CN105739103A - Method and apparatus for converting diverging light emitted by laser chip into uniform scattering lines - Google Patents
Method and apparatus for converting diverging light emitted by laser chip into uniform scattering lines Download PDFInfo
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- CN105739103A CN105739103A CN201610237483.6A CN201610237483A CN105739103A CN 105739103 A CN105739103 A CN 105739103A CN 201610237483 A CN201610237483 A CN 201610237483A CN 105739103 A CN105739103 A CN 105739103A
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- lens
- laser
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- diaphragm
- scattering
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/095—Refractive optical elements
- G02B27/0955—Lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
Abstract
The invention discloses a method and apparatus for converting diverging light emitted by a laser chip into uniform scattering lines, and relates to the technical field of 3D structural optical scanning, especially to a 3D laser face identification scan technology and apparatuses. A diaphragm for adjusting laser beams is installed on the center of an exit port of the laser chip, a combined lens formed by a convergent lens and a scattering lens is sequentially installed on one side of the diaphragm, the light beams emitted by the laser chip is collimated into parallel light beams through the diaphragm, and the parallel light beams are scattered into lines with uniform distributed energy density. Since a special diaphragm is employed, the characteristic convergent lens and specific lens with non-cylindrical surface can scatter the diverging light emitted by a laser chip into high quality laser beams, of which the scattering angle is high and the energy distribution uniformity is good. The laser diffusion angle is greater, the lines are finer, and the energy distribution uniformity is better. The scanning precision and scanning area are improved.
Description
Technical field
The invention discloses a kind of diverging light by chip of laser outgoing and become method and the device of homogenous diffusion lines, relate to 3D structure light scan technical field, particularly relate to 3D laser recognition of face scanning technique and device.
Background technology
In 3D structure light scan device, specific laser lines are irradiated on object under test, calculate the information of object again through the pattern characteristics modulated by body surface of shooting, be a kind of 3D structure light scan technology conventional at present.Specific laser lines are important technologies in 3D scanning imagery, are the restraining factors of 3D scanning imagery quality.In general similar products, the light channel structure being formed by of laser lines is simple cylindrical mirror or simple Bao Weier prism.The laser lines that this series products all exists scattering are relatively thick, and the problem that energy distribution of laser is poor affects scanning imagery quality.Therefore high-quality laser lines, possess laser diffusion angle bigger, and lines are more tiny, the better feature of energy distribution of laser, can be obviously improved scanning accuracy and scan area.
Summary of the invention
The present invention provides a kind of diverging light by chip of laser outgoing to be changed to method and the device of homogenous diffusion lines, realize being scattering into the divergent beams of laser chip outgoing the function of lines light beam, and have higher scattering angle and good energy distribution of laser.
Technical scheme shows as employing compound lens and the divergent beams of laser chip outgoing is scattering into lines light beam.
A kind of method that diverging light by chip of laser outgoing is changed to homogenous diffusion lines, it is characterized in that the diaphragm at chip of laser exit portal center mounting and adjusting laser beam, the compound lens being made up of plus lens and dispersing lens is installed successively in the side of diaphragm, first will collimate as collimated light beam by the laser chip outgoing beam of diaphragm, then there are the more uniform lines of energy density distribution being scattering into by collimated light beam.
Chip of laser launches laser beam, passes sequentially through diaphragm, plus lens and dispersing lens.Diaphragm adjusts incident beam and becomes suitable size, and the width of this beam size and final scattering lines is directly related.Then light beam incidence plus lens, is collimated into collimated light beam, continues through after non-spherical lens and is scattering into line style light beam.
Described plus lens is coquille, or non-spherical lens.The effect of plus lens is that laser instrument pools collimated light beam, or is non-parallel light in levels of scatter face, and is directional light at relative vertical.Its effect is that light beam enters after dispersing lens, scattering direction light beam there is not scattering and in relative vertical generation scattering.And when scattering plane be non-parallel smooth time, it is possible to adjusted the position of focus by the degree of its scattering or convergence.
