CN209117858U - The amplifying device and laser radar system of laser radar scanning angle - Google Patents
The amplifying device and laser radar system of laser radar scanning angle Download PDFInfo
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- CN209117858U CN209117858U CN201821554401.1U CN201821554401U CN209117858U CN 209117858 U CN209117858 U CN 209117858U CN 201821554401 U CN201821554401 U CN 201821554401U CN 209117858 U CN209117858 U CN 209117858U
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Abstract
The utility model discloses the amplifying device and laser radar system of a kind of laser radar scanning angle, the amplifying device of the laser radar scanning angle includes；Laser emitter, laser emitter is for emitting light beam；Collimator, the light exit side of the light incident side of collimator towards laser emitter；Scanned copy, the light exit side and reflecting surface of reflecting surface towards the collimator of scanned copy can be rotated relative to the light exit side of collimator；And shrink beam system, shrink beam system includes optics shrink beam unit, scanned copy is set to the entrance pupil of optics shrink beam unit, the light incident side of optics shrink beam unit is towards reflecting surface, when reflecting surface rotates the first preset angle relative to collimator, the angle of emergence of light beam through reflective surface rotates the second preset angle, and the light beam of the exit end outgoing through optics shrink beam unit rotates third preset angle, and third preset angle is greater than the second preset angle.For the amplifying device of the laser radar scanning angle without mechanical movement, scanning angle enlargement range is larger.
Description
Technical field
The utility model relates to laser radar technique field, the amplification more particularly to a kind of laser radar scanning angle is filled
It sets and laser radar system.
Background technique
Laser radar is the system to emit the characteristic quantities such as the position of detecting laser beam target, speed, is widely used in swashing
Optical detection field.Rotary scanning is needed in order to be adapted to two dimension and/or three-dimensional detection, the laser beam that laser radar is launched.
In order to reach biggish scanning speed, usual high-rate laser radar scanning angle very little is unfavorable for carrying out sweeping for a wide range of space
It retouches.
Existing wide-angle scan method is to carry out wide-angle deflection using mechanical rotating mirror, and this mode can bring vibration coupling
It closes, and scanning angle is limited.
Summary of the invention
Based on this, vibration coupling, and the problem that scanning angle is limited are easily caused for traditional mechanical rotating mirror deflection, is had
Necessity proposes the amplifying device and laser radar system of a kind of laser radar scanning angle, the amplification of the laser radar scanning angle
Device amplifies scanning angle by the optics shrink beam mode of optics shrink beam unit, and the amplification method is without mechanical movement, nothing
Power consumption or power consumption are extremely low, and extremely low without modulation or modulating frequency, scanning angle enlargement range is larger, available more accurate
Scanning angle；The laser radar system includes the amplifying device of above-mentioned laser radar scanning angle, therefore, the laser radar system
It is larger to scanning angle enlargement range.
Specific technical solution is as follows:
On the one hand, the utility model relates to a kind of amplifying devices of laser radar scanning angle, including；Laser emitter,
The laser emitter is for emitting light beam；Collimator, the light of the light incident side of the collimator towards the laser emitter
Exit end, for being collimated to the light beam；The light of scanned copy, reflecting surface towards the collimator of the scanned copy is emitted
It holds and the reflecting surface can be rotated relative to the light exit side of the collimator, for adjusting the scanning angle of the scanned copy；
And shrink beam system, the shrink beam system include optics shrink beam unit, the scanned copy is set to entering for the optics shrink beam unit
Pupil, the light incident side of the optics shrink beam unit is towards the reflecting surface, when the reflecting surface is relative to collimator rotation the
When one preset angle, the light beam through the reflective surface rotates the second preset angle, the outgoing through the optics shrink beam unit is brought out
The light beam rotation third preset angle penetrated, wherein the third preset angle is greater than second preset angle.
The amplifying device of above-mentioned laser radar scanning angle is set to the optics shrink beam when in use, by the scanned copy
At the entrance pupil of unit, in this way, light beam only has angular deflection without change in location in entrance pupil position, when scanned copy rotation first is pre-
If when angle, because emergent pupil is the picture of entrance pupil, light-beam position is constant at emergent pupil, as long as changing the angle of the light beam,
The size of such laser radar window can be smaller, convenient for integrated；Further, when in use, the collimator is to the laser
The light beam of transmitter transmitting is collimated, and makes light beam with scanned copy described in certain width directive, the reflecting surface of the scanned copy
The light velocity is reflected, the light incident side of optics shrink beam unit described in the light beam directive after reflection, when scanned copy rotation the
When one preset angle, second preset angle, the outgoing through the optics shrink beam unit are rotated by the light beam of the reflective surface
The light beam rotation third preset angle penetrated is brought out, the third preset angle is greater than second preset angle, in this way, the scanned copy
Scanning angle is amplified, and the optics shrink beam mode that the amplifying device of the laser radar scanning angle passes through optics shrink beam unit
Scanning angle is amplified, for the amplification method without mechanical movement, idle or power consumption are extremely low, without modulation or modulating frequency pole
Low, scanning angle enlargement range is larger, available more accurate scanning angle, and the service life is higher.
Technical solution is illustrated further below:
The amplifying device of the laser radar scanning angle further includes auxiliary amplifying unit, institute in one of the embodiments,
The emergent pupil that auxiliary amplifying unit is set to the optics shrink beam unit is stated, the light of the auxiliary amplifying unit enters end towards the light
The light exit side for learning shrink beam unit, when the reflecting surface rotates first preset angle relative to the collimator, through described anti-
Penetrate face reflection light beam the angle of emergence rotate second preset angle, through the optics shrink beam unit exit end outgoing light beam
Rotate the third preset angle, the light beam that the exit end through the auxiliary amplifying unit is emitted rotates the 4th preset angle, wherein institute
The 4th preset angle is stated greater than the third preset angle.
The auxiliary amplifying unit includes liquid crystal polarization gratings in one of the embodiments, the liquid crystal polarization gratings
It is set to the emergent pupil of the optics shrink beam unit, the light incident sides of the liquid crystal polarization gratings is towards the optics shrink beam unit
Light exit side.
The quantity of the liquid crystal polarization gratings is at least two in one of the embodiments, all described liquid crystal polarized
Grating is spaced setting in the same direction.
The liquid crystal polarization gratings include first for deflecting light beam along first direction in one of the embodiments,
Liquid crystal polarization gratings, and the second liquid crystal polarization gratings for that will deflect in a second direction light beam, the first liquid crystal polarization gratings
It is arranged with second liquid crystal polarization gratings interval, the light incident sides of first liquid crystal polarization gratings is towards the optics shrink beam
The light of the light exit side of unit, light exit side towards second liquid crystal polarization gratings of first liquid crystal polarization gratings is incident
End.
The liquid crystal polarization gratings include for being connected with external power source interconnecting piece in one of the embodiments,.
The auxiliary amplifying unit includes volume Bragg grating, volume Bragg grating setting in one of the embodiments,
Go out in the light of the emergent pupil of the optics shrink beam unit, light incident side towards the optics shrink beam unit of the volume Bragg grating
Penetrate end.
The auxiliary amplifying unit includes plano-concave cylindrical mirror in one of the embodiments, and the plano-concave cylindrical mirror includes concave surface,
The cross section of the concave surface is radiused cross-section, and the center of circle of the radiused cross-section is set to the optics shrink beam unit
Emergent pupil, and the concave surface is towards the light exit side of the optics shrink beam unit.
The optics shrink beam unit includes the first optically focused part and the second optically focused part in one of the embodiments, and described the
One optically focused part and the second optically focused part interval are arranged, the distance values etc. between the first optically focused part and the second optically focused part
In the focal length value of the first optically focused part and the sum of the focal length value of the second optically focused part, and the focal length value of the first optically focused part
Greater than the focal length value of the second optically focused part.
On the other hand, the utility model further relates to a kind of laser radar system, the amplification including laser radar scanning angle
Device.
