CN202975558U - Laser lens capable of providing compensation light source to line-scan camera - Google Patents
Laser lens capable of providing compensation light source to line-scan camera Download PDFInfo
- Publication number
- CN202975558U CN202975558U CN 201220735617 CN201220735617U CN202975558U CN 202975558 U CN202975558 U CN 202975558U CN 201220735617 CN201220735617 CN 201220735617 CN 201220735617 U CN201220735617 U CN 201220735617U CN 202975558 U CN202975558 U CN 202975558U
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Abstract
The utility model discloses a laser lens capable of providing a compensation light source to a line scan camera. The laser lens comprises a front-end optical assembly, a lens sleeve, an adjusting mechanism and an optical fiber connector; the front-end optical assembly includes a powell lens and a plano-convex lens; the adjusting mechanism includes a semi-cylindrical lens and an optical fiber connector connecting block; the powell lens, the plano-convex lens, the semi-cylindrical lens and the optical fiber connector connecting block are successively arranged inside the lens sleeve in a front-to-back manner; and the optical fiber connector connecting block is connected with the optical fiber connector. A circular light spot which is emitted by a laser from the optical fiber connector is emitted to the semi-cylindrical lens and is converted into an elliptic light spot; after the plano-convex lens performs condensation on the elliptic light spot, the elliptic light spot is emitted to the powell lens; and the elliptic light spot is emitted in a lineation manner. The distance between the semi-cylindrical lens and the plano-convex lens can be adjusted through an adjusting sleeve which is sleeved on the outer side of the lens sleeve; and the front-end optical assembly can rotate circumferentially, such that light emission direction can be adjusted. With the laser lens of the utility model adopted, collected images of the line-scan camera can be fully exposed in lateral shot, long shot and close shot, and overexposure or underexposure can be avoided.
Description
Technical field
The utility model relates to the field, specifically, is a kind of laser lens that suitable compensatory light is provided for line-scan digital camera.
Background technology
TFDS(lorry fault rail edge image detection system) etc. the Train Dynamic image capturing system more and more adopts line-scan digital camera to gather the train image, and train is carried out round-the-clock monitoring.But in monitor procedure, can there be the situation (night, overcast and rainy etc.) of available light deficiency, have just produced the problem how in the backlight environment, the train image to be identified thus, just need to be the line-scan digital camera light source that affords redress in this case.
Adopting high-power floodlight is the line-scan digital camera light source that affords redress, because the floodlight energy is not concentrated, make photographic images reach enough brightness, need sizable power, cause Efficiency Decreasing, simultaneously, when daytime, solar radiation was to camera, can produce over-exposed phenomenon, anti-sunlight interference performance a little less than.
Therefore the employing laser instrument occurred as light source, the point-like light of laser instrument being launched by laser lens is converted to Line of light, is embodied as the line-scan digital camera light source that affords redress.The linear energy of light source of laser is concentrated, and has improved efficient; Its spectrum is near-infrared band, by add narrow band pass filter after camera lens, can avoid sunlight to disturb.
But the compensatory light two ends light that adopts at present that this mode provides is weak, the middle part light intensity, makes image that line-scan digital camera gathers under-exposed near track side, and middle part, line-scan digital camera visual field is over-exposed; On perpendicular to the line-scan digital camera scan-line direction, compensatory light is divergence expression, and light intensity and at a distance a little less than light nearby makes image that line-scan digital camera gathers over-exposed, under-exposed at train bottom crossbar etc. nearby at a distance.
The utility model content
In order to address the above problem, the utility model proposes a kind of can the cooperation with line-scan digital camera, as the line-scan digital camera compensatory light, be applied to railway TFDS(lorry fault rail edge image detection system), TVDS(passenger vehicle fault rail edge image detection system), TEDS(motor-car fault rail edge image detection system) etc. the laser lens in the Train Dynamic image capturing system.A little less than this camera lens sends linear light sorurce two ends light intensity, middle part light, image that line-scan digital camera is adopted also can fully exposed near track side, and the viewing field of camera middle part can overexposure; Send converging light on vertical linear array camera scanning line direction, make the image that line-scan digital camera gathers can overexposure at train bottom crossbar etc. nearby, and also can fully expose at a distance apart from camera in the train bottom.Make thus the image that line-scan digital camera gathers at horizontal, far and near Jing Chu, suitable exposure be arranged.
The utility model is the afford redress laser lens of light source of line-scan digital camera, comprises front end optical module, lens sleeve, governor motion and fibre-optical splice.
Described governor motion comprises semicylindrical lens, lens holder A, fibre-optical splice contiguous block, regulating sleeve; Wherein, semicylindrical lens is clamped by lens holder A, the coaxial rear, lens sleeve inside that is arranged on; And semicylindrical lens projection one side is towards sleeve rear end; The fibre-optical splice contiguous block is positioned at lens sleeve, and front end and lens holder A are connected, and the regulating sleeve that rear end and thread bush are connected on the lens sleeve lateral wall is connected; The fibre-optical splice contiguous block has the connection optical-fibre channel that connects fibre-optical splice contiguous block rear and front end face; The bright dipping end of fibre-optical splice contiguous block fibre-optical splice is threaded with optical-fibre channel; And make the bright dipping end and the coaxial setting of lens sleeve of fibre-optical splice.
Above-mentioned front end optical module comprises Bao Weier prism and reshaping device; Wherein, reshaping device comprises plano-convex lens and lens holder B, and plano-convex lens is clamped by lens holder B, the coaxial lens sleeve inside of being arranged on; And projection one end of plano-convex lens is towards the lens sleeve front end; The Bao Weier prism is arranged in lens sleeve, and the lens sleeve madial wall is rotationally connected between circumferentially; And be positioned at plano-convex lens the place ahead.
The utility model has the advantage of:
1, the utility model laser lens can send converging light on perpendicular to the line-scan digital camera scan-line direction, send the light that two ends are strong, the middle part is slightly weak on the line-scan digital camera scan-line direction being parallel to, the image that line-scan digital camera collects all can fully be exposed at horizontal, far and near Jing Chu, effectively avoid overexposure or under-exposed phenomenon;
2, the utility model laser lens can be realized the adjustment of correlation outlet light source direction and the adjustment of optical power density;
3, the utility model laser lens one-piece construction is meticulous small and exquisite, dismounting, installation facility.
Description of drawings
Fig. 1 is the utility model laser lens one-piece construction schematic diagram.
In figure:
1-front end optical module 2-lens sleeve 3-governor motion 4-fibre-optical splice
5-fixed head 101-Bao Weir prism 102-reshaping device 102a-plano-convex lens
102b-lens holder B 103-reshaping device sleeve 104-prism mounting cylinder 301-semicylindrical lens
302-lens holder A 303-fibre-optical splice contiguous block 304-regulating sleeve 305-flange
The 306-location-plate
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
The utility model is the afford redress laser lens of light source of line-scan digital camera, comprises front end optical module 1, lens sleeve 2, governor motion 3 and fibre-optical splice 4, as shown in Figure 1.
