidal surface, a parabolic surface, an irregular curved surface, or the like.

S120, the lens assembly 12 receives the first laser beam and emits a second laser beam 121, and a second display image projected by the second laser beam 121 is a plane.

In some embodiments, specific components of the lens group 12 and specific parameters of each component are not limited, as long as the second display screen projected by the second laser beam 121 is a plane after the first laser beam 111 entering the lens group 12 exits from the lens group 12 as the second laser beam 121.

The optical paths of the first laser beams emitted from the optical fiber scanning display 11 at each pixel point can be collected, and the specific components of the lens group 12 and the specific parameters of each component can be obtained by fitting with optical software according to the geometrical position relationship between the free-form surface type and the planar surface type formed by the first laser beams and the emission direction of the second laser beams 121. After the first laser beam 111 enters the lens group 12, it may be imaged in the lens group 12 at least once according to the specific composition of the lens group 12.

Illustratively, as shown in fig. 5, in a direction away from the light receiving surface of the lens group 12, the lens group 12 includes a first converging lens 122, a second converging lens 123, a diverging lens 124, a third converging lens 125, and a fourth converging lens 126, which are arranged in this order; the first, second, third, and fourth converging lenses 122, 123, 125, and 126 are used to converge the effective laser beam, and the diverging lens is used to diverge the effective laser beam.

The first laser beams can form a reduced image after being converged by the first converging lens 122 and the second converging lens 123, so that the distance between the first laser beams in the reduced image is reduced along the vertical direction from the light receiving surface to the light emitting surface of the lens group 12, and compared with the first display picture, the shape of the reduced image at the moment is closer to a plane; then, the first laser beam passes through the diverging lens 124 to form an enlarged image, and the enlarged image formed by the diverging lens 124 is smaller than the image formed by the first laser beam after passing through the first converging lens 122; finally, the first laser beams are converged again through the third converging lens 125 and the fourth converging lens 126, so that the distance between the first laser beams in the reduced image is close to zero along the vertical direction from the light receiving surface to the light emitting surface of the lens group 12, and a second display picture in a plane shape can be obtained.

In some embodiments, as shown in fig. 4a, the specific shape of the second display screen is not limited as long as the shape of the second display screen is a plane. For example, the shape of the second display screen may be rectangular, circular, elliptical, or the like.

S130, the optical waveguide 13 receives and modulates the second laser beam 121 and emits a third laser beam 131, and a third display screen projected by the third laser beam 131 is a plane.

In some embodiments, among the first display screen projected by the first laser beam emitted from the fiber scanning display 11, the second display screen projected by the second laser beam 121 emitted from the lens group 12, and the third display screen projected by the third laser beam 131 emitted from the optical waveguide 13, the screen actually seen by the user is the third display screen.

In some embodiments, the optical waveguide 13 may adjust the optical path of the second laser beam, the optical waveguide 13 including an optical waveguide body, a coupling-in grating, and a coupling-out grating. The optical waveguide body may be a diffraction type or a total reflection type.

If the optical waveguide 13 is a diffraction type, the second laser beam 121 enters the optical waveguide 13 through the coupling grating, and then can be diffracted in the optical waveguide 13, and finally exits as a third laser beam 131 through the coupling grating; if the optical waveguide 13 is of a total reflection type, the second laser beam 121 enters the optical waveguide 13 through the coupling grating, is diffracted in the optical waveguide 13, and finally exits as the third laser beam 131 through the coupling grating.

In some embodiments, since the shape of the second display frame formed by the second laser beam 121 is a plane, and after the second laser beam 121 enters the optical waveguide 13, total reflection or diffraction is emitted in the optical waveguide 13, along a vertical direction between the incident surface of the optical waveguide 13 and the exit surface of the optical waveguide 13, a path component of the second laser beam 121 in the vertical direction, which is subjected to total reflection or diffraction, is the same, and thus, the third display frame is still a plane.

The embodiment of the application provides an adjusting method of an electronic device 10, and the electronic device 10 includes an optical fiber scanning display 11, a lens group 12, and an optical waveguide 13. The first display image projected by the first laser beam emitted from the optical fiber scanning display 11 is a free-form surface, the lens group 12 may be disposed on the light emitting side of the optical fiber scanning display 11, and the lens group 12 may correct the optical path of the first laser beam, so that the second display image projected by the second laser beam 121 emitted from the lens group 12 is a plane, and then the third display image projected by the third laser beam 131 is still a plane after the second laser beam 121 is reflected or diffracted by the optical waveguide 13. When the user views the display screen of the electronic device 10 as a whole, the user views the third display screen in a planar form, instead of the first display screen in a free-form surface, so that the problem of visual distortion when the user views the display screen of the electronic device 10 can be improved. On this basis, the first laser beam 111 emitted from the fiber scanning display 11 has good directivity and a small divergence angle, and therefore, the lens group 12 is more convenient to adjust the first laser beam 111.

