阅读说明：本技术 灯具、发光模块与其组合式透镜 (Lamp, light-emitting module and combined lens thereof ) 是由 张文龙 许嘉斌 于 2019-11-05 设计创作，主要内容包括：本发明公开一种灯具、发光模块与其组合式透镜,所述组合式透镜包括相对位置保持固定的第一透镜部与第二透镜部。第一透镜部包含能用来反射光线的环侧面、位于环侧面内侧的入射面、及位于入射面相反侧的出射面。第二透镜部包含位于相反两侧的光扩散面与出光面,并且光扩散面是与出射面彼此相向且间隔地设置。光扩散面形成有多个光扩散微结构,并且多个光扩散微结构位在出射面正投影于光扩散面的投影区域上。所述入射面用来供一光线穿过而进入组合式透镜,以使组合式透镜内的光线能穿过出射面与多个光扩散微结构、而自出光面射出组合式透镜。据此,通过将多个光扩散微结构形成于组合式透镜的内侧,以有效地避免受到外在因素影响。(The invention discloses a lamp, a light-emitting module and a combined lens thereof. The first lens part comprises a ring side surface capable of reflecting light, an incident surface positioned on the inner side of the ring side surface, and an emergent surface positioned on the opposite side of the incident surface. The second lens part comprises a light diffusion surface and a light emergent surface which are positioned at two opposite sides, and the light diffusion surface and the light emergent surface are arranged opposite to each other at intervals. The light diffusion surface is formed with a plurality of light diffusion microstructures, and a plurality of light diffusion microstructures are located on the projection area of the emergent surface orthographic projection on the light diffusion surface. The incident surface is used for allowing a light ray to pass through and enter the combined lens, so that the light ray in the combined lens can pass through the emergent surface and the plurality of light diffusion microstructures and is emitted out of the combined lens from the emergent surface. Accordingly, the light diffusion microstructures are formed on the inner side of the combined lens, so that the combined lens is effectively prevented from being influenced by external factors.)

1. A combined lens of a light emitting module, comprising:

a first lens part including a ring side surface capable of reflecting light, an incident surface located inside the ring side surface, and an exit surface located on the opposite side of the incident surface; wherein, the incident surface surrounds and forms a groove-shaped space; and

a second lens portion whose relative position with the first lens portion is kept fixed, and which includes:

a light diffusion surface facing the emergent surface and spaced from the emergent surface; the light diffusion surface is provided with a plurality of light diffusion microstructures, and the plurality of light diffusion microstructures are positioned on a projection area of the light diffusion surface, wherein the projection area is orthographic projected on the emergent surface; and

a light-emitting surface, which is located on the opposite sides of the second lens part with the light diffusion surface;

the incident surface is used for allowing a light ray to pass through and enter the combined lens, so that the light ray in the combined lens can pass through the emergent surface and the plurality of light diffusion microstructures and is emitted out of the combined lens from the emergent surface.

2. The combined lens of claim 1, wherein a distance between the light diffusing surface and the light exit surface is not greater than a distance between the light diffusing surface and the light exit surface.

3. The combined lens of claim 1, wherein a gas-phase medium layer is disposed between the light diffusing surface and the exit surface, and the light diffusing microstructures are exposed from the gas-phase medium layer.

4. The lens assembly of claim 1, further comprising a light transmissive adhesive layer filled between the light diffusing surface and the exit surface, wherein the light diffusing microstructures are embedded in the adhesive layer.

5. The combined lens of claim 1, wherein the combined lens does not have any light-diffusing microstructures formed on the ring-side surface and the light-exiting surface.