Described dispersing lens is cylindrical lens, and its cross section is circular or semicircle, and longitudinal section is rectangle.Its effect is in horizontal process, incident beam to be scattered.It addition, the cross section of dispersing lens is cylinder face or non-cylinder, longitudinal section is rectangle.
A kind of diverging light by chip of laser outgoing is changed to the device of homogenous diffusion lines, it is characterized in that the diaphragm including being placed in chip of laser outgoing beam center, also include the compound lens of plus lens and the dispersing lens composition being arranged in order in described diaphragm side.、
Further, described diaphragm is before plus lens, or between plus lens and dispersing lens, or after dispersing lens.
Further, setting described diaphragm and be between laser chip and plus lens, by the size of the aperture of the diaphragm, be adjusted into the area of plus lens light beam, the area of incident beam directly affects the thickness of final scattering laser lines.And the thickness of laser light scattering lines and final scanning accuracy in 3D scanning application process are directly related.Therefore, suitable diaphragm can effectively adjust coupling efficiency and the scanning accuracy of system.
Further, described plus lens is sphere or aspheric surface convex lens, and plus lens can will pool a branch of collimated beam by the incident beam of diaphragm.
Further, described dispersing lens is non-cylindrical lens, and the collimated light beam that plus lens converges can be converged and be scattering into laser lines again by dispersing lens.
The specifically used process of the present invention is, chip of laser produces scattering laser light beam, it is adjusted to the incident beam that area is suitable by diaphragm, then pass through plus lens and be changed to collimated beam, this collimated light beam is again incident on dispersing lens, dispersing lens continues to converge and disperse in the horizontal direction, and unchanged in the vertical direction, thus final outgoing beam is changed to a linear light.
The method and apparatus that diverging light by chip of laser outgoing provided by the invention is changed to homogenous diffusion lines, owing to adopting specific diaphragm, the plus lens of characteristic and specific non-cylindrical lens, the divergent beams of laser chip outgoing can be scattering into high-quality laser lines light beam, and have higher scattering angle and good energy distribution of laser, possesses laser diffusion angle bigger, lines are more tiny, the better feature of energy distribution of laser, can be obviously improved scanning accuracy and scan area.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the principle of device schematic diagram (comprising longitudinal and transverse two directions) that a kind of diverging light by chip of laser outgoing of the present invention is changed to homogenous diffusion lines；
Fig. 2 is the device energy profile that a kind of diverging light by chip of laser outgoing of the present invention is changed to homogenous diffusion lines；
Fig. 3 is the device energy profile that a kind of diverging light by chip of laser outgoing of the present invention is changed to homogenous diffusion lines.
In figure: 1-chip of laser, 2-diaphragm, 3-plus lens, 4-dispersing lens.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
With specifically embodiment, technical scheme is described in detail below.These specific embodiments can be combined with each other below, is likely to repeat no more in some embodiment for same or analogous concept or process.
The device of homogenous diffusion lines it is changed to for a kind of diverging light by chip of laser outgoing of the present invention, it is characterized in that the diaphragm 2 including being placed in chip of laser 1 outgoing beam center, at the compound lens that described diaphragm side is made up of plus lens 3 and dispersing lens 4 successively.
Further, described diaphragm 2 is in before plus lens 3, or between plus lens 3 and dispersing lens 4, or after dispersing lens 4, it is also possible to a diaphragm 2 is respectively put in above position.
Further, limit described diaphragm 2 and be between laser chip 1 and plus lens 3, by the size in diaphragm 2 aperture, be adjusted into the area of plus lens 3 light beam.The area of incident beam directly affects the thickness of final scattering laser lines, and the thickness of laser light scattering lines and final scanning accuracy in 3D scanning application process are directly related.Therefore, suitable diaphragm 2 can effectively adjust coupling efficiency and the scanning accuracy of system.
Further, described plus lens 3 is generally sphere or aspheric surface convex lens, and plus lens 3 can will pool a branch of collimated beam by the incident beam of diaphragm 2.