The laser radar system when in use, the scanned copy is set at the entrance pupil of the optics shrink beam unit, such as
This, light beam only has angular deflection without change in location in entrance pupil position, when scanned copy rotates the first preset angle, because of emergent pupil
It is the picture of entrance pupil, so light-beam position is constant at emergent pupil, as long as changing the angle of the light beam, such laser radar window
Size can be smaller, convenient for integrated；Further, when in use, light beam of the collimator to the laser transmitter projects
It is collimated, makes light beam with scanned copy described in certain width directive, the reflecting surface of the scanned copy reflects the light velocity, instead
The light incident side of optics shrink beam unit described in light beam directive after penetrating, when the scanned copy rotates the first preset angle, by described
The light beam of reflective surface rotates second preset angle, the light beam rotation of the exit end outgoing through the optics shrink beam unit the
Three preset angles, the third preset angle is greater than second preset angle, in this way, the scanning angle of the scanned copy is amplified,
And the amplifying device of the laser radar scanning angle puts scanning angle by the optics shrink beam mode of optics shrink beam unit
Greatly, for the amplification method without mechanical movement, idle or power consumption are extremely low, extremely low without modulation or modulating frequency, scanning angle amplification
Amplitude is larger, available more accurate scanning angle, and the service life is higher.
Detailed description of the invention
Fig. 1 is the amplifying device of the laser radar scanning angle of the utility model embodiment；
Fig. 2 is the structural schematic diagram of the auxiliary amplifying unit of the utility model embodiment；
Fig. 3 is the structural schematic diagram of the plano-concave cylindrical mirror of the utility model embodiment；
Fig. 4 is the structural schematic diagram of the volume Bragg grating of the utility model embodiment.
Description of symbols:
100, the amplifying device of laser radar scanning angle, 110, laser emitter, 120, collimator, 130, scanned copy,
140, shrink beam unit, the 142, first optically focused part, the 144, second optically focused part, 150, auxiliary amplifying unit, 152, first is liquid crystal polarized
Grating, the 154, second liquid crystal polarization gratings, 160, plano-concave cylindrical mirror, 162, concave surface, 170, volume Bragg grating, 200, light beam.
Specific embodiment
It is below in conjunction with attached drawing and specifically real for the purpose of this utility model, technical solution and advantage is more clearly understood
Mode is applied, the utility model is described in further detail.It should be understood that the specific embodiments described herein
Only to explain the utility model, the protection scope of the utility model is not limited.
It should be noted that it can directly on the other element when element is referred to as " being set to " another element
Or there may also be elements placed in the middle.When element is referred to as " being fixedly arranged on " another element, it can be directly in another yuan
On part or there may also be elements placed in the middle.When an element is considered as " connection " another element, it be can be directly
It is connected to another element or may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ",
"left", "right" and similar statement for illustrative purposes only, are not meant to be the only embodiment.
It is important to point out that when element is referred to as " being fixedly arranged on " another element, two elements can be it is integrated,
It can be and be detachably connected between two elements.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specifically embodiment, it is not intended that in limitation the utility model.Term " and or " used herein packet
Include any and all combinations of one or more related listed items.
In addition it is also necessary to understand, in the present embodiment, term "lower", "upper", "front", "rear", "left", "right",
"inner", "outside", "top", "bottom", " side ", " other side ", " one end ", " other end ", etc. indicated by positional relationship be based on
Positional relationship shown in the drawings；The terms such as " first ", " second " are to distinguish different structure members.These terms are only
Convenient for description the utility model and simplify description, should not be understood as limiting the present invention.
As shown in Figure 1, the amplifying device 100 of one of embodiment laser radar scanning angle, including；Laser emission
Device 110, laser emitter 110 is for emitting light beam 200；Collimator 120, the light incident side of collimator 120 is towards Laser emission
The light exit side of device 110, for being collimated to light beam 200；Scanned copy 130, the reflecting surface of scanned copy 130 is towards collimator
120 light exit side and reflecting surface can be rotated relative to the light exit side of collimator 120, for adjusting the scanning of scanned copy 130
Angle；And shrink beam system, shrink beam system include optics shrink beam unit, scanned copy 130 is set to the entrance pupil of optics shrink beam unit, light
The light incident side of shrink beam unit is learned towards reflecting surface, when reflecting surface rotates the first preset angle relative to collimator 120, through reflecting surface
The angle of emergence of the light beam of reflection rotates the second preset angle, and the light beam 200 of the exit end outgoing through optics shrink beam unit rotates third
Preset angle, wherein third preset angle is greater than the second preset angle.