6. A light module, comprising:

a combined lens, comprising:

a first lens part including a ring side surface capable of reflecting light, an incident surface located inside the ring side surface, and an exit surface located on the opposite side of the incident surface; wherein, the incident surface surrounds and forms a groove-shaped space; and

a second lens portion whose relative position with the first lens portion is kept fixed, and which includes:

a light diffusion surface facing the emergent surface and spaced from the emergent surface; the light diffusion surface is provided with a plurality of light diffusion microstructures, and the plurality of light diffusion microstructures are positioned on a projection area of the light diffusion surface, wherein the projection area is orthographic projected on the emergent surface; and

a light-emitting surface, which is located on the opposite sides of the second lens part with the light diffusion surface; and

a light emitting unit, configured to emit a light toward the incident surface of the first lens portion, wherein the light entering the combined lens through the incident surface can pass through the exit surface and the plurality of light diffusion microstructures, and exit the combined lens through the exit surface.

7. The lighting module of claim 6, wherein said combination lens defines a central axis, said lighting unit lying on said central axis but outside said trough-like space.

8. The lighting module of claim 6, wherein the combination lens defines a central axis, the lighting unit falls on the central axis, and at least a portion of the lighting unit is located within the trough-like space.

9. A light fixture, the light fixture comprising:

a combined lens, comprising:

a first lens part including a ring side surface capable of reflecting light, an incident surface located inside the ring side surface, and an exit surface located on the opposite side of the incident surface; wherein, the incident surface surrounds and forms a groove-shaped space; and

a second lens portion whose relative position with the first lens portion is kept fixed, and which includes:

a light diffusion surface facing the emergent surface and spaced from the emergent surface; the light diffusion surface is provided with a plurality of light diffusion microstructures, and the plurality of light diffusion microstructures are positioned on a projection area of the light diffusion surface, wherein the projection area is orthographic projected on the emergent surface; and

a light-emitting surface, which is located on the opposite sides of the second lens part with the light diffusion surface;

a light emitting unit for emitting a light toward the incident surface of the first lens portion; and

the bearing seat is used for being detachably arranged on an external power supply; the light-emitting unit is fixedly and electrically coupled to the bearing seat, and the combined lens is mounted on the bearing seat and positioned on one side of the light-emitting unit;

when the bearing seat obtains electric power from the external power supply and drives the light-emitting unit to emit the light towards the incident surface, the light which passes through the incident surface and enters the combined lens can pass through the emergent surface and the plurality of light diffusion microstructures and be emitted out of the combined lens from the emergent surface.

10. The lamp of claim 9, wherein the second lens portion includes a transparent plate and a rim formed on a periphery of the transparent plate, the light-diffusing surface is located on an inner surface of the transparent plate, the light-emitting surface is located on an outer surface of the transparent plate, the light-emitting surface of the first lens portion and a portion of the rim side surface adjacent to the light-emitting surface are located in a space surrounded by the rim, and the rim of the second lens portion is fastened to the holder.

Technical Field

The present disclosure relates to lenses, and particularly to a lamp, a light emitting module and a lens assembly thereof.

Background

In order to make the emitted light uniform, most of the existing lenses are subjected to light diffusion treatment on the outer part (such as a light-emitting surface) of the lens. However, the light diffusion portion formed by the conventional lens is easily affected by external factors, and the uniformity effect is weakened.

Disclosure of Invention

Embodiments of the present invention provide a lamp, a light emitting module and a lens assembly thereof, which can effectively overcome the defects of the conventional lens.

The embodiment of the invention discloses a lamp, which comprises: a combined lens, comprising: a first lens part including a ring side surface capable of reflecting light, an incident surface located inside the ring side surface, and an exit surface located on the opposite side of the incident surface; wherein, the incident surface surrounds and forms a groove-shaped space; and a second lens portion, the relative position of which with the first lens portion is kept fixed, and the second lens portion includes: a light diffusion surface facing the emergent surface and spaced from the emergent surface; the light diffusion surface is provided with a plurality of light diffusion microstructures, and the plurality of light diffusion microstructures are positioned on a projection area of the light diffusion surface, wherein the projection area is orthographic projected on the emergent surface; and a light-emitting surface, which is located on the opposite sides of the second lens part with the light diffusion surface; a light emitting unit for emitting a light toward the incident surface of the first lens portion; the bearing seat is used for being detachably arranged on an external power supply; the light-emitting unit is fixedly and electrically coupled to the bearing seat, and the combined lens is mounted on the bearing seat and positioned on one side of the light-emitting unit; when the bearing seat obtains electric power from the external power supply and drives the light-emitting unit to emit the light towards the incident surface, the light which passes through the incident surface and enters the combined lens can pass through the emergent surface and the plurality of light diffusion microstructures and be emitted out of the combined lens from the emergent surface.

