CN207764474U - A kind of device of novel light beam scanning - Google Patents
A kind of device of novel light beam scanning Download PDFInfo
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- CN207764474U CN207764474U CN201721652060.7U CN201721652060U CN207764474U CN 207764474 U CN207764474 U CN 207764474U CN 201721652060 U CN201721652060 U CN 201721652060U CN 207764474 U CN207764474 U CN 207764474U
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- speculum
- lens
- cylindrical lens
- light
- light beam
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Abstract
The utility model discloses a kind of devices of novel light beam scanning.The light beam rearrangement group formed including MEMS mirror, lens group and by mirror system；Lens group includes lens, the first cylindrical lens and the second cylindrical lens；Lens are diode laser array colimated light system, and the light that semiconductor laser is sent out is converted into parallel light emergence by lens and enters the first cylindrical lens；Directional light is converged to MEMS mirror by the first cylindrical lens, and the first cylindrical lens pool directional light by the second cylindrical lens and enter the second cylindrical lens again；Mirror system includes being made of 2 big 6 small reflectors；2 large reflective mirrors include the first speculum and the second speculum that light beam is assigned to both direction.The utility model can to avoid the decline problem for the beam quality that angle enlargement is brought, whole optical texture it is few as possible use lens, cost relatively low.
Description
Technical field
The utility model belongs to range laser radar technical field, more particularly to a kind of device of novel light beam scanning.
Background technology
Laser radar is generally used more due to the limitation of light source repetition rate in order to maintain higher cloud sweep speed
The mode of line scanning.Together by multiple single line laser radar longitudinal stacks, each single line is responsible for one to this scan mode
Scanning in plane.According to the product of Velodyne, it may be seen that each line is responsible for 360 ° × 2 ° of scanning range.
As the development of MEMS galvanometers replaces traditional electromechanical scanning system to become next-generation laser with MEMS galvanometers
The developing direction of radar.Due to not having a machinery rotation not part, the energy consumption and stability of system have not small such scanning system
Promotion.But the scanning angle very little of MEMS galvanometers generally only has the several years, and which has limited the use scopes of MEMS galvanometers.In order to
Allow MEMS galvanometers that can realize the wideangle scanning of single line, it is general that model is scanned to extend it using the method for installing additional lens system additional
It encloses.This method, which often may require that, uses non-spherical lens so that cost is higher, while the angular amplification meeting that lens system is brought
So that the decline of the far-field analysis of scanning light beam.
Utility model content
The purpose of this utility model is to provide a kind of device of novel light beam scanning, by by 120 ° traditional of scanning
Range-partition is responsible for a piece of region per Shu Jiguang, finally the region that they are scanned is stitched together at 6 20 ° of scanning area
Just become complete 120 ° of region, solves the energy consumption of the apparatus system of existing light beam scanning and stability is poor asks
Topic.
In order to solve the above technical problems, the utility model is achieved through the following technical solutions：
The utility model is a kind of device of novel light beam scanning, including MEMS mirror, lens group and by speculum system
The light beam rearrangement group of system composition；The lens group includes lens, the first cylindrical lens and the second cylindrical lens；The lens are partly to lead
Body laser linear array colimated light system, the light that the semiconductor laser is sent out are converted into parallel light emergence by lens and enter first
Cylindrical lens；Directional light is converged to MEMS mirror by first cylindrical lens, and first cylindrical lens pass through the second cylindrical lens weight
The new directional light that pools enters the second cylindrical lens；The mirror system includes being made of 2 big 6 small reflectors；Described 2 big reflections
Mirror includes the first speculum and the second speculum that light beam is assigned to both direction；6 small reflector include third speculum,
4th speculum, the 5th speculum, the 6th speculum, the 7th speculum and the 8th speculum；The third speculum, the 4th are instead
Penetrate mirror, the 5th speculum is sequentially located at the side of the first speculum, the 6th speculum, the 7th speculum and the 8th speculum
It is sequentially located at the side of the second speculum；Range of the angle of adjacent two speculum of homonymy at 10-20 °.
Further, the MEMS galvanometers provide the optical scanner of ± 5 ° of 20 ° of mechanical scanning angle realization.
The utility model has the advantages that：
1,120 ° traditional of scanning range by being divided into 6 20 ° of scanning area by the utility model.It is such to sweep
Angle MEMS galvanometers itself are retouched to can be realized as.Additional lens system is not needed.It is responsible for a piece of region per Shu Jiguang, finally will
The region that they are scanned is stitched together and just becomes complete 120 ° of region.
2, the utility model can adjust scanning range and to scan by adjusting the deflection angle of each small speculum
Region becomes larger or becomes smaller, while can also increase the quantity of light beam and the quantity of speculum so that it can scan the range of bigger.
3, the utility model can be to avoid the decline problem for the beam quality that angle enlargement is brought, and whole optical texture is as possible
Few uses lens, cost relatively low.
Certainly, any product for implementing the utility model does not necessarily require achieving all the advantages described above at the same time.
Description of the drawings
In order to illustrate more clearly of the technical solution of the utility model embodiment, make required for being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the utility model,
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Other attached drawings.
Fig. 1 is the structural schematic diagram of overall optical system；
Fig. 2 is front end MEMS galvanometer scanning system schematic diagrames；
Fig. 3 is mirror system schematic diagram；
Fig. 4 is far-field scanning schematic diagram.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
The all other embodiment obtained, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be understood that term " trepanning ", "upper", "lower", " thickness ", "top",
" in ", " length ", "inner", indicating positions or the position relationship such as " surrounding ", be merely for convenience of description the utility model and simplification
Description, does not indicate or imply the indicated component or element must have a particular orientation, with specific azimuth configuration and behaviour
Make, therefore should not be understood as limiting the present invention.
It please referring to Fig.1 shown in -4, the utility model is a kind of device of novel light beam scanning, including MEMS mirror 003,
Lens group and the light beam rearrangement group being made of mirror system；The lens group includes lens 001, the first cylindrical lens 002, second
Cylindrical lens 004；Lens 001 are diode laser array colimated light system, and the light that semiconductor laser is sent out passes through 001 turn of lens
It turns to parallel light emergence and enters the first cylindrical lens 002；Directional light is converged to MEMS mirror 003 again by the first cylindrical lens 002
It pools directional light and enters the second cylindrical lens 004；Mirror system includes being made of 2 big 6 small reflectors；2 large reflective mirrors include
Light beam is assigned to the first speculum 010 and the second speculum 011 of both direction；6 small reflectors include third speculum 012,
4th speculum 013, the 5th speculum 014, the 6th speculum 015, the 7th speculum 016 and the 8th speculum 017；Third is anti-
Penetrate the side that mirror 012, the 4th speculum 013, the 5th speculum 014 are sequentially located at the first speculum 010, the 6th speculum 015,
7th speculum 016 and the 8th speculum 017 are sequentially located at the side of the second speculum 011；The folder of adjacent two speculum of homonymy
Range of the angle at 10-20 °.MEMS galvanometers provide the optical scanner of ± 5 ° of 20 ° of mechanical scanning angle realization.
The light that semiconductor line paroxysm goes out is converted into a kind of parallel light emergence after the collimation of lens 001, by first
MEMS galvanometers 003 are converged in after cylindrical lens 002 to be reflected into the second cylindrical lens 004, and 20 ° of scan angle is provided by galvanometer later
Degree is being re-converted into parallel light emergence by the second cylindrical lens 004.At this moment this group of directional light enters mirror system, pass through
Speculum 010 and 011 is divided into 2 groups every group 3 beam light.
This three-beam arrives separately at respectively corresponding small reflector 012-017. wherein 012 and provides (- 60 °--40 °)
Scanning range, wherein 013 provides the scanning range of (- 40 °--20 °), wherein 014 provides the scanning range of (- 20 ° -0 °),
In 015 provide (0 ° -20 °) scanning range, wherein 016 provide (20 ° -40 °) scanning range, wherein 012 provide
The scanning range of (40 ° -60 °), this 6 groups of light beams will piece together a piece of -60 ° -60 ° of 120 ° of scanning range in far field.It is logical
The deflection angle for adjusting each small speculum is crossed, we can adjust scanning range and scanning area is made to become larger or become smaller, together
When we can also increase the quantity of light beam and the quantity of speculum so that it can scan the range of bigger.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained in at least one of the utility model
In embodiment or example.In the present specification, schematic expression of the above terms be not necessarily referring to identical embodiment or
Example.Moreover, particular features, structures, materials, or characteristics described can be in any one or more embodiments or example
In can be combined in any suitable manner.