Further, described dispersing lens 4 is non-cylindrical lens.The collimated light beam that plus lens 3 is converged by it converges and is scattering into laser lines again.
Chip of laser 1 outgoing beam size is adjusted to applicable projected area by described diaphragm 2；The outgoing beam of laser chip 1 is collimated as collimated light beam by plus lens 3；Collimated light beam is scattering into by dispersing lens 4 has the more uniform lines of energy density distribution.
Chip of laser 1 launches laser beam, passes sequentially through diaphragm 2, plus lens and dispersing lens.Diaphragm adjusts incident beam and becomes suitable size, and the width of this beam size and final scattering lines is directly related.Then light beam incidence plus lens 3, is collimated into collimated light beam, continues through dispersing lens 4 and is scattering into line style light beam.
Fig. 1 is the principle of device schematic diagram that a kind of diverging light by chip of laser outgoing of the present invention is changed to homogenous diffusion lines.
In certain embodiments, plus lens is coquille, and in other embodiment, plus lens is non-spherical lens.The effect of plus lens is that laser instrument pools collimated light beam, or is non-parallel light in levels of scatter face, and is directional light at relative vertical.Its effect is that light beam enters after dispersing lens, scattering direction light beam there is not scattering and in relative vertical generation scattering.And when scattering plane be non-parallel smooth time, it is possible to adjusted the position of focus by the degree of its scattering or convergence.
In certain embodiments, dispersing lens is cylindrical lens or non-cylindrical lens, and its cross section is circular or parabola shaped, and longitudinal section is rectangle.Its effect is in horizontal process, incident beam to be scattered.
As in figure 2 it is shown, laser beam shines after optical texture of the present invention from laser chip, formed one first converge after the line style light beam of scattering.
Energy distribution of laser higher as shown in Figure 3.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, it is not intended to limit；Although the present invention being described in detail with reference to foregoing embodiments, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or wherein some or all of technical characteristic is carried out equivalent replacement；And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (8)
1. the method that the diverging light by chip of laser outgoing is changed to homogenous diffusion lines, it is characterized in that the diaphragm at chip of laser exit portal center mounting and adjusting laser beam, the compound lens being made up of plus lens and dispersing lens is installed successively in the side of diaphragm, first by being collimated light beam by the laser chip outgoing beam collimation of diaphragm, then again collimated light beam is scattering into and there are the more uniform lines of energy density distribution.
2. the method that the diverging light by chip of laser outgoing according to claim 1 is changed to homogenous diffusion lines, it is characterized in that described plus lens is coquille, or non-spherical lens, the effect of plus lens is that laser instrument is pooled collimated light beam, or it is non-parallel light in levels of scatter face, and be directional light at relative vertical, its effect is after light beam enters dispersing lens, scattering is there is not and in relative vertical generation scattering at scattering direction light beam, and when scattering plane be non-parallel smooth time, the position of focus can be adjusted by the degree of its scattering or convergence.
3. the method that the diverging light by chip of laser outgoing according to claim 1 is changed to homogenous diffusion lines, it is characterized in that described dispersing lens is cylindrical lens or non-cylindrical lens, its cross section is circular or parabola shaped, longitudinal section is rectangle, and its effect is in horizontal process, incident beam to be scattered.
4. the diverging light by chip of laser outgoing is changed to the device of homogenous diffusion lines, it is characterized in that the diaphragm including being placed in chip of laser outgoing beam center, also include the compound lens of plus lens and the dispersing lens composition being arranged in order in described diaphragm side.
5. the diverging light by chip of laser outgoing according to claim 4 is changed to the device of homogenous diffusion lines, it is characterised in that described diaphragm is before plus lens, or between plus lens and dispersing lens, or after dispersing lens.
6. the diverging light by chip of laser outgoing according to claim 4 is changed to the device of homogenous diffusion lines, it is characterized in that described diaphragm is between laser chip and plus lens, by the size of the aperture of the diaphragm, being adjusted into the area of plus lens light beam, the area of incident beam directly affects the thickness of final scattering laser lines.