Preferably, the second lens portion includes a transparent plate and a side ring formed on a periphery of the transparent plate, the light diffusing surface is located on an inner surface of the transparent plate, the light emitting surface is located on an outer surface of the transparent plate, the emitting surface of the first lens portion and a part of the side surface of the ring adjacent to the emitting surface are located in a space surrounded by the side ring, and the side ring of the second lens portion is fastened to the carrier.

The embodiment of the invention also discloses a light-emitting module, which comprises: a combined lens, comprising: a first lens part including a ring side surface capable of reflecting light, an incident surface located inside the ring side surface, and an exit surface located on the opposite side of the incident surface; wherein, the incident surface surrounds and forms a groove-shaped space; and a second lens portion, the relative position of which with the first lens portion is kept fixed, and the second lens portion includes: a light diffusion surface facing the emergent surface and spaced from the emergent surface; the light diffusion surface is provided with a plurality of light diffusion microstructures, and the plurality of light diffusion microstructures are positioned on a projection area of the light diffusion surface, wherein the projection area is orthographic projected on the emergent surface; and a light-emitting surface, which is located on the opposite sides of the second lens part with the light diffusion surface; and a light emitting unit for emitting a light toward the incident surface of the first lens portion, wherein the light passing through the incident surface and entering the combined lens can pass through the exit surface and the plurality of light diffusion microstructures and exit the combined lens from the exit surface.

Preferably, the combined lens defines a central axis, and the light emitting unit falls on the central axis but is located outside the groove-like space.

Preferably, the combined lens defines a central axis, the light emitting unit falls on the central axis, and at least part of the light emitting unit is located in the groove-like space.

The embodiment of the invention also discloses a combined lens of a light-emitting module, which comprises: a first lens part including a ring side surface capable of reflecting light, an incident surface located inside the ring side surface, and an exit surface located on the opposite side of the incident surface; wherein, the incident surface surrounds and forms a groove-shaped space; and a second lens portion, the relative position of which with the first lens portion is kept fixed, and the second lens portion includes: a light diffusion surface facing the emergent surface and spaced from the emergent surface; the light diffusion surface is provided with a plurality of light diffusion microstructures, and the plurality of light diffusion microstructures are positioned on a projection area of the light diffusion surface, wherein the projection area is orthographic projected on the emergent surface; and a light-emitting surface, which is located on the opposite sides of the second lens part with the light diffusion surface; the incident surface is used for allowing a light ray to pass through and enter the combined lens, so that the light ray in the combined lens can pass through the emergent surface and the plurality of light diffusion microstructures and is emitted out of the combined lens from the emergent surface.

Preferably, a distance between the light diffusion surface and the light emitting surface is not greater than a distance between the light diffusion surface and the light emitting surface.

Preferably, a gas-phase dielectric layer is disposed between the light diffusion surface and the exit surface of the combined lens, and the plurality of light diffusion microstructures are exposed out of the gas-phase dielectric layer.

Preferably, the combined lens further includes a light-transmitting adhesive layer filled between the light-diffusing surface and the exit surface, and the plurality of light-diffusing microstructures are embedded in the light-transmitting adhesive layer.

Preferably, the combined lens does not have any light diffusion microstructures formed on the ring side surface and the light-emitting surface.