Described governor motion 3 comprises semicylindrical lens 301, lens holder A302, fibre-optical splice contiguous block 303, regulating sleeve 304; Wherein, semicylindrical lens 301 is clamped by lens holder A302, and semicylindrical lens 301 projection one sides are towards lens sleeve 2 rear ends.Lens holder A302 is fixedly mounted on lens sleeve 2 inner rear, realizes the coaxial positioning of 2 of semicylindrical lens 301 and lens sleeves.Fibre-optical splice contiguous block 303 is positioned at lens sleeve 2; Fibre-optical splice contiguous block 303 front end faces and lens holder A302 are connected, and the regulating sleeve 304 that rear end and thread bush are connected on lens sleeve 2 lateral walls is connected.Upwards be designed with flange 305 in 303 rear end face weeks of fibre-optical splice contiguous block in the utility model, flange 305 is by regulating sleeve 304 rear end faces, and the location-plate 306 that is fixedly connected with regulating sleeve 304 rear end face bolts is fixedly clamped, and is convenient to dismounting, changes and maintenance.Fibre-optical splice contiguous block 303 inside have the optical-fibre channel that runs through fibre-optical splice contiguous block 303 front/rear ends; Be threaded between the optical-fibre channel at the bright dipping end of fibre-optical splice 4 and fibre-optical splice contiguous block 303 rear end face places, and make the bright dipping end and the coaxial setting of lens sleeve 2 of fibre-optical splice 4.For the light that fibre-optical splice 4 bright dipping end-fires are gone out can be injected on semicylindrical lens 301 fully, therefore, optical-fibre channel is designed to have enlarged diameter section and reduced diameter section; Reduced diameter section is used for connecting fibre-optical splice 4 bright dipping ends; The enlarged diameter section diameter is not less than the diameter of semicylindrical lens 301, the space that is used to incident light to provide to disperse.By said structure, the pointolite that fibre-optical splice 4 light inputting ends send laser instrument (circle hot spot) is injected in the interior semicylindrical lens 301 of lens sleeve 2; After justifying spot shaping and be ellipse light spot by semicylindrical lens 301, incide in front end optical module 1; Above-mentioned regulating sleeve 304 front end faces are adjustable in distance convex lens 48mm ~ 68mm scope, can drive fibre-optical splice contiguous block 303, lens holder A302 jointly along lens sleeve 2 axially-movables by rotating regulating sleeve 304 thus, realize semicylindrical lens 301 motion on lens sleeve 2 is axial; Therefore in this process, because 4 employings of fibre-optical splice contiguous block 303 and fibre-optical splice are threaded, when rotating regulating sleeve 304, fibre-optical splice 4 can not produce radially and the motion that makes progress in week.
Above-mentioned front end optical module 1 comprises Bao Weier prism 101 and reshaping device 102; Wherein, reshaping device 102 is made of plano-convex lens 102a and lens holder B102b, plano-convex lens 102a is clamped by lens holder B102b, and lens holder B102b is fixedly mounted on lens sleeve 2 inner the place ahead, makes 2 coaxial positioning of plano-convex lens 201a and lens sleeve; And projection one end of plano-convex lens 102a is towards lens sleeve 2 front ends, and the horizontal range that plano-convex lens 102a and semicylindrical lens are 301 is 40mm-60mm.Described Bao Weir prism 101 is by the polishing moulding, make laser beam by after can be divided into optimization that optical density is even, good stability, straight line that rectilinearity is good; Bao Weier prism 101 is arranged in lens sleeve 2 with lens sleeve 2 madial walls and is rotationally connected between circumferentially, and is positioned at plano-convex lens 102a the place ahead, and Bao Weier prism 101 can be rotated in a circumferential direction, and realizes adjusting the line source direction by 101 ejaculations of Bao Weier prism.Elliptical light after semicylindrical lens 301 is injected on plano-convex lens 102a in reshaping device 102 thus, after carrying out optically focused by plano-convex lens 102a, be injected into Bao Weier prism 101 and rule (converting laser beam to subparallel line source), cover the line-scan digital camera sweep trace.And regulate semicylindrical lenses 301 and plano-convex lens 102a spacings by governor motion 304, and then regulate finally width and the optical power density of the line source that is penetrated by Bao Weier prism 101.
For the ease of dismounting, replacing and the maintenance of reshaping device 102 with Bao Weier prism 101, the utility model is arranged on reshaping device 102 in reshaping device sleeve 103, reshaping device sleeve 103 is arranged on lens sleeve 2 inner the place ahead, and pass connecting hole on lens sleeve 2 lateral walls by screw, realize that reshaping device sleeve 103 is fixing with lens sleeve 2.Bao Weier prism 101 is fixedly mounted in prism mounting cylinder 104, and 103, prism mounting cylinder 104 and reshaping device sleeve are connected by bolt, and Bao Weier prism 101 and the radial and axial relative position of plano-convex lens 102a are fixed.Thus can be by rotating whole front end optical module 1, Bao Weier prism 101 is rotated, thereby realize adjusting the line source direction that is penetrated by Bao Weier prism 101, after adjusting the emergent light direction, by bolt, that reshaping device sleeve 103 is fixing again, with fastening front end optical module 1.Simultaneously, the difference of the fastening degree by screw can realize finely tuning the emergent light direction, with better covering camera scanning line.