The preferred embodiment in the utility model disclosed above is only intended to help to illustrate the utility model.Preferred embodiment is simultaneously
There is no the details that detailed descriptionthe is all, does not limit the specific implementation mode that the utility model is only described yet.Obviously, according to this theory
The content of bright book can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to preferably
The principles of the present invention and practical application are explained, to enable skilled artisan to be best understood by and utilize this
Utility model.The utility model is limited only by the claims and their full scope and equivalents.
Claims (2)
1. a kind of device of novel light beam scanning, it is characterised in that：Including MEMS mirror (003), lens group and by speculum
The light beam rearrangement group of system composition；
The lens group includes lens (001), the first cylindrical lens (002), the second cylindrical lens (004)；
The lens (001) are diode laser array colimated light system, and the light that the semiconductor laser is sent out passes through lens
(001) it is converted into parallel light emergence and enters the first cylindrical lens (002)；First cylindrical lens (002) converge to directional light
MEMS mirror, first cylindrical lens (002) by the second cylindrical lens (004) pool again directional light into the second column it is saturating
Mirror (004)；
The mirror system includes being made of 2 big 6 small reflectors；2 large reflective mirror includes that light beam is assigned to both direction
The first speculum (010) and the second speculum (011)；6 small reflector includes third speculum (012), the 4th reflection
Mirror (013), the 5th speculum (014), the 6th speculum (015), the 7th speculum (016) and the 8th speculum (017)；
The third speculum (012), the 4th speculum (013), the 5th speculum (014) are sequentially located at the first speculum
(010) side, the 6th speculum (015), the 7th speculum (016) and the 8th speculum (017) are sequentially located at second
The side of speculum (011)；Range of the angle of adjacent two speculum of homonymy at 10-20 °.
2. a kind of device of novel light beam scanning according to claim 1, which is characterized in that the MEMS galvanometers offer ±
5 ° of mechanical scanning angle realizes 20 ° of optical scanner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721652060.7U CN207764474U (en) | 2017-12-01 | 2017-12-01 | A kind of device of novel light beam scanning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721652060.7U CN207764474U (en) | 2017-12-01 | 2017-12-01 | A kind of device of novel light beam scanning |
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| Publication Number | Publication Date |
|---|---|
| CN207764474U true CN207764474U (en) | 2018-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721652060.7U Expired - Fee Related CN207764474U (en) | 2017-12-01 | 2017-12-01 | A kind of device of novel light beam scanning |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111308441A (en) * | 2018-12-12 | 2020-06-19 | 宁波舜宇车载光学技术有限公司 | Laser radar transmitting device and assembling method |
-
2017
- 2017-12-01 CN CN201721652060.7U patent/CN207764474U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111308441A (en) * | 2018-12-12 | 2020-06-19 | 宁波舜宇车载光学技术有限公司 | Laser radar transmitting device and assembling method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190428 Address after: Room 508, R&D Center Building, China (Hefei) International Intelligent Voice Industry Park, 3333 Xiyou Road, Hefei High-tech Zone, 230000, Anhui Province Patentee after: Hefei Dominant Intelligent Technology Co., Ltd. Address before: 230000 Room 298, H2 Building, Phase II, Innovation Industrial Park, 2800 Innovation Avenue, Hefei High-tech Zone, Anhui Province Patentee before: Hefei core Intelligent Technology Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190527 Address after: Room 508, R&D Center Building, China (Hefei) International Intelligent Voice Industry Park, 3333 Xiyou Road, Hefei High-tech Zone, 230000, Anhui Province Patentee after: Hefei Dominant Intelligent Technology Co., Ltd. Address before: 230000 Room 298, H2 Building, Phase II, Innovation Industrial Park, 2800 Innovation Avenue, Hefei High-tech Zone, Anhui Province Patentee before: Hefei core Intelligent Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180824 Termination date: 20201201 |