In summary, in the lamp, the light emitting module and the combined lens thereof disclosed in the embodiments of the invention, the light diffusing microstructures are formed inside the combined lens (and located in the projection area), so that the light beam passing through the exit surface of the first lens portion can be homogenized and softened by the light diffusing microstructures, and the light diffusing microstructures are less susceptible to the influence of factors other than the combined lens, thereby effectively ensuring the optical effect of the combined lens.

For a better understanding of the nature and technical content of the present invention, reference should be made to the following detailed description of the invention and the accompanying drawings, which are provided for illustration purposes only and are not intended to limit the scope of the invention in any way.

Drawings

Fig. 1 is a schematic view of a lamp according to a first embodiment of the invention.

Fig. 2 is a schematic cross-sectional view of fig. 1.

Fig. 3 is a partially enlarged view of fig. 2.

Fig. 4 is an exploded view of a combined lens according to a first embodiment of the invention.

Fig. 5 is a schematic view of a combined lens according to a second embodiment of the invention.

Fig. 6 is a schematic view of a light emitting module according to a third embodiment of the present invention.

Fig. 7 is a schematic view of a combined lens according to a fourth embodiment of the invention.

Detailed Description

Please refer to fig. 1 to 7, which are exemplary embodiments of the present invention, and it should be noted that, in the embodiments, related numbers and shapes mentioned in the accompanying drawings are only used for describing the embodiments of the present invention in detail, so as to facilitate the understanding of the contents of the present invention, and not for limiting the scope of the present invention.

[ example one ]

Referring to fig. 1 to fig. 4, the present embodiment discloses a lamp 1000, and the lamp 1000 is illustrated as a bulb in the present embodiment, but the invention is not limited thereto. The lamp 1000 includes a combined lens 100, a light emitting unit 200 corresponding to the combined lens 100, and a holder 300 for mounting the combined lens 100 and the light emitting unit 200. Moreover, the combined lens 100 adopted by the lamp 1000 of the present embodiment is preferably suitable for the illumination field, and therefore is different from lenses in other fields (such as the image capturing field).

It should be noted that the combined lens 100 and the light emitting unit 200 may also be named as a light emitting module in the present embodiment. The combined lens 100 is matched with the light emitting unit 200 and the carrying seat 300 in the embodiment; alternatively, the light emitting module is disposed on the supporting base 300, but the invention is not limited thereto. In other embodiments not shown in the present disclosure, the combined lens 100 or the light emitting module can be used alone (for example, sold) or be combined with other components.

The combined lens 100 defines a central axis C in the present embodiment, and the combined lens 100 is symmetrical to the central axis C. The combined lens 100 includes a first lens portion 1 and a second lens portion 2, which are fixed relative to each other, and the first lens portion 1 and the second lens portion 2 are disposed at an interval. That is, the first lens portion 1 and the second lens portion 2 of the present embodiment exclude any two lens portions that are not provided at an interval.

In the present embodiment, the first lens portion 1 and the second lens portion 2 are disposed on the carrying seat 300 to maintain the relative positions therebetween, but the present invention is not limited thereto. For example, in other embodiments not shown in the present disclosure, the first lens portion 1 and the second lens portion 2 may be positioned by bonding, ultrasonic welding, external component fixing (e.g., screw locking), or other connection methods.

The first lens portion 1 is of an integrally formed one-piece structure, and the first lens portion 1 includes (a surface of) a ring-shaped side surface 11, an incident surface 12 located inside the ring-shaped side surface 11, a plurality of side incident surfaces 13 and a plurality of reflecting surfaces 14 located between the ring-shaped side surface 11 and the incident surface 12, and an exit surface 15 located on the opposite side of the incident surface 12. The central axis C passes through the incident surface 12 and the exit surface 15, and the annular side surface 11, the plurality of side incident surfaces 13, and the plurality of reflecting surfaces 14 are surrounded on the outside of the central axis C; the incident surface 12, the side incident surfaces 13, and the reflecting surfaces 14 are all located in the space surrounded by the ring side surface 11, but the invention is not limited thereto.

Further, the ring side surface 11 is substantially circular in shape and the center thereof is located on the central axis C, and the ring side surface 11 can be used for reflecting the light traveling in the first lens portion 1, so that the light travels toward the exit surface 15. Note that the ring side 11 of the present embodiment does not have any light diffusion treatment; that is, the combined lens 100 is not formed with any light diffusing microstructures on the ring side 11. Accordingly, any lens having a light-diffusing microstructure formed on the side surface of the ring is not the first lens portion 1 of the present embodiment.

The incident surface 12 in this embodiment includes a normal incident region 121 penetrated by the central axis C and a lateral incident region 122 connected to the normal incident region 121; the edge of the normal incidence region 121 is substantially circular and the center thereof is located at the central axis C, and the lateral incidence region 122 is substantially vertically connected to the edge of the normal incidence region 121, so that the incidence surface 12 surrounds and forms a groove-shaped space 123.

The plurality of side incident surfaces 13 and the plurality of reflection surfaces 14 are alternately arranged between the side incident region 122 and the ring side surface 11, one reflection surface 14 is provided between the side incident surface 12 and the adjacent side incident surface 13, and one reflection surface 14 is provided between any two adjacent side incident surfaces 13. Each side incident surface 13 functions similarly to the side incident region 122, each reflective surface 14 functions similarly to the ring side surface 11, and any one of the reflective surfaces 14 of the present embodiment has no light diffusion treatment (that is, the reflective surface 14 is not formed with any light diffusion microstructure). Accordingly, any lens having a light-diffusing microstructure formed on a reflecting surface is not the first lens portion 1 of the present embodiment.

The exit surface 15 is planar in the present embodiment, and the center thereof is located at the central axis C, and the exit surface 15 is perpendicular to the central axis C. The light-emitting surface 15 of the present embodiment has no light-diffusing treatment (that is, the light-emitting surface 15 has no light-diffusing microstructure), and thus any lens having a light-diffusing microstructure formed on the light-emitting surface is not the first lens portion 1 of the present embodiment.

Accordingly, the first lens portion 1 is formed with the incident surface 12 and the plurality of side incident surfaces 13, so that light can enter the first lens portion 1 through different paths, and the light can further pass through the incident surface 12 and the plurality of side incident surfaces 13 and travel along different refraction paths, and the different refraction paths can further affect each other or derive different refraction paths, so that the light can be dispersed to the exit surface 15, and further the uniformity of light exiting from the exit surface 15 of the first lens portion 1 is improved.

The second lens portion 2 is a one-piece structure formed integrally, and in this embodiment, the second lens portion 2 includes a transparent plate 21 and a side ring 22 formed on the periphery of the transparent plate 21. In the present embodiment, the transparent plate 21 is a transparent flat plate structure, and the edge ring 22 is substantially vertically connected to the transparent plate 21.

Furthermore, partial surfaces of the first lens portion 1 (such as the exit surface 15, partial ring side surfaces 11 adjacent to the exit surface 15, partial entrance surfaces 12, at least partial side entrance surfaces 13, and at least partial reflection surfaces 14) are located in the space surrounded by the edge ring 22, and the edge ring 22 of the second lens portion 2 is fastened to the carrier 300.

In another perspective, the second lens portion 2 includes a light diffusion surface 23 and a light exit surface 24 respectively disposed on two opposite sides, and the light diffusion surface 23 is disposed on the inner surface of the transparent plate 21 in the present embodiment, and the light exit surface 24 is disposed on the outer surface of the transparent plate 21. The light diffusion surface 23 of the second lens portion 2 is opposite to and spaced apart from the emitting surface 15 of the first lens portion 1, and a distance D between the light diffusion surface 23 and the emitting surface 15 is preferably not greater than a distance between the light diffusion surface 23 and the emitting surface 24 (i.e., the thickness T of the light-transmitting plate 21), but the invention is not limited thereto.

The light diffusion surface 23 is an inner surface of the second lens portion 2 subjected to a light diffusion process, and the light diffusion process may be performed by, for example, coating a paint, providing a dense structure having a predetermined curvature, performing a frosting process, or forming a plurality of periodic prisms, which is not limited in the present invention. From a structural point of view, the light diffusion surface 23 (which may be formed by the light diffusion processing manner described above) is formed with a plurality of light diffusion microstructures 231, and the plurality of light diffusion microstructures 231 are located on a projection area of the light diffusion surface 23, which is orthographically projected on the exit surface 15. It should be noted that the specific structure of the light diffusing microstructure 231 can be adjusted and varied according to design requirements, and is not limited to the drawings of the present embodiment.

Furthermore, the light emitting surface 24 is planar in the embodiment and the center thereof is located at the central axis C, but in other embodiments not shown in the present invention, the light emitting surface 24 may also be concave or convex according to design requirements. It should be noted that the light-emitting surface 24 of the present embodiment does not have any light diffusion process; that is, the combined lens 100 does not have any light diffusion microstructure formed on the light-emitting surface 24. Accordingly, any lens having a light diffusion microstructure formed on the light exit surface is not the second lens portion 2 in the present embodiment.

In addition, the lens assembly 100 of the present embodiment has a gas medium layer 3 disposed between the light diffusion surface 23 and the light exit surface 15, so that the first lens portion 1 and the second lens portion 2 are disposed at an interval. The light diffusion microstructures 231 (or the light diffusion surfaces 23) are exposed from the gas-phase medium layer 3, and the gas-phase medium layer 3 is an air layer in the embodiment, but the invention is not limited thereto.

Accordingly, by forming the plurality of light diffusion microstructures 231 on the inner side (and in the projection area) of the combined lens 100, the light beam that passes through the exit surface 15 of the first lens portion 1 can be homogenized by the plurality of light diffusion microstructures 231 and is softer, and the plurality of light diffusion microstructures 231 are less susceptible to the influence of factors other than the combined lens 100, thereby effectively ensuring the optical effect of the combined lens 100.

Furthermore, the combined lens 100 can further match with some of the above structural conditions (e.g., the distance D between the light diffusion surface 23 and the exit surface 15 is not greater than the thickness T of the transparent plate 21, the plurality of light diffusion microstructures 231 are exposed on the vapor phase medium layer 3, and no light diffusion microstructures are formed on the ring side surface 11 and the light exit surface 24), so that the combined lens 100 can have a better optical effect.

The light emitting unit 200 is illustrated by at least one led chip in the embodiment, but the invention is not limited thereto. The light emitting unit 200 is fixedly and electrically coupled to the carrier 300, and the lens assembly 100 is mounted on the carrier 300 and located at one side of the light emitting unit 200 (e.g., the upper side of the light emitting unit 200 in fig. 2). Further, the light emitting unit 200 is located on the central axis C but outside the groove-shaped space 123 (i.e., the light emitting unit 200 is located right below the normal incidence region 121), and the light emitting unit 200 is configured to emit a light toward the incidence surface 12 (and the side incidence surfaces 13) of the first lens portion 1.

Furthermore, the supporting base 300 is detachably mounted to an external power source (e.g., a lamp socket) in the present embodiment, so as to obtain the power required by the operation of the lamp 1000. Further, when the carrier 300 obtains power from the external power source and drives the light emitting unit 200 to emit the light toward the incident surface 12 (and the plurality of side incident surfaces 13), the light passing through the incident surface 12 (and the plurality of side incident surfaces 13) and entering the combined lens 100 can pass through the exit surface 15 and the plurality of light diffusing microstructures 231 and exit the combined lens 100 from the exit surface 24.

[ example two ]

Please refer to fig. 5, which is a second embodiment of the present invention, and this embodiment is similar to the first embodiment, so the same points of the two embodiments will not be described again, and the differences of this embodiment compared with the first embodiment mainly lie in: the combined lens 100.

In the present embodiment, the combined lens 100 further includes a transparent adhesive layer 4 filled between the light diffusion surface 23 and the exit surface 15 (i.e., the vapor phase medium layer 3 is replaced by the transparent adhesive layer 4), and the light diffusion microstructures 231 are embedded in the transparent adhesive layer 4.

In the present embodiment, the emitting surface 15 and the light diffusing surface 23 are completely covered and adhered by the transparent adhesive layer 4, so that the relative position between the first lens portion 1 and the second lens portion 2 can be fixed by the transparent adhesive layer 4. It should be noted that the transparent adhesive layer 4 is transparent in the embodiment, and the material and the refractive index of the transparent adhesive layer 4 can be adjusted and changed according to the design requirement, which is not limited herein.

[ third example ]

Please refer to fig. 6, which is a third embodiment of the present invention, and this embodiment is similar to the first embodiment, so the same points of the two embodiments will not be described again, and the differences of this embodiment compared with the first embodiment mainly lie in: the light emitting module.

In the present embodiment, the surface of the first lens portion 1 includes only one annular side surface 11, an incident surface 12 located inside the annular side surface 11, and an exit surface 15 located on the opposite side of the incident surface 12 and connected to the annular side surface 11 (that is, the first lens portion 1 does not have the side incident surface 13 and the reflection surface 14). Wherein, the incident surface 12 also surrounds and forms a groove-shaped space 123, the light emitting unit 200 falls on the central axis C, and at least part of the light emitting unit 200 is located in the groove-shaped space 123.

[ example four ]

Please refer to fig. 7, which is a fourth embodiment of the present invention, and this embodiment is similar to the first embodiment, so the same points of the two embodiments will not be described again, and the differences of this embodiment compared with the first embodiment mainly lie in: the combined lens 100.

In this embodiment, the second lens portion 2 may have a flat plate shape (that is, the second lens portion 2 is not formed with the edge ring 22), and the first lens portion 1 and the second lens portion 2 may be held in relative positions by a member other than the combined lens 100. In the present embodiment, the first lens portion 1 and the second lens portion 2 are held in relative positions by the carrying seat 300, but the invention is not limited thereto.

[ technical effects of embodiments of the present invention ]

In summary, in the lamp, the light emitting module and the combined lens thereof disclosed in the embodiments of the invention, the light diffusing microstructures are formed inside the combined lens (and located in the projection area), so that the light beam passing through the exit surface of the first lens portion can be homogenized and softened by the light diffusing microstructures, and the light diffusing microstructures are less susceptible to the influence of factors other than the combined lens, thereby effectively ensuring the optical effect of the combined lens.

Furthermore, the combined lens can be further matched with part of the structural conditions (for example, the distance between the light diffusion surface and the emergent surface is not more than the thickness of the light transmission plate, the plurality of light diffusion microstructures are exposed out of the gas-phase medium layer or are embedded in the light transmission glue layer, and no light diffusion microstructures are formed on the side surface and the emergent surface of the ring) so that the combined lens has a better optical effect.

Furthermore, the first lens portion may be formed with the incident surface and the plurality of side incident surfaces, so that light can enter the first lens portion through different paths, and the light can further pass through the incident surface and the plurality of side incident surfaces and travel along different refraction paths, and the different refraction paths can further affect each other or derive different refraction paths, so that the light can be dispersed to the exit surface, and further the uniformity of light output of the exit surface of the first lens portion is improved.

The disclosure is only a preferred embodiment of the invention and is not intended to limit the scope of the invention, so that all equivalent technical changes made by using the contents of the specification and drawings are included in the scope of the invention.