Also be designed with the fixed head 5 of integrative-structure on above-mentioned lens sleeve 2 exterior side wall, offer 4 adjusting holes, 4 fixed orifices on fixed head 5; Pass fixed orifice and lens bracket is connected by bolt; Pass adjusting hole by bolt and hold out against lens bracket (lens bracket is used for fixed laser camera lens and line-scan digital camera), realize the location between lens sleeve 2 and lens bracket; And by adjusting the degree that holds out against of screw and lens bracket, also capable of regulating is by the line source direction of Bao Weier prism 101 ejaculations.
Claims (8)
1. one kind for the afford redress laser lens of light source of line-scan digital camera, it is characterized in that: comprise front end optical module, lens sleeve, governor motion and fibre-optical splice;
Described governor motion comprises semicylindrical lens, lens holder A, fibre-optical splice contiguous block, regulating sleeve; Wherein, semicylindrical lens is clamped by lens holder A, the coaxial rear, lens sleeve inside that is arranged on; And semicylindrical lens projection one side is towards sleeve rear end; The fibre-optical splice contiguous block is positioned at lens sleeve, and front end and lens holder A are connected, and the regulating sleeve that rear end and thread bush are connected on the lens sleeve lateral wall is connected; The fibre-optical splice contiguous block has the connection optical-fibre channel that connects fibre-optical splice contiguous block rear and front end face; The bright dipping end of fibre-optical splice contiguous block fibre-optical splice is threaded with optical-fibre channel; And make the bright dipping end and the coaxial setting of lens sleeve of fibre-optical splice;
Above-mentioned front end optical module comprises Bao Weier prism and reshaping device; Wherein, reshaping device comprises plano-convex lens and lens holder B, and plano-convex lens is clamped by lens holder B, the coaxial lens sleeve inside of being arranged on; And projection one end of plano-convex lens is towards the lens sleeve front end; The Bao Weier prism is arranged in lens sleeve, and the lens sleeve madial wall is rotationally connected between circumferentially; And be positioned at plano-convex lens the place ahead.
2. a kind ofly as claimed in claim 1 be the afford redress laser lens of light source of line-scan digital camera, it is characterized in that: described fibre-optical splice contiguous block rear end face week upwards is designed with flange, flange is by the regulating sleeve rear end face, and the location-plate that is fixedly connected with regulating sleeve rear end face bolt is fixedly clamped.
3. a kind ofly as claimed in claim 1 be the afford redress laser lens of light source of line-scan digital camera, it is characterized in that: described reshaping device is arranged in the reshaping device sleeve, the reshaping device sleeve is arranged on the place ahead, lens sleeve inside, and by the connecting hole that screw passes on the lens sleeve lateral wall, reshaping device sleeve and lens sleeve is fixed; The Bao Weier prism is fixedly mounted in the prism mounting cylinder, is fixedly connected with between prism mounting cylinder and reshaping device sleeve.
4. a kind ofly as claimed in claim 1 be the afford redress laser lens of light source of line-scan digital camera, it is characterized in that: also be designed with the fixed head of integral mechanism on lens sleeve 2 exterior side wall, have adjusting hole on fixed head, the adjusting hole place also has fixed orifice.
5. a kind ofly as claimed in claim 1 be the afford redress laser lens of light source of line-scan digital camera, it is characterized in that: described optical-fibre channel has enlarged diameter section and reduced diameter section; Fibre-optical splice is threaded with reduced diameter section.
6. a kind ofly as claimed in claim 3 be the afford redress laser lens of light source of line-scan digital camera, it is characterized in that: described enlarged diameter section diameter is not less than the diameter of semicylindrical lens.
7. a kind ofly as claimed in claim 1 be the afford redress laser lens of light source of line-scan digital camera, it is characterized in that: the horizontal range between described plano-convex lens and semicylindrical lens is 40mm-60mm.