7. the diverging light by chip of laser outgoing according to claim 4 is changed to the device of homogenous diffusion lines, plus lens described in its feature is sphere or aspheric surface convex lens, and plus lens can will pool a branch of collimated beam by the incident beam of diaphragm.
8. the diverging light by chip of laser outgoing according to claim 4 is changed to the device of homogenous diffusion lines, dispersing lens described in its feature is non-cylindrical lens, and the collimated light beam that plus lens converges can be converged and be scattering into laser lines again by dispersing lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610237483.6A CN105739103A (en) | 2016-04-18 | 2016-04-18 | Method and apparatus for converting diverging light emitted by laser chip into uniform scattering lines |
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| CN201610237483.6A CN105739103A (en) | 2016-04-18 | 2016-04-18 | Method and apparatus for converting diverging light emitted by laser chip into uniform scattering lines |
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| CN105739103A true CN105739103A (en) | 2016-07-06 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107064907A (en) * | 2017-03-07 | 2017-08-18 | 北京环境特性研究所 | A kind of laser beam emitting device of new LRCS test systems |
| CN109856900A (en) * | 2018-11-27 | 2019-06-07 | 玉晶光电(厦门)有限公司 | Optical lens group |
| CN112558383A (en) * | 2021-01-05 | 2021-03-26 | 深圳市本特利科技有限公司 | Zooming illumination device for underwater target detection |
| WO2021258294A1 (en) * | 2020-06-23 | 2021-12-30 | Oppo广东移动通信有限公司 | Electronic device, unlocking method and apparatus, and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101770075A (en) * | 2009-12-25 | 2010-07-07 | 武汉凌云光电科技有限责任公司 | Linear beam shaping optical system |
| CN102621694A (en) * | 2012-03-21 | 2012-08-01 | 中国科学院光电技术研究所 | Shaping and collimating device for stripped astigmatic bundles |
| CN202582545U (en) * | 2012-03-22 | 2012-12-05 | 马英俊 | Wide-angle linear light spot laser |
| CN103336366A (en) * | 2013-06-06 | 2013-10-02 | 西北大学 | Device capable of generating uniform linear laser beams based on high-numerical aperture cylindrical lens focusing |
| CN104360485A (en) * | 2014-11-04 | 2015-02-18 | 北京凌云光技术有限责任公司 | Linear laser light source and image acquisition system |
-
2016
- 2016-04-18 CN CN201610237483.6A patent/CN105739103A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101770075A (en) * | 2009-12-25 | 2010-07-07 | 武汉凌云光电科技有限责任公司 | Linear beam shaping optical system |
| CN102621694A (en) * | 2012-03-21 | 2012-08-01 | 中国科学院光电技术研究所 | Shaping and collimating device for stripped astigmatic bundles |
| CN202582545U (en) * | 2012-03-22 | 2012-12-05 | 马英俊 | Wide-angle linear light spot laser |
| CN103336366A (en) * | 2013-06-06 | 2013-10-02 | 西北大学 | Device capable of generating uniform linear laser beams based on high-numerical aperture cylindrical lens focusing |
| CN104360485A (en) * | 2014-11-04 | 2015-02-18 | 北京凌云光技术有限责任公司 | Linear laser light source and image acquisition system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107064907A (en) * | 2017-03-07 | 2017-08-18 | 北京环境特性研究所 | A kind of laser beam emitting device of new LRCS test systems |
| CN109856900A (en) * | 2018-11-27 | 2019-06-07 | 玉晶光电(厦门)有限公司 | Optical lens group |
| WO2021258294A1 (en) * | 2020-06-23 | 2021-12-30 | Oppo广东移动通信有限公司 | Electronic device, unlocking method and apparatus, and storage medium |
| CN112558383A (en) * | 2021-01-05 | 2021-03-26 | 深圳市本特利科技有限公司 | Zooming illumination device for underwater target detection |
| CN112558383B (en) * | 2021-01-05 | 2022-02-01 | 深圳市本特利科技有限公司 | Be used for target detection under water to zoom lighting apparatus |
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Application publication date: 20160706 |
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