The amplifying device 100 of above-mentioned laser radar scanning angle is set to optics shrink beam list when in use, by scanned copy 130
At the entrance pupil of member, in this way, light beam 200 only has angular deflection without change in location in entrance pupil position, when scanned copy rotates first
When preset angle, because emergent pupil is the picture of entrance pupil, 200 position of light beam is constant at emergent pupil, as long as changing the angle of light beam 200
Degree, in this way, the size of laser radar window can be smaller, convenient for integrated；Further, when in use, collimator 120 sends out laser
The light beam 200 that emitter 110 emits is collimated, and makes light beam 200 with certain width directive scanned copy 130, scanned copy 130 it is anti-
It penetrates and is reflected in face of the light velocity, the light incident side of the 200 directive optics shrink beam unit of light beam after reflection, when scanned copy rotates first
When preset angle, the second preset angle is rotated by the light beam 200 of reflective surface, the light beam of the exit end outgoing through optics shrink beam unit
200 rotation third preset angles, and third preset angle is greater than the second preset angle, in this way, the scanning angle of scanned copy 130 is put
Greatly, and the amplifying device 100 of the laser radar scanning angle by the optics shrink beam mode of optics shrink beam unit to scanning angle
It amplifies, for the amplification method without mechanical movement, idle or power consumption are extremely low, scan angle extremely low without modulation or modulating frequency
It is larger to spend enlargement range, available more accurate scanning angle, and the service life is higher.Specifically, collimator 120 is collimating mirror
Or other collimation units, in this embodiment, collimator 120 is collimating mirror.
On the basis of the above embodiments, the amplifying device 100 of the laser radar scanning angle further includes that auxiliary amplification is single
Member 150.
As shown in Fig. 2, auxiliary amplifying unit 150 is set to the emergent pupil of optics shrink beam unit, the light of amplifying unit 150 is assisted
Enter light exit side of the end towards optics shrink beam unit, when reflecting surface rotates the first preset angle relative to collimator 120, through reflecting surface
The angle of emergence of the light beam of reflection rotates the second preset angle, and the light beam 200 of the exit end outgoing through optics shrink beam unit rotates third
Preset angle is assisted the light beam 200 of the exit end outgoing of amplifying unit 150 to rotate the 4th preset angle, wherein the 4th preset angle is big
In third preset angle.In this way, light beam 200 only has angular deflection without change in location in entrance pupil position, when scanned copy rotation the
When one preset angle, because emergent pupil is the picture of entrance pupil, 200 position of light beam is constant at emergent pupil, will assist amplifying unit 150
It is set at emergent pupil, the size of secondary auxiliary amplifying unit 150 can be smaller, convenient for integrated；Further, single by auxiliary amplification
First 150 pairs of scanning angles are further amplified, and increase the scanning range of scanning surface.On the basis of the embodiment, auxiliary is put
Big unit 150 includes liquid crystal polarization gratings, and liquid crystal polarization gratings are set to the emergent pupil of optics shrink beam unit, liquid crystal polarization gratings
Light exit side of the light incident side towards optics shrink beam unit.In this way, since liquid crystal polarization gratings pass through the phase of modulation circularly polarized light
Position generates angle, and when light beam penetrates liquid crystal polarization gratings, the light beam 200 of emergent light differs one with the light beam 200 of incident light
A PB phase, and then realize and change scanning angle.
Based on any of the above embodiments, the quantity of liquid crystal polarization gratings is at least two, all liquid-crystal polarized-lights
Grid are spaced setting in the same direction.The multistage of the scanning angle of scanned copy is amplified in this way, realizing.
Based on any of the above embodiments, liquid crystal polarization gratings include for deflecting light beam 200 along first direction
The first liquid crystal polarization gratings 152, and the second liquid crystal polarization gratings 154 for that will deflect in a second direction light beam 200,
One liquid crystal polarization gratings 152 and the setting of the second liquid crystal polarization gratings 154 interval, 152 first liquid crystal of the first liquid crystal polarization gratings are inclined
Light exit side of the light incident side of vibration grating 152 towards optics shrink beam unit, the light exit side court of the first liquid crystal polarization gratings 152
To the light incident side of the second liquid crystal polarization gratings 154.In this way, when in use, by being set to liquid crystal polarization gratings internal structure
It sets, the first liquid crystal polarization gratings 152 is configured to carry out light beam 200 liquid crystal polarization gratings of vertical direction deflection, it will
Second liquid crystal polarization gratings 154 are arranged to carry out light beam 200 liquid crystal polarization gratings of horizontal direction deflection, in this way, light beam
When 200 process the first liquid crystal polarization gratings 152 and the second liquid crystal polarization gratings 154, light beam 200 can be achieved at the same time horizontal and perpendicular
The upward deflection of histogram while promoting scanning angle, improves the amplifying device of the laser radar scanning angle in turn
100 scanning ranges.In this embodiment, the quantity of the first liquid crystal polarization gratings 152 is three, three the first liquid-crystal polarized-lights
The setting of the interval of grid 152, the quantity of the second liquid crystal polarization gratings 154 are three, and three the second liquid crystal polarization gratings 154 intervals are set
It sets, in this way, when light beam 200 is by can be realized three-level angle in the vertical direction when three the first liquid crystal polarization gratings 152
Amplification, when then passing through three the second liquid crystal polarization gratings 154, can be realized three-level angle enlargement in the horizontal direction.When
So, the quantity of the first liquid crystal polarization gratings 152 can be three or more, and the quantity of the second liquid crystal polarization gratings 154 can be
Three or more, as long as meeting the setting of all intervals of first liquid crystal polarization gratings 152, all second liquid crystal polarization gratings 154 are spaced
Setting, and the light exit side of the first liquid crystal polarization gratings 152 of least significant end is towards the second liquid crystal polarization gratings of front end
154.
On the basis of any of the above-described embodiment, liquid crystal polarization gratings include for being connected with external power source interconnecting piece.Such as
This, after liquid crystal polarization gratings power-up, incident light can be become special angle outgoing, angle tune after power down by liquid crystal polarization gratings
Event resolves processed, and according to different available positive and negative two angles of power-up, realize the modulation to 200 angle of light beam, thus
It realizes and changes scanning angle.
In the utility model other embodiments, auxiliary amplifying unit 150 includes volume Bragg grating 170.
As shown in figure 4, volume Bragg grating 170 is set to the emergent pupil of optics shrink beam unit, the light of volume Bragg grating 170
Light exit side of the incidence end towards optics shrink beam unit.Since volume Bragg grating 170 is a kind of three-dimensional grating, it is using ultraviolet
Line forms interference in specific glass, makes the refractive index of glass that permanent change occur, and light beam 200 generates grating effect after passing through,
And then change the angle of emergence, realize the amplification to scanning angle.
In the utility model other embodiments, auxiliary amplifying unit 150 includes plano-concave cylindrical mirror 160.
As shown in figure 3, plano-concave cylindrical mirror 160 includes concave surface 162, the cross section of concave surface 162 is radiused cross-section, arc-shaped
The center of circle of cross section is set to the emergent pupil of optics shrink beam unit, and concave surface 162 is towards the light exit side of optics shrink beam unit.Due to
Plano-concave cylindrical mirror 160 utilizes refraction principle, makes light beam 200 with bigger angle refraction, this method is simple, at low cost.
On the basis of any of the above-described embodiment, refering to what is shown in Fig. 1, optics shrink beam unit 140 includes 142 He of the first optically focused part
Second optically focused part 144, the first optically focused part 142 and the second optically focused part 144 interval are arranged, the first optically focused part 142 and the second optically focused part
Distance values between 144 are equal to the focal length value of the first optically focused part 142 and the sum of the focal length value of the second optically focused part 144, and first is poly-
The focal length value of light part 142 is greater than the focal length value of the second optically focused part 144.In this way, 144 shape of the first optically focused part 142 and the second optically focused part
At 4F shrink beam system, collimated light beam 200 is incident from the first optically focused part 142 after collimation, is still parallel from the outgoing of the second optically focused part 144
Light, shrink beam is than the focal distance ratio for the first optically focused part 142 and the second optically focused part 144, and angle enlargement is than being also the first optically focused part 142
With the focal distance ratio of the second optically focused part 144.By optical design, maximum 10 times of scan angle can be completed by shrink beam in practice
Degree amplification.In this embodiment, the first optically focused part 142 is the first positive lens, and the second optically focused part 144 is the second positive lens.
On the other hand, the utility model further relates to a kind of laser radar system, the amplification including laser radar scanning angle
Device 100.
The laser radar system when in use, scanned copy 130 is set at the entrance pupil of optics shrink beam unit, in this way, light
Beam 200 only has angular deflection without change in location in entrance pupil position, when scanned copy rotates the first preset angle, because emergent pupil is
The picture of entrance pupil, so 200 position of light beam is constant at emergent pupil, as long as changing the angle of light beam 200, such laser radar window
Size can be smaller, convenient for integrated；Further, when in use, the light beam 200 that collimator 120 emits laser emitter 110
It being collimated, makes light beam 200 with certain width directive scanned copy 130, the reflecting surface of scanned copy 130 reflects the light velocity,
The light incident side of 200 directive optics shrink beam unit of light beam after reflection, it is anti-by reflecting surface when scanned copy rotates the first preset angle
The light beam 200 penetrated rotates the second preset angle, and the light beam 200 of the exit end outgoing through optics shrink beam unit rotates third preset angle,
Third preset angle is greater than the second preset angle, in this way, the scanning angle of scanned copy 130 is amplified, and the laser radar scanning angle
The amplifying device 100 of degree amplifies scanning angle by the optics shrink beam mode of optics shrink beam unit, the amplification method without
Mechanical movement, idle or power consumption are extremely low, and extremely low without modulation or modulating frequency, scanning angle enlargement range is larger, can obtain
To more accurate scanning angle, and the service life is higher.
Each technical characteristic of above embodiments can be combined arbitrarily, for simplicity of description, not to above-described embodiment
In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance
Shield all should be considered as described in this specification.
Above embodiments only express the several embodiments of the utility model, and the description thereof is more specific and detailed, but simultaneously
The limitation to utility model patent range therefore cannot be interpreted as.It should be pointed out that for the ordinary skill people of this field
For member, without departing from the concept of the premise utility, various modifications and improvements can be made, these belong to this reality
With novel protection scope.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (10)
1. a kind of amplifying device of laser radar scanning angle, which is characterized in that including；
Laser emitter, the laser emitter is for emitting light beam；
Collimator, the light incident side of the collimator towards the laser emitter light exit side, for the light beam into
Row collimation；
Scanned copy, the reflecting surface of the scanned copy towards the collimator light exit side and the reflecting surface being capable of opposite institute
The light exit side rotation for stating collimator, for adjusting the scanning angle of the scanned copy；And
Shrink beam system, the shrink beam system include optics shrink beam unit, and the scanned copy is set to the optics shrink beam unit
Entrance pupil, the light incident side of the optics shrink beam unit is towards the reflecting surface, when the reflecting surface is rotated relative to the collimator
When the first preset angle, the light beam through the reflective surface rotates the second preset angle, the exit end through the optics shrink beam unit
The light beam of outgoing rotates third preset angle, wherein the third preset angle is greater than second preset angle.
2. the amplifying device of laser radar scanning angle according to claim 1, which is characterized in that further include auxiliary amplification
Unit, the auxiliary amplifying unit are set to the emergent pupil of the optics shrink beam unit, and the light of the auxiliary amplifying unit enters to hold court
To the light exit side of the optics shrink beam unit, when the reflecting surface rotates first preset angle relative to the collimator,
The angle of emergence of light beam through the reflective surface rotates second preset angle, the outgoing through the optics shrink beam unit is brought out
The light beam rotation the 4th that the light beam penetrated rotates the third preset angle, the exit end through the auxiliary amplifying unit is emitted is default
Angle, wherein the 4th preset angle is greater than the third preset angle.
3. the amplifying device of laser radar scanning angle according to claim 2, which is characterized in that the auxiliary amplification is single
Member includes liquid crystal polarization gratings, and the liquid crystal polarization gratings are set to the emergent pupil of the optics shrink beam unit, described liquid crystal polarized
Light exit side of the light incident side of grating towards the optics shrink beam unit.
4. the amplifying device of laser radar scanning angle according to claim 3, which is characterized in that the liquid-crystal polarized-light
The quantity of grid is at least two, and all liquid crystal polarization gratings are spaced setting in the same direction.
5. the amplifying device of laser radar scanning angle according to claim 4, which is characterized in that the liquid-crystal polarized-light
Grid include the first liquid crystal polarization gratings for deflecting light beam along first direction, and for that will deflect in a second direction light beam
The second liquid crystal polarization gratings, the first liquid crystal polarization gratings and second liquid crystal polarization gratings interval setting, first liquid
Towards the light exit side of the optics shrink beam unit, the light of first liquid crystal polarization gratings goes out the light incident side of brilliant polarization grating
Penetrate light incident side of the end towards second liquid crystal polarization gratings.
6. the amplifying device of laser radar scanning angle according to claim 5, which is characterized in that the liquid-crystal polarized-light
Grid include for being connected with external power source interconnecting piece.
7. the amplifying device of laser radar scanning angle according to claim 2, which is characterized in that the auxiliary amplification is single
Member includes volume Bragg grating, and volume Bragg grating is set to the emergent pupil of the optics shrink beam unit, the volume Bragg grating
Light incident side towards the optics shrink beam unit light exit side.
8. the amplifying device of laser radar scanning angle according to claim 2, which is characterized in that the auxiliary amplification is single
Member includes plano-concave cylindrical mirror, and the plano-concave cylindrical mirror includes concave surface, and the cross section of the concave surface is radiused cross-section, described arc-shaped
The center of circle of cross section is set to the emergent pupil of the optics shrink beam unit, and the light of the concave surface towards the optics shrink beam unit goes out
Penetrate end.
9. the amplifying device of laser radar scanning angle according to any one of claims 1 to 8, which is characterized in that described
Optics shrink beam unit includes the first optically focused part and the second optically focused part, and the first optically focused part is set with the second optically focused part interval
Set, the distance values between the first optically focused part and the second optically focused part be equal to the first optically focused part focal length value with it is described
The sum of the focal length value of second optically focused part, and the focal length value of the first optically focused part is greater than the focal length value of the second optically focused part.
10. a kind of laser radar system, which is characterized in that including the described in any item laser radar scanning angles of claim 1 to 9
The amplifying device of degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201821554401.1U CN209117858U (en) | 2018-09-21 | 2018-09-21 | The amplifying device and laser radar system of laser radar scanning angle |
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| CN201821554401.1U CN209117858U (en) | 2018-09-21 | 2018-09-21 | The amplifying device and laser radar system of laser radar scanning angle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109061607A (en) * | 2018-09-21 | 2018-12-21 | 深圳市速腾聚创科技有限公司 | The amplifying device and laser radar system of laser radar scanning angle |
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2018
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109061607A (en) * | 2018-09-21 | 2018-12-21 | 深圳市速腾聚创科技有限公司 | The amplifying device and laser radar system of laser radar scanning angle |
| CN109061607B (en) * | 2018-09-21 | 2024-05-14 | 深圳市速腾聚创科技有限公司 | Laser radar scanning angle amplifying device and laser radar system |
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