8. a kind ofly as claimed in claim 1 be the afford redress laser lens of light source of line-scan digital camera, it is characterized in that: described regulating sleeve front end face is adjustable in distance semicylindrical lens 48mm ~ 68mm scope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220735617 CN202975558U (en) | 2012-12-27 | 2012-12-27 | Laser lens capable of providing compensation light source to line-scan camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220735617 CN202975558U (en) | 2012-12-27 | 2012-12-27 | Laser lens capable of providing compensation light source to line-scan camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202975558U true CN202975558U (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220735617 Expired - Lifetime CN202975558U (en) | 2012-12-27 | 2012-12-27 | Laser lens capable of providing compensation light source to line-scan camera |
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| Country | Link |
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| CN (1) | CN202975558U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103885188A (en) * | 2014-03-26 | 2014-06-25 | 无锡亮源激光技术有限公司 | Laser line light source system capable of achieving uniform illumination |
| 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 |
| CN104793312A (en) * | 2014-01-20 | 2015-07-22 | 无锡亮源激光技术有限公司 | Optical module of optical grating illumination device |
| CN105892066A (en) * | 2016-06-13 | 2016-08-24 | 凌云光技术集团有限责任公司 | Straight line laser generation device |
| CN107795866A (en) * | 2016-08-30 | 2018-03-13 | 日亚化学工业株式会社 | Light-emitting device |
| CN110687687A (en) * | 2019-09-25 | 2020-01-14 | 腾景科技股份有限公司 | Laser facula homogenizing device |
| CN112068282A (en) * | 2020-08-31 | 2020-12-11 | 梅卡曼德（北京）机器人科技有限公司 | Fixing device for linear laser output |
| CN115220168A (en) * | 2022-06-06 | 2022-10-21 | 魅杰光电科技(上海)有限公司 | Photographic detection system and method |
-
2012
- 2012-12-27 CN CN 201220735617 patent/CN202975558U/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104793312A (en) * | 2014-01-20 | 2015-07-22 | 无锡亮源激光技术有限公司 | Optical module of optical grating illumination device |
| CN103885188A (en) * | 2014-03-26 | 2014-06-25 | 无锡亮源激光技术有限公司 | Laser line light source system capable of achieving uniform illumination |
| 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 |
| CN105892066A (en) * | 2016-06-13 | 2016-08-24 | 凌云光技术集团有限责任公司 | Straight line laser generation device |
| CN107795866B (en) * | 2016-08-30 | 2021-02-26 | 日亚化学工业株式会社 | Light emitting device |
| CN107795866A (en) * | 2016-08-30 | 2018-03-13 | 日亚化学工业株式会社 | Light-emitting device |
| CN110687687A (en) * | 2019-09-25 | 2020-01-14 | 腾景科技股份有限公司 | Laser facula homogenizing device |
| CN112068282A (en) * | 2020-08-31 | 2020-12-11 | 梅卡曼德（北京）机器人科技有限公司 | Fixing device for linear laser output |
| CN112068282B (en) * | 2020-08-31 | 2021-07-13 | 梅卡曼德（北京）机器人科技有限公司 | Fixing device for linear laser output |
| CN113126236A (en) * | 2020-08-31 | 2021-07-16 | 梅卡曼德（北京）机器人科技有限公司 | Fixing device for line laser projection and 3D camera |
| CN113126237A (en) * | 2020-08-31 | 2021-07-16 | 梅卡曼德（北京）机器人科技有限公司 | Fixing device for line laser projection and depth camera |
| WO2022041338A1 (en) * | 2020-08-31 | 2022-03-03 | 梅卡曼德（北京）机器人科技有限公司 | Fixing device for line laser output |
| CN113126236B (en) * | 2020-08-31 | 2023-04-25 | 梅卡曼德（北京）机器人科技有限公司 | Fixing device for line laser output and 3D camera |
| US11749958B2 (en) | 2020-08-31 | 2023-09-05 | Mech-Mind Robotics Technologies Ltd. | Fixing device for line laser output |
| CN115220168A (en) * | 2022-06-06 | 2022-10-21 | 魅杰光电科技(上海)有限公司 | Photographic detection system and method |
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Legal Events
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| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |