CN112987286B - Light beam scanning system based on volume Bragg grating - Google Patents
Light beam scanning system based on volume Bragg grating Download PDFInfo
- Publication number
- CN112987286B CN112987286B CN202110429815.1A CN202110429815A CN112987286B CN 112987286 B CN112987286 B CN 112987286B CN 202110429815 A CN202110429815 A CN 202110429815A CN 112987286 B CN112987286 B CN 112987286B
- Authority
- CN
- China
- Prior art keywords
- bragg grating
- rotating
- rotating platform
- volume bragg
- included angle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/10—Scanning systems
- G02B26/106—Scanning systems having diffraction gratings as scanning elements, e.g. holographic scanners
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
Abstract
The invention discloses a light beam scanning system based on volume Bragg grating, which comprises a first rotating platform, a first volume Bragg grating, a second rotating platform, a second volume Bragg grating and a rotating platform connector, wherein the first rotating platform is provided with a first rotating platform; the first integral Bragg grating and the first rotating platform form an included angle alpha; the second volume Bragg grating and the second rotating platform form an included angle beta; the first rotating table and the second rotating table are arranged at an included angle gamma; the first rotating platform is connected with the second rotating platform through a rotating platform connector; when the first rotary table is rotated under the drive of its own drive means, the second rotary table follows the rotation of the first rotary table while the second rotary table is also rotated under its own drive means. The invention aims to provide a rotator Bragg grating-based light beam scanning system which can realize light beam scanning with low rotational inertia, high efficiency, independence on polarization and wide angle range.
Description
Technical Field
The invention relates to the technical field of light beam control, in particular to a light beam scanning system based on volume Bragg gratings.
Background
The method realizes flexible control of the beam direction, and has wide application prospect in the fields of space optics, information optics and the like such as laser communication, laser radar, projection display, virtual reality and the like. However, it is difficult for the conventional beam scanning system to achieve advantages of low rotational inertia, high efficiency, polarization independence, and a large scanning angle range.
Disclosure of Invention
The invention aims to provide a light beam scanning system based on volume Bragg gratings and a using method thereof, which can realize the light beam scanning of incident light beams in low moment of inertia, high efficiency, irrelevant polarization and large angle range through two volume Bragg gratings, greatly simplify the light path of the system, reduce the harsh requirement on a laser and greatly improve the application range and the adaptability of the existing light beam scanning system.
The invention is realized by the following technical scheme:
a light beam scanning system based on volume Bragg grating comprises a first rotating platform, a first volume Bragg grating, a second rotating platform, a second volume Bragg grating and a rotating platform connector;
the first integral Bragg grating and the first rotating platform form an included angle alpha, and the included angle alpha belongs to [ alpha 1-delta alpha, alpha 1+ delta alpha ]; wherein α 1 represents a bragg incident angle of the first volume bragg grating, and Δ α represents a deviation value;
the second volume Bragg grating and the second rotating platform form an included angle beta, and the included angle beta belongs to [ beta 1-delta beta, beta 1+ delta beta ]; wherein β 1 represents a bragg incident angle of the second volume bragg grating, and Δ β represents a deviation value;
the first rotating table and the second rotating table are arranged at an included angle gamma, and the diffraction light direction of the first integral Bragg grating is superposed with the rotating shaft of the second rotating table; wherein the included angle γ is equal to an angle difference between incident light of the first volume bragg grating and diffracted light of the first volume bragg grating;
the first rotating table and the second rotating table are connected through the rotating table connector; when the first rotary table is rotated by its own driving device, the second rotary table is rotated by following the first rotary table through the rotary table connector, and at the same time, the second rotary table is also rotated by its own driving device.
Preferably, the first and second rotary tables are identical in structure;
the first rotating platform comprises a rotating device, a driving device and a fixing device; one end of the driving device is arranged on the fixing device, and the other end of the driving device is connected with the rotating device; when the driving device works, the rotating device is driven to rotate.
Preferably, the fixing device of the second rotating table is fixedly connected with the rotating device of the first rotating table through the rotating table connector; when the rotating device of the first rotating platform rotates, the fixing device of the second rotating platform is driven to rotate.
Preferably, the included angle α is a bragg incident angle of the first bragg grating.
Preferably, the included angle β takes a bragg incident angle of the second volume bragg grating.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the volume Bragg grating is adopted as the rotated body, the rotational inertia is low, and the advantage of low rotational inertia is higher in comparison with other modes under the condition that the light-passing aperture is larger;
2. the volume Bragg grating is adopted as a rotated body, and when the volume Bragg grating meets Bragg conditions, the diffraction efficiency is close to 100 percent, so that only two volume Bragg gratings are involved in the optical path of the system, the loss of other optical components is not needed, and the overall efficiency is high;
3. the volume Bragg grating is adopted, the polarization state of the light beam is not required, so that the polarization state of the laser is not required to be limited, and the application range of the system can be effectively widened.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic diagram of a beam scanning system according to the present invention;
FIG. 2 is a schematic view of the Bragg grating vector relationship of the rotator of the present invention;
FIG. 3 is a schematic diagram of the two-stage scanning coverage principle of the present invention;
reference numbers and corresponding part names in the drawings:
1. a first volume Bragg grating; 2. a second volume Bragg grating; 31. a rotating device of the first rotating platform; 32. a fixing device of the first rotating platform; 41. a rotating device of the second rotating table; 42. a fixing device of the second rotating platform; 5. a rotating table connector.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Examples
A volume bragg grating based beam scanning system, as shown in fig. 1, includes a first rotating stage, a first volume bragg grating 1, a second rotating stage, a second volume bragg grating 2 and a rotating stage connector 5.
Specifically, in the present embodiment, the first volume bragg grating 1 and the first rotating platform are disposed at an included angle α, and due to the characteristics of the volume bragg grating, when the incident angle of the incident light is around the bragg incident angle, the incident light can be diffracted by the volume bragg grating. Therefore, in order to make the incident light always satisfy the bragg condition of the first bragg grating 1 when the first rotating platform rotates, the diffracted light beam of the first bragg grating 1 can scan an angular cone around the rotating shaft of the first rotating platform, and the range of the included angle α is set as [ α 1- Δ α, α 1+ Δ α ]; where α 1 represents the bragg incident angle of the first bragg grating 1, Δ α represents an offset value, and the magnitude of the offset value is related to the first bragg grating 1. Although the above scheme can be implemented when the included angle α is in the range of [ α 1- Δ α, α 1+ Δ α ], in order to maximize the overall diffraction efficiency, the included angle between the first bragg grating 1 and the first rotating stage should be equal to the bragg incident angle of the first bragg grating 1. Similarly, the second volume bragg grating 2 and the second rotating platform form an included angle β, and the included angle β belongs to [ β 1- Δ β, β 1+ Δ β ]; where β 1 denotes a bragg incident angle of the second volume bragg grating 2, and Δ β denotes a bias value.
In addition, the first rotating table and the second rotating table of the present embodiment have the same structure, and each of the first rotating table and the second rotating table includes a rotating device, a driving device and a fixing device; one end of the driving device is arranged on the fixing device, and the other end of the driving device is connected with the rotating device; when the driving device works, the rotating device is driven to rotate.
Specifically, in the present embodiment, the fixing device 32 of the first rotating table and the fixing device 42 of the second rotating table are disposed at an included angle γ, and the fixing device 42 of the second rotating table and the rotating device 31 of the first rotating table are fixedly connected through the rotating table connector 5; when the rotating means 31 of the first rotating table rotates, the fixing means 42 of the second rotating table is rotated, so that the second volume bragg grating 2 and the second rotating table as a whole rotate together at the same speed as the first volume bragg grating 1, and since the second rotating table further has a driving means, the rotating means 41 of the second rotating table can also rotate by the driving of its own driving means. Wherein, contained angle gamma equals the angle difference of the incident light of first volume bragg grating 1 and the diffracted light of first volume bragg grating 1 to guarantee that the diffracted light of first volume bragg grating 1 coincides with the rotation axis of second revolving stage, promptly: when the diffracted light from the first volume bragg grating 1 is incident on the second volume bragg grating 2, the diffracted light satisfies the bragg condition of the second volume bragg grating 2.
In this embodiment, the arrangement described above can ensure that the bragg conditions of the first and second bragg gratings 1 and 2 are always satisfied when the first and second rotary stages rotate simultaneously.
It is noted that in order for the incident light beam to satisfy the bragg condition of the first volume bragg grating 1, the incident light beam should be made coincident with the rotation axis of the first rotation stage.
The principle of this solution is explained below:
in any one of the volume Bragg gratings, when the incident light satisfies the Bragg condition, the incident wave vector
Diffraction wave vector
Raster vector
The vector relationship between momentum matching is shown in figure 2. During rotation (volume Bragg grating rotation), due to incident wave vectors
Direction invariant, raster vector
Rotating, and thus diffracting, the wave vector
And also rotates with it, i.e. the diffracted beam will scan a pyramid.
In the scheme, two volume bragg gratings are arranged and are matched with each other in a rotating manner, and if a screen is placed on a plane of vertical incident light, a light spot scanning track on the section is as shown in fig. 3. First, the incident light is transmitted to the first bragg grating 1, and since the first bragg grating 1 rotates along with the rotation axis, the diffracted light of the first bragg grating 1 scans a pyramid which appears as a circular line in cross section (the coarse scale scans the corresponding circular line in fig. 3). The second volume bragg grating 2 of the present application includes two parts of rotation (rotation and rotation following the first volume bragg grating 1), and the incident light of the second volume bragg grating 2 is the diffracted light of the first volume bragg grating 1, so the diffracted light of the second volume bragg grating 2 will continue to scan the angular cone around a point on a circular line (a circular line corresponding to the coarse scanning in fig. 3), and will also appear as a circle on the cross section (a circular line corresponding to the fine scanning in fig. 3). When the circle center position traverses all positions on the circular line, the final outgoing beam traverses all points inside the peripheral great circle in fig. 3 (the two volume bragg gratings are the same, and the circular radii of the two scans are the same), and when viewed from a three-dimensional space, the final outgoing beam covers a rotating cone, and the rotating cone takes the center of the first volume bragg grating 1 as a vertex, the rotating shaft of the first rotating platform as a rotating shaft, and the combined line of the incident light and the diffracted light of the second volume bragg grating 2 as a rotating arm.
In the scheme, the integral angle scanning range of the light beam scanning system is related to the incident light and outgoing light included angle of the volume Bragg grating, and the larger the included angle is, the larger the final angle scanning range is. By designing the structure of the volume Bragg grating, a large incident light and outgoing light included angle is easy to obtain, so that the light beam scanning system can easily realize scanning in a large angle range under the condition of not increasing the complexity of the system. For example, for laser with a wavelength of 532nm, a grating period of 2um is designed, a grating incidence angle is 7.64 degrees, a scanning cone angle of the first volume bragg grating 1 is 30.6 degrees, and a final total scanning cone angle range is 61.2 degrees; the grating period 1um, the incident angle 15.4 °, the scanning cone angle 61.6 ° of the first bragg grating 1, and the final total scanning cone angle range 122.2 ° are designed. By design, a larger angular scanning range can also be achieved.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (5)
1. A light beam scanning system based on volume Bragg grating is characterized by comprising a first rotating platform, a first volume Bragg grating (1), a second rotating platform, a second volume Bragg grating (2) and a rotating platform connector (5);
the first integral Bragg grating (1) and the first rotating table form an included angle alpha, and the included angle alpha belongs to [ alpha 1-delta alpha, alpha 1+ delta alpha ]; wherein α 1 represents a bragg incidence angle of the first volume bragg grating (1), and Δ α represents a deviation value;
the second volume Bragg grating (2) and the second rotating platform form an included angle beta, and the included angle beta belongs to [ beta 1-delta beta, beta 1+ delta beta ]; wherein β 1 represents a bragg incident angle of the second volume bragg grating (2), and Δ β represents a deviation value;
the first rotating platform and the second rotating platform form an included angle gamma, and the included angle gamma is equal to the angle difference between incident light of the first integral Bragg grating (1) and diffraction light of the first integral Bragg grating (1);
the first rotating table and the second rotating table are connected through the rotating table connector (5); when the first rotary table is rotated under the drive of its own drive means, the second rotary table is rotated following the first rotary table by means of the rotary table connector (5), while the second rotary table is also rotated under its own drive means.
2. The system according to claim 1, wherein the first rotating stage and the second rotating stage are identical in structure and each comprises a rotating device, a driving device and a fixing device; one end of the driving device is arranged on the fixing device, and the other end of the driving device is connected with the rotating device; when the driving device works, the rotating device is driven to rotate.
3. A volumetric bragg grating based optical beam scanning system according to claim 2, wherein the fixing means (42) of the second rotary stage is fixedly connected to the rotating means (31) of the first rotary stage via the rotary stage connector (5); when the rotating device (31) of the first rotating platform rotates, the fixing device (42) of the second rotating platform is driven to rotate.
4. A volume bragg grating based optical beam scanning system according to any one of claims 1 to 3, wherein the included angle α is a bragg incident angle of the first volume bragg grating (1).
5. A volumetric bragg grating based beam scanning system according to any one of claims 1 to 3, wherein said included angle β is a bragg angle of incidence of said second volumetric bragg grating (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110429815.1A CN112987286B (en) | 2021-04-21 | 2021-04-21 | Light beam scanning system based on volume Bragg grating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110429815.1A CN112987286B (en) | 2021-04-21 | 2021-04-21 | Light beam scanning system based on volume Bragg grating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112987286A CN112987286A (en) | 2021-06-18 |
| CN112987286B true CN112987286B (en) | 2021-07-20 |
Family
ID=76341480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110429815.1A Active CN112987286B (en) | 2021-04-21 | 2021-04-21 | Light beam scanning system based on volume Bragg grating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112987286B (en) |
Citations (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4848867A (en) * | 1988-02-10 | 1989-07-18 | Hitachi Cable Limited | Rotary joint for polarization plane maintaining optical fibers |
| US5018803A (en) * | 1985-02-04 | 1991-05-28 | Robotic Vision Systems, Inc. | Three-dimensional volumetric sensor |
| US5714750A (en) * | 1992-12-04 | 1998-02-03 | Psc Inc. | Bar code scanning and reading apparatus and diffractive light collection device suitable for use therein. |
| CN1380581A (en) * | 2001-04-09 | 2002-11-20 | 阿尔卡塔尔公司 | Blag grating filter otpical waveguide device |
| CN1534326A (en) * | 2003-03-28 | 2004-10-06 | 台达电子工业股份有限公司 | Multiple reflecting mirror module |
| CN1602433A (en) * | 2001-12-17 | 2005-03-30 | 佳能株式会社 | Optical element and scanning optical system having the same, and image forming apparatus |
| CN201173996Y (en) * | 2008-03-21 | 2008-12-31 | 深圳市镭宇激光科技有限公司 | Laser lamp scanning head and laser device for performance |
| CN102150070A (en) * | 2008-09-11 | 2011-08-10 | 微视公司 | Distortion altering optics for MEMS scanning display systems or the like |
| CN103348537A (en) * | 2011-12-29 | 2013-10-09 | 昆特里尔资产股份有限公司 | Universal device for energy concentration |
| CN103592713A (en) * | 2013-11-29 | 2014-02-19 | 苏州大学 | Sidelobe-free angle-selection laser filter |
| CN104423117A (en) * | 2013-09-06 | 2015-03-18 | 斯克林集团公司 | Light Modulator And Exposure Head |
| CN204360011U (en) * | 2014-12-30 | 2015-05-27 | 黄真理 | A kind of detection parallel light scanning device |
| CN104793334A (en) * | 2015-04-02 | 2015-07-22 | 同济大学 | Cascading coarse-fine data coupling optical scanning device |
| CN105388546A (en) * | 2015-12-21 | 2016-03-09 | 中国工程物理研究院流体物理研究所 | Concave volume holographic grating |
| CN105873344A (en) * | 2016-03-22 | 2016-08-17 | 中国工程物理研究院流体物理研究所 | Transverse gradient multi-layer film reflective element based X-ray monoenergetic imaging method |
| GB201806318D0 (en) * | 2018-04-18 | 2018-05-30 | Red Sensors Ltd | A method of lidar scanning |
| CN207663045U (en) * | 2017-08-28 | 2018-07-27 | 北京海德瑞科技有限公司 | A kind of laser scanning device |
| CN108873316A (en) * | 2018-07-09 | 2018-11-23 | 中国科学院上海光学精密机械研究所 | Muti-piece multichannel is multiplexed volume Bragg grating and cascades angular deflection device |
| CN109443246A (en) * | 2018-11-30 | 2019-03-08 | 湖北工业大学 | Axial cone mirror cone angle detection device and method based on diffraction light-free Moire fringe |
| CN109459849A (en) * | 2017-09-06 | 2019-03-12 | 脸谱科技有限责任公司 | On-mechanical light beam for depth sense turns to |
| US10317772B1 (en) * | 2016-12-29 | 2019-06-11 | Facebook Technologies, Llc | Switchable bragg gratings for chromatic error correction of pancharatnam berry phase (PBP) components |
| CN110161678A (en) * | 2019-04-18 | 2019-08-23 | 深圳市麓邦技术有限公司 | Optical beam scanner and its scan method |
| CN110554513A (en) * | 2019-08-30 | 2019-12-10 | 中国科学院上海光学精密机械研究所 | optical fiber array device for debugging grating compressor and debugging method thereof |
| CN110998358A (en) * | 2017-05-23 | 2020-04-10 | 罗伯特·博世有限公司 | Lidar device with increased scanning frequency and method for scanning a scanning area |
| CN110999000A (en) * | 2017-06-13 | 2020-04-10 | 努布鲁有限公司 | High-density wavelength beam combined laser system |
| CN210690503U (en) * | 2019-05-15 | 2020-06-05 | 北方民族大学 | Liquid chromatography detection device |
| US10690919B1 (en) * | 2017-02-17 | 2020-06-23 | Facebook Technologies, Llc | Superluminous LED array for waveguide display |
| CN112327398A (en) * | 2020-11-20 | 2021-02-05 | 中国科学院上海光学精密机械研究所 | Preparation method of vector compensation volume Bragg grating angle deflector |
| CN112368627A (en) * | 2018-07-12 | 2021-02-12 | 深圳源光科技有限公司 | Optical scanner |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101217557B1 (en) * | 2006-08-02 | 2013-01-02 | 삼성전자주식회사 | Laser module being able to modulate directly and laser display employing the same |
| US9683892B2 (en) * | 2015-10-14 | 2017-06-20 | Beijing Information Science & Technology University | Fiber grating demodulation system for enhancing spectral resolution by finely rotating imaging focus mirror |
| EP3711121B1 (en) * | 2017-11-17 | 2022-11-23 | Cobolt AB | External cavity diode laser arrangement |
-
2021
- 2021-04-21 CN CN202110429815.1A patent/CN112987286B/en active Active
Patent Citations (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5018803A (en) * | 1985-02-04 | 1991-05-28 | Robotic Vision Systems, Inc. | Three-dimensional volumetric sensor |
| US4848867A (en) * | 1988-02-10 | 1989-07-18 | Hitachi Cable Limited | Rotary joint for polarization plane maintaining optical fibers |
| US5714750A (en) * | 1992-12-04 | 1998-02-03 | Psc Inc. | Bar code scanning and reading apparatus and diffractive light collection device suitable for use therein. |
| CN1380581A (en) * | 2001-04-09 | 2002-11-20 | 阿尔卡塔尔公司 | Blag grating filter otpical waveguide device |
| CN1602433A (en) * | 2001-12-17 | 2005-03-30 | 佳能株式会社 | Optical element and scanning optical system having the same, and image forming apparatus |
| CN1534326A (en) * | 2003-03-28 | 2004-10-06 | 台达电子工业股份有限公司 | Multiple reflecting mirror module |
| CN201173996Y (en) * | 2008-03-21 | 2008-12-31 | 深圳市镭宇激光科技有限公司 | Laser lamp scanning head and laser device for performance |
| CN102150070A (en) * | 2008-09-11 | 2011-08-10 | 微视公司 | Distortion altering optics for MEMS scanning display systems or the like |
| CN103348537A (en) * | 2011-12-29 | 2013-10-09 | 昆特里尔资产股份有限公司 | Universal device for energy concentration |
| CN104423117A (en) * | 2013-09-06 | 2015-03-18 | 斯克林集团公司 | Light Modulator And Exposure Head |
| CN103592713A (en) * | 2013-11-29 | 2014-02-19 | 苏州大学 | Sidelobe-free angle-selection laser filter |
| CN204360011U (en) * | 2014-12-30 | 2015-05-27 | 黄真理 | A kind of detection parallel light scanning device |
| CN104793334A (en) * | 2015-04-02 | 2015-07-22 | 同济大学 | Cascading coarse-fine data coupling optical scanning device |
| CN105388546A (en) * | 2015-12-21 | 2016-03-09 | 中国工程物理研究院流体物理研究所 | Concave volume holographic grating |
| CN105873344A (en) * | 2016-03-22 | 2016-08-17 | 中国工程物理研究院流体物理研究所 | Transverse gradient multi-layer film reflective element based X-ray monoenergetic imaging method |
| US10317772B1 (en) * | 2016-12-29 | 2019-06-11 | Facebook Technologies, Llc | Switchable bragg gratings for chromatic error correction of pancharatnam berry phase (PBP) components |
| US10690919B1 (en) * | 2017-02-17 | 2020-06-23 | Facebook Technologies, Llc | Superluminous LED array for waveguide display |
| CN110998358A (en) * | 2017-05-23 | 2020-04-10 | 罗伯特·博世有限公司 | Lidar device with increased scanning frequency and method for scanning a scanning area |
| CN110999000A (en) * | 2017-06-13 | 2020-04-10 | 努布鲁有限公司 | High-density wavelength beam combined laser system |
| CN207663045U (en) * | 2017-08-28 | 2018-07-27 | 北京海德瑞科技有限公司 | A kind of laser scanning device |
| CN109459849A (en) * | 2017-09-06 | 2019-03-12 | 脸谱科技有限责任公司 | On-mechanical light beam for depth sense turns to |
| GB201806318D0 (en) * | 2018-04-18 | 2018-05-30 | Red Sensors Ltd | A method of lidar scanning |
| CN108873316A (en) * | 2018-07-09 | 2018-11-23 | 中国科学院上海光学精密机械研究所 | Muti-piece multichannel is multiplexed volume Bragg grating and cascades angular deflection device |
| CN112368627A (en) * | 2018-07-12 | 2021-02-12 | 深圳源光科技有限公司 | Optical scanner |
| CN109443246A (en) * | 2018-11-30 | 2019-03-08 | 湖北工业大学 | Axial cone mirror cone angle detection device and method based on diffraction light-free Moire fringe |
| CN110161678A (en) * | 2019-04-18 | 2019-08-23 | 深圳市麓邦技术有限公司 | Optical beam scanner and its scan method |
| CN210690503U (en) * | 2019-05-15 | 2020-06-05 | 北方民族大学 | Liquid chromatography detection device |
| CN110554513A (en) * | 2019-08-30 | 2019-12-10 | 中国科学院上海光学精密机械研究所 | optical fiber array device for debugging grating compressor and debugging method thereof |
| CN112327398A (en) * | 2020-11-20 | 2021-02-05 | 中国科学院上海光学精密机械研究所 | Preparation method of vector compensation volume Bragg grating angle deflector |
Non-Patent Citations (5)
| Title |
|---|
| Design and fabrication of multiplexed volume Bragg gratings as angle amplifiers in high power beam scanning system;Chen, Peng 等;《OPTICS EXPRESS》;20180917;第26卷(第19期);第25336-25346页 * |
| Improving the spatial resolution of volume Bragg grating two-dimensional monochromatic images;Duan, Jiazhu 等;《APPLIED OPTICS》;20180420;第57卷(第12期);第3159-3165页 * |
| Large-mode-volume multiwaveguide distributed feedback resonator;Zhao, Xiangjie 等;《OPTICAL ENGINEERING》;20161130;第55卷(第11期);第116105页 * |
| Table-top combined scanning X-ray small angle scattering and transmission microscopies of lipid vesicles dispersed in free-standing gel;Scattarella, Francesco 等;《RSC ADVANCES》;20210101;第11卷(第1期);第484-492页 * |
| 旋转光栅在激光多普勒测量中的应用;孙渝生等;《应用激光》;19840430;第4卷(第02期);第69-70页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112987286A (en) | 2021-06-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4638322A (en) | Multiple feed antenna | |
| CA1085017A (en) | Optical scanning apparatus | |
| AU714216B2 (en) | Optical beam scanning apparatus, and method for manufacturing stationary hologram plate, and hologram rotor, and optical wiring apparatus | |
| US4624528A (en) | Scanning systems with polygon scanner having curved facets | |
| EP0696360B1 (en) | Holographic laser scanner and rangefinder | |
| CN101614878B (en) | System for producing various vector beams | |
| JPH0421164B2 (en) | ||
| JPS5887472A (en) | Optical scanner reversing plurality of member around common axis by means of common driving source | |
| US4312590A (en) | Optical scanner and system for laser beam exposure of photo surfaces | |
| US4413177A (en) | Optical scanning apparatus incorporating counter-rotation of primary and secondary scanning elements about a common axis by a common driving source | |
| CN112987286B (en) | Light beam scanning system based on volume Bragg grating | |
| US6129307A (en) | Stabilized optical gimbal assembly | |
| CA1234419A (en) | Dual mode scanner/tracker | |
| US3602571A (en) | Optical beam scanner providing angular displacements of large beam diameters over wide fields of view | |
| JP2001281583A (en) | Scanning optical system | |
| WO2008137597A3 (en) | Optical scan engine using rotating mirror sectors | |
| CA1129232A (en) | Multifaceted mirror tracker for scanning system | |
| CN108983434B (en) | Multi-concave-surface grating coaxial assembly system and method | |
| CN110515200A (en) | A kind of composite shaft single lens reflex type airborne laser communication track sight | |
| US20060279827A1 (en) | Wide angle beam director | |
| CN116366155B (en) | Compact annular vision field satellite laser communication terminal | |
| CN112285913A (en) | Double-fast-reflection-mirror imaging system for compensating image motion | |
| Enard | ESO VLT Project: I. A status report | |
| Montagu | Two-axis beam-steering systems: TABS | |
| CN216051337U (en) | Efficient optical path folding device and optical path amplification Fourier transform spectrometer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |