阅读说明：本技术 光学扫描系统 (Optical scanning system ) 是由 S·博加特舍尔 J·哈塞尔巴赫 J·斯帕贝尔特 R·哈斯 于 2018-03-28 设计创作，主要内容包括：本发明涉及一种光学扫描系统(1),包括转子(2),所述转子设置用于在扫描过程时绕着旋转轴线(6)旋转；光学透镜(3),所述光学透镜这样地布置在所述转子(2)上,使得所述透镜(3)处在所述旋转轴线(6)上；光学发送单元(10),所述光学发送单元布置在所述转子(2)上并且设置用于沿着所述透镜(3)的光学轴线(8)的方向发送扫描射束(4)；光学接收单元(20),所述光学接收单元布置在转子(2)上并且包括探测器(21),所述探测器设置用于接收反射的扫描射束(5),其中,所述探测器(21)这样地布置,使得所述反射的扫描射束(5)借助所述透镜(3)聚焦到所述探测器(21)上。(The present invention relates to a kind of optical scanning system (1), including rotor (2), the rotor setting in scanning process around rotation axis (6) for rotating；Optical lens (3), the optical lens are arranged in this wise on the rotor (2), so that the lens (3) are on the rotation axis (6)；Optics transmission unit (10), the optics transmission unit, which is arranged on the rotor (2) and is arranged, sends scanning beam (4) for the direction of the optical axial (8) along the lens (3)；Optical receiver unit (20), the optical receiver unit is arranged on rotor (2) and including detector (21), the detector setting is for receiving the scanning beam (5) of reflection, wherein, the detector (21) is arranged in this wise, so that the scanning beam (5) of the reflection focuses on the detector (21) by the lens (3).)

1. a kind of optical scanning system (1) comprising:

Rotor (2), the rotor setting in scanning process around rotation axis (6) for rotating；

Optical lens (3), the optical lens are arranged in this wise on the rotor (2), so that the lens (3) are in institute It states on rotation axis (6)；

Optics transmission unit (10), the optics transmission unit are arranged on the rotor (2) and are arranged for along described The direction of the optical axial (8) of lens (3) sends scanning beam (4)；

Optical receiver unit (20), the optical receiver unit are arranged on the rotor (2) and including detector (21), The detector setting is for receiving the scanning beam (5) of reflection, wherein the detector (21) is arranged in this wise, so that will The scanning beam (5) of the reflection focuses on the detector (21) by the lens (3).

2. optical scanning system (1) according to claim 1, which is characterized in that the center of gravity (7) of the lens (3) is in On the rotation axis (6).

3. optical scanning system (1) according to any one of the preceding claims, which is characterized in that pass through the lens (3) periphery when rotating around the rotation axis (6) limits enveloping surface (9), and the optics transmission unit (10) Be arranged on the rotor (2) in this wise with the optical receiver unit (20) so that the optics transmission unit (10) and/ Or the region of the optical receiver unit (20) is arranged on the enveloping surface (9) or in the enveloping surface (9).

4. optical scanning system (1) according to any one of the preceding claims, which is characterized in that the lens (3) Optical axial (8) is perpendicular to the rotation axis (6).

5. optical scanning system (1) according to any one of the preceding claims, which is characterized in that the optics receives single First (20) include the first mirror (22), wherein first mirror (22) is arranged in this wise, so that the scanning beam of the reflection is being worn It is deflected on the detector (21) after crossing the lens (3) by first mirror (22).

6. optical scanning system (1) according to claim 5, which is characterized in that first mirror (22), which has, is gathered The surface on burnt surface, especially arching.

7. optical scanning system (1) according to any one of the preceding claims, which is characterized in that the optics sends single First (10) include optical launcher (11) and the second mirror (13), wherein second mirror (13) is arranged in this wise, so that by described The scanning beam (4) that optical launcher (11) is sent is by second mirror (13) along the optical axial (8) of the lens (3) Direction is deflected.

8. optical scanning system (1) according to any one of the preceding claims, which is characterized in that the optics sends single First (10) include collimation lens (12).

9. according to the described in any item optical scanning systems of preceding claims (1), which is characterized in that the optical receiver unit (20) and/or the optics transmission unit (10) includes optical filter (23).

10. according to the described in any item optical scanning systems of preceding claims (1), which is characterized in that the optical scanner system System (1) is coaxial macro scan instrument.

Technical field

The present invention relates to a kind of optical scanning systems.Current scanning system, especially biaxial rotated 3D laser scanner (so-called macro scan instrument) has certain structure size, and wherein the optical axial of transmitting and receiving unit is under certain distance It extends parallel to each other.This is not only applicable to the macro scan instrument of mirror or the rotation of mirror system, and is suitable for sending and receiving list Member is positioned in parallel within the macro scan instrument on rotor.

Background technique

However, there is low structure height in order to be integrated in determining ambient enviroment (such as in vehicle projectors) It is advantageous with the especially flat planform of small root diameter.Scheme for reducing macro scan instrument structure size is Course of the beam will be sent and received partly to guide through identical lens.Because of the therefore optical axial of transmitting and receiving unit Outside sensor be it is identical, so such scanner be referred to as it is coaxial.

A kind of coaxial macro scan instrument as known to US8836922B1, wherein receiving lens are also used as sending The collimation lens in path.The shortcomings that disclosed scheme, is there, and transmitting path can not be straight to maximum lens by broadening Diameter and at the same time collimated, however, this for guaranteeing ocular safety at the same time in the case where improve and send power and therefore Increase sphere of action to be advantageous.In addition, the diameter for receiving utensil is less than root diameter herein.

For this purpose, DE102012102244B4 and DE102013215627A1 disclose other optical scanning system.

Summary of the invention

Optical scanning system according to the present invention includes rotor, optical lens, optics transmission unit and optical receiver unit, The rotor setting in scanning process around rotation axis for rotating；The optical lens is arranged on rotor in this wise, So that the lens are on rotation axis；The optics transmission unit is arranged on rotor and is arranged for the light along lens It learns axis direction and sends scanning beam；The optical receiver unit is arranged on rotor and is reflected including setting for receiving Scanning beam detector, wherein the detector is arranged in this wise, so that the scanning beam reflected is gathered by lens On coke to detector.

Not only optics transmission unit but also optical receiver unit is all disposed on rotor.This means that: it is sent in optics single There is mechanical connection between member and rotor and between optical receiver unit and rotor, to make optics send out in rotor rotation Unit and optical receiver unit is sent also to be moved around rotation axis.Because optical lens is equally arranged on rotor, The optical lens rotates together with rotor around rotation axis.Rotor is preferably disk.Optical lens, optics transmission unit and light Receiving unit is learned to be preferably placed on the common side of rotor.

Influence the susceptibility of optical scanning system significantly by the aperture of lens.Therefore, lens are implemented as far as possible It is advantageous greatly.In the case where the arrangement according to the invention of optical lens, which rotates together with rotor.Cause This, the lens of the king-sized structural detail as optical scanning system need the minimum space for rotation.It therefore can be real The particularly compact structure of existing optical scanning system.Therefore, optical scanning system can be especially special in its height and diametrically Do not implement compactly.In addition, can be realized by optical scanning system according to the present invention directly related with the diameter of rotor Maximum receiving aperture.Therefore, it can be realized in the optical scanning system of small size with king-sized sphere of action Optical scanning system.Because rotor and the unit being in thereon are rotated around rotation axis, can be in the plane of scanning motion It is interior --- for example horizontally --- to realize 360 ° of measurement.

Therefore, realize a kind of following optical scanning system: its receiving aperture corresponds to root diameter, and its transmission is penetrated Beam improves in the case where being widened for guaranteeing ocular safety at the same time and sends power.In addition, optics according to the present invention is swept The system of retouching has the advantages that be easy to calibrate.Therefore king-sized optical element can be used, it is possible thereby to which more easily control is public Difference only has relatively small influence to the quality of optical scanning system.Because scanning system is coaxial scanning system, institute It is less important with the tolerance relative to rotor.In addition, optical system also can be at because least optical element is used only This is advantageously manufactured.Especially when lens installation pedestal in the center there is access portal or on the surface, this can be used for The compression or calibration of low tolerance, including with send and receive in being bonded in of element.

Dependent claims show preferred expansion scheme of the invention.

Preferably, optical lens is arranged in this wise, so that the center of gravity of lens is on rotation axis.Therefore, lens are in this way Ground arrangement, so that the lens are rotated when rotor is rotated around its center of gravity.Here, center of gravity is the mass center of lens or the geometry of lens Center of gravity.It is particularly preferred that center of gravity not still the mass center of lens and also be lens geometric center of gravity.

Preferably, the periphery by lens when rotating around rotation axis limits enveloping surface, and optics send it is single Member and optical receiver unit are arranged on rotor in this wise, so that optics transmission unit and/or optical receiver unit region It is arranged on enveloping surface or in enveloping surface.In other words, following situation is advantageous: optics transmission unit and optics receive list Member is arranged on rotor in this wise, so that the point farthest from rotation axis of optical lens is sent than optical receiver unit and optics The point of unit is further from rotation axis.Enveloping surface is the surface of rotary body, and the rotary body is when lens are rotated around rotation axis Forming.Then this is particularly suitable for the case where considering the single plane perpendicular to rotation axis.Briefly, it means that send Unit and optical receiver unit are arranged in the space required for optical lens rotation around optical lens.However, because Receiving unit and transmission unit rotate together with lens, so will not collide.Therefore particularly compact optics may be implemented Scanning system.

The optical axial of lens is also advantageous perpendicular to rotation axis.It is for example realized in horizontal plane in this way The king-sized visual field of optical scanning system.

In addition, following situation is advantageous: optical receiver unit includes the first mirror, wherein the first mirror is arranged in this wise, is made The scanning beam that must be reflected is deflected on detector after passing through lens by the first mirror.Therefore, between lens and detector Space can be obtained by receiving course of the beam, because the reception course of the beam is folded by the first reflecting mirror.It is single according to receiving The arrangement of the optical structural element of member is advantageously, optical receiver unit includes other lens and mirror.

It is also advantageous that the first mirror has the surface on the surface, especially arching that are focused.Therefore, the first mirror is curved Bent.The aberration of lens can be partially compensated in this way.

It is also advantageous that optics transmission unit includes optical launcher and the second mirror, wherein the second mirror cloth in this wise It sets, so that being deflected by the second mirror along the optical axial direction of lens by the scanning beam that optical launcher is sent.Optics hair Emitter is preferably laser, especially laser diode.It can be realized only the second mirror by this arrangement of the second mirror rather than whole Before a optical launcher is arranged in lens.Therefore the maximum effective area of lens is realized.This leads to the Gao Min of optical scanning system Sensitivity.

It is also advantageous that optics transmission unit includes collimation lens.In this way with saving position by collimation lens It is integrated into optical scanning system.Therefore, optical scanning system can carry out determining scanning distance in a simple manner Optimization.Here, the following lens of collimation lens especially lens devices: by the lens to single scanning beam or multiple scannings Beam is collimated.

Also advantageously, optical receiver unit and/or optics transmission unit include optical filter.It can be with by this optical filter The susceptibility of optical scanning system is realized in the case where small structure type remains unchanged.

It is particularly advantageous that optical scanning system is coaxial macro scan instrument.

Detailed description of the invention

Describe the embodiment of the present invention in detail with reference to the accompanying drawings.Attached drawing is shown:

Fig. 1 shows the diagram of optical scanning system according to the present invention according to the first embodiment of the present invention；

Fig. 2 shows the diagrams of scanning system according to the present invention according to the second embodiment of the present invention；

Fig. 3 shows the diagram of scanning system according to the present invention according to the second embodiment of the present invention；

Fig. 4 shows the diagram of scanning system according to the present invention according to the third embodiment of the present invention；

Fig. 5 shows the diagram of advantageous transmission unit.

Specific embodiment

Fig. 1 shows the optical scanning system according to the present invention 1 of first embodiment according to the present invention.Here, optics is swept System 1 is retouched to show with the sectional view along the first section.Here, the rotation axis of optical scanning system is first perpendicular to shown in Section.

Optical scanning system 1 is coaxial macro scan instrument.It means that being penetrated by the scanning that optical scanning system 1 is sent Beam 4 has the parallel axes identical with the scanning beam 5 of reflection received by optical scanning system 1 in the first embodiment Line.Optical scanning system 1 includes rotor 2, optical lens 3, optics transmission unit 10 and optical receiver unit 20.

The setting of rotor 2 in scanning process around rotation axis 6 for rotating.In the first embodiment of the invention In, rotor 2 is disk, rotation axis 6 perpendicular to rotor 2 circular surface and herein in the circular surface of rotor 2 Point.It is noted that rotor 2 can have other shapes in alternative embodiments.Therefore, rotor 2 for example can be by as follows Each element constitute: each element constitutes the other elements for being used for optical scanning system 1 --- especially optical lens 3, Optics transmission unit 10 and/or optical receiver unit 20 --- holding meanss.Preferably, rotor 2 has groove, the groove energy The balance for enough realizing rotor 2 and the component being disposed thereon, to avoid imbalance when rotated.Optical scanning system 1 is wrapped Motor is included, drives rotor 2 by the motor to rotate around rotation axis 6.

Optical lens 3 is arranged in this wise on rotor 2, so that the center of gravity 7 of optical lens 3 is on rotation axis 6.Because Therefore one point of optical lens 3 is on rotation axis 6, so optical lens 3 is arranged on rotation axis.In first reality It applies in mode, optical lens 3 is, for example, biconvex lens.Here, the geometric center of gravity and mass center of optical lens 3 fall in common center of gravity On 7.Optical lens 3 has the lens diameter of the diameter corresponding to rotor 2.Optical lens 3 is centrally disposed on rotor 2.In This, the optical axial 8 of lens 3 orients in this wise, so that the optical axial is perpendicular to rotation axis 6.In Fig. 1, rotation axis 6 It is shown as a point, because point plane shown in Fig. 1 is prominent.Therefore, the optical axial 8 of lens 3 is in revolves with rotor 2 In the parallel plane of the plane turned.

Optics transmission unit 10 is arranged on rotor 2 and is arranged and sends for the direction of the optical axial 8 along lens 3 Scanning beam 4.In the first embodiment of the invention, optics transmission unit 10 includes that (it is laser to optical launcher 11 Diode) and collimation lens 12.Transmitter 11 is arranged in above rotor 2 on the first side of optical lens 3.Here, optics is sent out Emitter 11 is arranged on the optical axial 8 of optical lens 3.Here, optical launcher 11 orients in this wise, so that its transmission is as follows Laser beam: the laser beam along lens 3 optical axial 8 far from 3 ground of lens propagate.The laser emitted by optical launcher 11 Beam is scanning beam 4.Before scanning beam 4 is emitted in the ambient enviroment of optical scanning system 1, which is irradiated to On collimation lens 12 before being arranged in optical launcher 11.Alternatively, it is disposed with instead of collimation lens 12 saturating including multiple collimations The lens devices of mirror.Or it can be with by the lens curvature of collimation lens 12 by collimation lens 12 to the spacing of optical launcher 11 Limit the broadening of scanning beam 4.Because optical launcher 11 and collimation lens 12 are successively arranged the optical axial 8 in lens 3 On, so only the Minimum Area of lens 3 is blocked by optics transmission unit 10.

In addition, optical scanning system 1 includes optical receiver unit 20, the optical receiver unit is arranged on rotor 2 simultaneously And including detector 21, the detector setting is for receiving the scanning beam 5 reflected, wherein detector 21 arranges in this wise, So that the scanning beam 5 of reflection is focused on detector 21 by optical lens 3.Here, optical receiver unit 20 includes the One mirror 22.First mirror 22 is arranged in this wise, so that the scanning beam 5 of reflection is deflected after passing through lens 3 by the first mirror 22 Onto detector 21.It, can between lens 3 and the first mirror 22 here, in order to optimize the course of the beam in receiving unit 20 Selection of land is disposed with other optical element.Other optics can also be optionally disposed between the first mirror 22 and detector 21 Element, especially other lens and/or mirror.

In addition, optical receiver unit 20 includes optical filter 23.The optical filter 23 is arranged on the first side of lens 3, wherein Optical filter 23 is arranged between transmission unit 10 and optical lens 3.Optical filter 23 prolongs above the whole surface of optical lens 3 It stretches.Here, selecting optical filter 23 in this wise, so that the optical filter only allows through the light with following wavelength: the wavelength is in In the wave-length coverage of the wavelength of scanning beam 4.

First reflecting mirror 22 is arranged in second side of optical lens 3, which is the first side phase with optical lens 3 Opposed side.First mirror 22 is concave mirror.First mirror 22 is especially with each plane of respectively different orientation.Pass through the first mirror The light of the scanning beam 5 of reflection being irradiated on first mirror is deflected and is focused on along the direction of detector 21 by 22 On the detector.Detector 21 is so-called sensor array.This means that: detector 21 has is disposed with multiple light on it The surface of electric transducer.Detector 21 is arranged in second side of optical lens 3.Here, the significant surface of detector 21 is in this wise Orientation, so that the significant surface is directed away from optical lens 3.Here, detector 21 is arranged in the center on the surface of optical lens 3, I.e. before the center of gravity of the optical lens 7.

If scanning beam 4 is sent by optics transmission unit 10 and therefore sent by optical scanning system 1, which is penetrated Beam is reflected on the object in the ambient enviroment of optical scanning system 1.If it is the case, then the scanning beam is as anti- The scanning beam 5 penetrated is reflected back toward.Therefore, the scanning beam 5 of reflection is less focused than scanning beam 4.The scanning of reflection is penetrated Beam 5 is reflected back from the direction for first sending scanning beam 4 not long ago.The minimum that rotor 2 is rotated by it is had ignored in the hypothesis Movement.Therefore, the scanning beam 5 of reflection is irradiated on optical lens 3 and is tapered by the optical lens.This gradually becomes The scanning beam 5 of thin reflection is irradiated on the first mirror 22 and is reflected by first mirror.Here, making the scanning beam 5 of reflection Further attenuate and focuses on detector 21.Therefore, the scanning beam 5 of reflection is inclined by the first mirror 22 after passing through lens 3 It goes on detector 21.In such a way that the first mirror 22 is embodied as concave mirror, which has the focusing as arching surface Surface.Here, arching surface is the following reflecting surface of the first mirror 22: the reflecting surface is arranged in this wise, so that it is in First mirror 22 on the side of 3 side of optical lens.

Particularly compact optical scanning system 1 is shown in first embodiment shown in Fig. 1.Light shown in Fig. 1 In the case where learning scanning system 1, optical receiver unit 20 and optics transmission unit 10 are arranged particularly near 3 ground of optical lens.In This, the configuration in this wise of optical scanning system 1, so that optics transmission unit 10 and optical receiver unit 20 are arranged in rotor in this wise On, so that the region of optics transmission unit 10 and optical receiver unit 20 is arranged in enveloping surface 9.Here, enveloping surface 9 by The periphery of lens 3 limits when optical lens 3 is rotated around rotation axis 6.If revolving optical lens 3 shown in Fig. 1 Turn, then the optical lens is perceived as ball in quick rotation, because the optical lens 3 has circular periphery.Therefore, optics The rotated shape of lens 3 is ball.Correspondingly, ball surface is the enveloping surface 9 of the optical lens 3 rotated.Therefore, enveloping surface 9 It is the circle by the outermost point 41,42 on the periphery of optical lens 3 in the section shown in.In the first section shown in, Optics transmission unit 10 and optical receiver unit 20 are fully disposed in the circle and are therefore fully disposed in enveloping surface 9.

In the first embodiment, not only transmission unit 10 but also detector 21 are in the optical axial 8 of optical lens 3 In and be therefore in the optical axial of optical sensor system 1.Optical axial 8 is the axis across the center of optical lens 3 Line.Optionally, optical filter 23, especially bandpass optical filter or other optical filters can also be placed in optical lens 3 and transmission unit Between 10.

Fig. 2 shows the diagrams of optical scanning system 1 according to the second embodiment of the present invention.Of the invention second is implemented Mode substantially corresponds to first embodiment of the invention.Here, also the first section shown in FIG. 1 is shown in FIG. 2.

The difference of second embodiment of the present invention and first embodiment of the invention is that detector 21 and optics are sent out Emitter 11 is arranged on the surface of rotor 2.Here, transmitter 11 is arranged in this wise, swept so that being parallel to the transmitting of 6 ground of rotation axis Retouch beam 5.On the first side of optical lens 3, the second mirror 13 is arranged in the region at the center on the surface of optical lens 3.It should Second mirror is preferably fixed on optical lens 3.Here, the second mirror 13 is at 45 ° relative to the scanning beam 4 sent by transmitter 11 Angle.Therefore, scanning beam 4 deflects 90 ° and extends then along the optical axial of optical lens 38.

Detector 21 is arranged on the surface of rotor 2 in second side of optical lens 3, wherein detector 21 it is effective Surface is oriented far from 2 ground of rotor.In order to realize the arrangement of detector 21, position and the song of the first mirror 22 are correspondingly selected The arching degree of rate and the first mirror 22.

In this second embodiment, optical launcher 11 and detector 21 are therefore in the optical axial 8 by optical lens 3 The side of restriction is upwardly arranged at outside the lens surface of optical lens 8.Thus avoid occurring lens by optical launcher 11 and detection Device 21 blocks.

In this second embodiment, small deflecting mirror is used at the center of optical lens 3 together with the second mirror 13, this is partially Tilting mirror is optionally also possible to curved.The deflecting mirror carries out scanning beam 4 along the direction of the optical axial 8 of optical lens 3 It deflects and generates desired vertical divergence.In this second embodiment, the optionally bending in course of the beam is being received The first mirror 22 be inclined, therefore can by receive beam focus on detector 21.It can when needing to be improved image quality To increase the lens numbers in RX path in the following way: before another lens are for example arranged in detector 21.

Fig. 3 shows optical scanning system 1 according to the second embodiment of the present invention.Here, optical scanning system 1 is with edge The sectional view in the second section where rotation axis 6 show.

Here, as can be seen from Figure 3 the second mirror 13 is fixed on optical filter 23.Therefore, cancel for the second mirror 13 Additional holding element.In addition, being disposed with collimation lens in scanning beam 4 between optical launcher 11 and the second mirror 13 12.Therefore, it can be realized scanning beam 4 in this embodiment and be matched with determining scanning area.If by optical launcher 11 transmitting scanning beams 4, then the scanning beam passes through collimation lens 12 and is irradiated on the second mirror 13.By making the second mirror 13 It is correspondingly tilted relative to the scanning beam 4 emitted, which orients along the optical axial 8 of lens 3.Therefore, Two mirrors 13 are arranged in this wise, so that optical axial of the scanning beam 4 sent by optical launcher 11 by the second mirror 13 along lens 3 8 direction is deflected.As can be seen that optical lens 3 is arranged in holding meanss 30.

Fig. 4 is the diagram of optical scanning system 1 according to the third embodiment of the present invention.Third embodiment party of the invention Formula substantially corresponds to second embodiment of the present invention.Here, the second section being also shown in FIG. 3 is shown in FIG. 4.

The scanning system 1 according to the third embodiment of the present invention shown in Fig. 4 is included in optics shown in Fig. 5 Transmission unit 10.Here, optics transmission unit 10 is multiple beam splitter (Mehrfachstrahlteiler).In the multiple beam splitting In device, the first prism 31, the second prism 32 and third prism 33 are disposed between collimation lens 12 and the second mirror 13.This Number of prisms is illustratively selected in three embodiments, and can choose in other embodiments of substitution more or more Few number of prisms.However, in all embodiments advantageously, all or some in prism 31,32,33 be bonded into it is whole Body component.

Scanning beam 4 is irradiated on the first prism 31 after passing through collimation lens 12 and is decomposed by first prism.It sweeps The component for retouching beam is irradiated on the second mirror 13 as the first scanning beam 4a.First scanning beam 4a by the second mirror 13 with light Learn the parallel enterprising horizontal deflection in direction of the optical axial of lens 3.Another component of scanning beam deflects into from the first prism 31 On two prisms 32.

Scanning beam 4 is deflected into the decomposition of the component on the second prism 33 from the first prism 31 by the second prism 32. Here, the component of scanning beam 4 is deflected by the second mirror 13 as the second scanning beam 4b and is deflected by second mirror 8 ground of optical axial for being parallel to optical lens 3 extends.Another component of scanning beam 4 is deflected by third from the second prism 32 It is deflected by the second mirror 13 on prism 33 and from the third prism as third scanning beam 4c.Third scanning beam 4c quilt Second mirror 13 deflects in this wise, so that the third scanning beam extends with being equally parallel to the optical axial of optical lens 3.

It is noted that the first and second prisms 31,32 equally can be semitransparent mirror, and third prism 33 can be mirror.

If edge emitter is used as laser, collimation lens 12 can by the fast the alignment of axe of laser diode and Slow axis is focused on the second mirror 13 simultaneously.If using whole multiple beam splitter prism for beam multiplication, it can be with Implement to send course of the beam like that as shown in FIG. 5.

In short, subject of the present invention is receiving lens (i.e. optical lens 3) to be placed in the center of rotor 2, therefore lens are straight Diameter corresponds to root diameter, this corresponds to the receiving aperture of the maximum possible in principle of the scanner rotated in principle.For So that the reception course of the beam between optical lens 3 and detector 21 is obtained space in rotor 2, which is borrowed The first mirror 22 is helped to be folded.First mirror 22 optionally can be curved, therefore can partially compensate for optical lens 3 Aberration.The transmission unit 10 being made of laser 11, collimation lens 12, optional multiple beam splitter and optional primary deflector mirror is excellent Selection of land is on the other side of optical lens 3.

Beam spread is realized by the beam of diverging along rotation axis 6 (such as vertical axis).In orthogonal (such as water It is flat) that beam 4 is sent in axis is collimated and optionally for example doubled by multiple beam splitter shown in fig. 5 to mention High ocular safety.Thus the parallel line beam of multiple spacing with the maximum pupil (such as 8mm) greater than human eye is obtained. In receiving side, different, uniform irradiation (vertically) sending direction is imaged on one-dimensional detector by receiving lens.Second The image resolution ratio of (level) axis is realized by the rotation of probe (i.e. rotor 3).

Other than above disclosure, it is also expressly that ground is refering to fig. 1 to the disclosure of Fig. 5.