Optionally, the first laser beam includes an effective laser beam, the effective laser beam passes through the lens group 12 and the optical waveguide 13, and is emitted as a third laser beam, and a third display image projected by the third laser beam has a planar shape and a preset length-width ratio.

The preset ratio may be 4:3, for example, so that the user can view a 4:3 display screen, a 16:9 display screen, a 1:1 display screen, and the like. Of course, the preset ratio may be other ratios, and this is not particularly limited in this embodiment of the present application.

In some embodiments, if the shape of the third display frame projected by the third laser beam emitted after the first laser beam passes through the lens assembly 12 and the optical waveguide 13 is rectangular, and the length-width ratio of the third display frame is a preset ratio, the effective laser beam may be equal to the first laser beam; if the shape of the third display screen projected by the third laser beam emitted after the first laser beam passes through the lens group 12 and the optical waveguide 13 is not rectangular, the effective laser beam may be a part of the first laser beam.

The effective laser beam is a light beam actually incident to the lens group 12 in the first laser beam.

In the embodiment of the present application, the shape of the third display screen is adjusted to be a rectangle, and the aspect ratio of the rectangle is adjusted to be a preset ratio, so that the display requirements of different electronic devices 10 and the viewing requirements of different users can be met.

On the basis, the third display screen is projected by the third laser beam 131, the third laser beam 131 is a light beam of the second laser beam 121 diffracted or reflected by the optical waveguide 13, and the second laser beam 121 is a light beam of the effective laser beam emitted through the lens assembly 12. Therefore, the specific shape of the third display screen can be controlled by the effective laser beam entering the lens group 12.

Optionally, as shown in fig. 7a and 7b, the electronic device 10 further includes a light shielding layer 14, the light shielding layer 14 is disposed on the light emitting side of the optical fiber scanning display 11, and the light shielding layer 14 is configured to shield the laser beams other than the effective laser beam in the first laser beam 111.

The light shielding layer 14 can shield light beams other than the effective laser beam in the first laser beam 111 from being absorbed or reflected by the light shielding layer 14 and not emitted from the optical fiber scanning display 11. In this way, the position of the light shielding layer 14 can be adjusted to specify the portion of the first laser beam 111 that is an effective laser beam, and the shape of the third display screen can be adjusted.

Here, since the divergence angle of the first laser beam 111 emitted from the fiber scanning display 11 is small, the effective laser beam is substantially a small-angle light. In the light emitted from the portion of the optical fiber scanning display 11 that is not shielded by the light shielding layer 14 and is closer to the light shielding layer 14, the divergence angle of the portion having a certain divergence angle is smaller, and the light intensity is smaller, so that under the interference of the ambient light, the third display image actually seen by the user is a rectangle with the length-width ratio of the rectangle being the preset proportion, and other light rays can be ignored.

In some embodiments, the specific arrangement position of the light shielding layer 14 is not limited as long as the third display screen is a rectangle, and the aspect ratio of the rectangle satisfies the preset ratio.

For example, as shown in fig. 7a, the fiber scanning display 11 includes a display area and a frame area located at the periphery of the display area, and the light shielding layer 14 may be disposed in an edge area of the display area near the frame area; as shown in fig. 7b, the light shielding layer 14 may be disposed in a half-complete display region.

In order to make the first laser beam 111 more applied to the display to reduce the power consumption of the fiber scanning display 11 under the same display brightness, the light shielding layer 14 may be optionally disposed in the edge area of the display area near the frame area, and the light shielding layer 14 may cover the display area of the fiber scanning display 11 as little as possible.

In the embodiment of the application, the light shielding layer 14 can shield other light beams in the first laser beam 111 except the effective laser beam, and only the effective laser beam is emitted and used for displaying, so that the third display frame is rectangular, and the aspect ratio of the rectangle satisfies the preset ratio.

Alternatively, as shown in fig. 8, the lens group 12 is disposed on the light outgoing side of the optical fiber scanning display 11, and the range of the effective laser beam projected onto the lens group 12 is the same as the range of the light receiving surface of the lens group 12.

The range of the effective laser beam that can be incident into the lens group 12 among the first laser beams 111 can be adjusted by adjusting the relative positional relationship of the lens group 12 and the fiber scanning display 11, and the position of the light receiving surface of the lens group 12 in the lens group 12.

In the embodiment of the present application, the range of the effective laser beam projected onto the lens group 12 is the same as the range of the light receiving surface of the lens group 12, so that the effective laser beam is incident on the lens group 12, and light rays of the first laser beam 111 except the effective laser beam are prevented from entering the lens group 12.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not necessarily depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.