CN221037956U - Light distribution measuring system for lamp - Google Patents
Light distribution measuring system for lamp Download PDFInfo
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- CN221037956U CN221037956U CN202322639162.7U CN202322639162U CN221037956U CN 221037956 U CN221037956 U CN 221037956U CN 202322639162 U CN202322639162 U CN 202322639162U CN 221037956 U CN221037956 U CN 221037956U
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- 238000003384 imaging method Methods 0.000 claims abstract description 19
- 238000005259 measurement Methods 0.000 claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 230000003287 optical effect Effects 0.000 description 7
- 238000012360 testing method Methods 0.000 description 5
- 230000003071 parasitic effect Effects 0.000 description 4
- 238000005286 illumination Methods 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 241001465382 Physalis alkekengi Species 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model provides a light distribution measurement system of a lamp, which comprises a working box, a sample loading platform, an imaging module, a stray light eliminating device and an aiming screen, wherein the working box is provided with a light source; the sample loading platform and the imaging module are both arranged in the working box, a tested light source is placed on the sample loading platform, and a light beam emitted by the tested light source is emitted to the standard screen through a light outlet of the working box; the imaging module is aligned with the sighting screen and is arranged at the position of the sighting screen so as not to block the light rays emitted by the tested light source; the stray light eliminating device is detachably connected with the working box and is arranged outside the light outlet of the working box; the stray light eliminating device comprises a diaphragm component and a shading barrel, and the diaphragm component is arranged in the shading barrel. According to the utility model, the size and the position of the proper diaphragm can be selected and regulated according to the size and the light emitting angle of the light emitting surface of the tested lamp, the influence of stray light is eliminated to the greatest extent, and the accuracy of the light distribution performance measurement result is ensured.
Description
Technical Field
The utility model relates to the field of photoelectric testing, in particular to a light distribution measuring system of a lamp.
Background
Lamps, in particular vehicle lamps, generally have certain requirements for their spatial light distribution, i.e. light distribution. As an illumination and indication tool for automobiles, the illumination distribution of the lamps should be capable of illuminating the road and obstacles in front of the vehicle to the maximum and illuminating the eyes of the driver of the oncoming vehicle to the minimum, and therefore, the lamps should have specific light distribution performance, and the quality of the light distribution performance plays a critical role in safe driving, and is directly related to the property and life safety of people. The related standards at home and abroad all list the light distribution performance of the car lamp as detection items of regulation or mandatory standards, and the related testing devices and testing conditions are correspondingly regulated.
The influence of stray light on the light distribution performance measurement result of the lamp is not negligible, and stray light elimination is a key for obtaining an accurate light distribution measurement result. At present, most of lamp light distribution measuring systems adopt fixed-mounted diaphragms, the aperture is fixed, the fixed-mounted diaphragms cannot be detached, and the fixed-mounted diaphragms cannot be well adapted to the testing requirements of light sources with different sizes and different light emitting angles.
Disclosure of utility model
Aiming at the defects of the prior art, the utility model provides a light distribution measuring system for a lamp, which can select and adjust the size and the position of a proper diaphragm according to the size and the light emitting angle of the light emitting surface of a measured lamp, furthest eliminate the influence of stray light and ensure the accuracy of a light distribution performance measuring result.
In order to achieve the above purpose, the utility model provides a light distribution measuring system of a lamp, which comprises a working box, a sample loading platform, an imaging module, a stray light eliminating device and an aiming screen; the sample loading platform and the imaging module are both arranged in the working box, a tested light source is placed on the sample loading platform, and a light beam emitted by the tested light source is emitted to the standard screen through a light outlet of the working box; the imaging module is aligned with the sighting screen and is arranged at the position of the sighting screen so as not to block the light rays emitted by the tested light source; the stray light eliminating device is connected with the working box in a detachable mode and is arranged at the outer side of a light outlet of the working box, and stray light can be shielded to eliminate the influence of the stray light; the stray light eliminating device comprises a diaphragm component and a shading barrel, and the diaphragm component is arranged in the shading barrel. Typically, the imaging module is disposed near the light source under test.
Further, the working box can be moved. Specifically, the bottom of the working box is provided with two or more wheels which can enable the working box to move, so that the working box is convenient to move and convenient to measure.
Preferably, the bottom of the working box is provided with a driving wheel, and a driving device is arranged inside the driving wheel, so that the working box has the advantages of good driving flexibility, labor saving, high speed, convenience in moving and the like.
Further, the diaphragm assembly comprises two or more diaphragm sheets arranged in parallel, and the diaphragm sheets are provided with light passing holes. Preferably, the center line of the light passing hole of the diaphragm sheet is on a straight line.
Further, the diaphragm component is fixedly arranged in the shading barrel; or the diaphragm assembly can be detached or replaced; or the diaphragm component is provided with an electrically adjustable light passing hole, so that the size of the light passing hole is continuously adjustable, and the measuring of different lamps is convenient to adapt.
Further, the size of the light passing hole of the diaphragm component is larger than the size of the light emitting surface of the measured light source.
Further, the device also comprises a hanging part, and the stray light eliminating device is coupled and connected with the light outlet of the working box through the hanging part.
As a technical scheme, the light outlet outside fixedly connected with mounting panel of work box, be equipped with the draw-in groove on the mounting panel, the one end of shading section of thick bamboo is equipped with the buckle with draw-in groove matched with, the stray light that disappears device pass through draw-in groove and buckle with the work box is connected.
As another technical scheme, the light outlet outside fixedly connected with mounting panel of working box, be equipped with first screw hole on the mounting panel, the one end of eliminating parasitic light device is equipped with the second screw hole, first screw hole and second screw hole aperture and position phase-match, working box and parasitic light device pass through the screw connection.
Further, the outer end of the light outlet of the working box is provided with a sliding table, the sliding table comprises a sliding rail, a sliding block and a sliding table driving device for driving the sliding block to move on the sliding rail, and the diaphragm assembly is detachably arranged on the sliding block and can move on the sliding table.
Furthermore, the working box is also provided with a laser projector which is used for projecting an aiming line to the aiming screen, so as to realize accurate positioning.
Further, the stray light eliminating device comprises a laser two-dimensional positioning device, the laser two-dimensional positioning device outputs two intersecting lasers, a plane formed by the laser two-dimensional positioning device is parallel to the plane where the diaphragm assembly is located, and the center of the diaphragm assembly coincides with the intersection point of the two intersecting lasers. The laser two-dimensional positioning device comprises a longitudinal laser capable of emitting a linear vertical laser line and a horizontal laser capable of emitting a linear horizontal laser line, wherein the longitudinal laser is arranged above or below the center of a light passing hole of the diaphragm assembly, and the linear vertical laser line emitted by the longitudinal laser is positioned in a plane passing through the longitudinal center line of the diaphragm sheet and perpendicular to a horizontal plane; the horizontal laser is arranged on the left side or the right side of the center of the light passing hole of the diaphragm component, the linear horizontal laser line emitted by the horizontal laser is positioned in a plane which passes through the longitudinal center line of the diaphragm sheet and is parallel to the horizontal plane, and the longitudinal center line of the diaphragm sheet is a horizontal line which passes through the center of the light passing hole of the diaphragm sheet and is perpendicular to the collimation screen. The device can determine the center position of the diaphragm assembly, thereby realizing accurate collimation.
Further, one or more movable or detachable optical detectors are arranged on or near the surface of the collimation screen, and the light receiving surface of the optical detector is parallel to the collimation screen. The optical detector can calibrate the imaging module, and accuracy of a measurement result is ensured.
Further, still include display screen and control unit, the display screen sets up on the work box, display screen, imaging module are connected with the control unit electricity respectively, and measuring result passes through the display screen direct display, and is convenient directly perceived.
Further, the device also comprises a driving motor; the sample loading platform is provided with a horizontal and/or rotary shaft, and the rotary shaft is connected with a driving motor. The sample loading platform can be an automatic turntable, and the light distribution measurement requirement of the lamp is met.
The utility model has the beneficial effects that: the utility model provides a light distribution measuring system of a lamp, which can adjust the size and the position of a proper diaphragm according to the size and the light emitting angle of a light source to be measured, furthest eliminate the influence of stray light and ensure the accuracy of a light distribution performance measuring result.
Drawings
FIG. 1 is a schematic diagram of a light distribution measurement system of a lamp according to an embodiment;
The device comprises a working box 1, a collimation screen 2, an imaging module 3, a stray light eliminating device 4, a sample loading platform 5, a measured light source 6, a shading cylinder 7, a diaphragm assembly 8, a laser projector 9, wheels 10, a display screen 11, a control unit 12, a hanging component 13 and an optical detector 14.
Detailed Description
The embodiment discloses a lamps and lanterns grading measurement system, as depicted in fig. 1, including work box 1, loading platform 5, imaging module 3, stray light eliminating device 4, laser projector 9, display screen 11, control unit 12, hang and lean on part 13 and take care of screen 2. The sample loading platform 5, the imaging module 3 and the control unit 12 are arranged in the working box 1, the display screen 11 is arranged on the working box, the display screen 11 and the imaging module 3 are respectively and electrically connected with the control unit 12, and the measurement result is displayed through the display screen 11. The laser projector 9 is arranged outside the working box 1 and is used for projecting an alignment line to the alignment screen 2. The bottom of the work box 1 is provided with two wheels 10 so that the work box 1 can be moved. The sample loading platform 5 is provided with a tested light source 6, and a light beam emitted by the tested light source 6 is emitted to the standard screen 2 through a light outlet of the working box 1. The imaging module 3 is aligned with the collimation screen 2, and is positioned so as not to block the light beam emitted by the tested light source 6, and can be specifically positioned near the tested light source 6. The stray light eliminating device 4 is detachably connected with the working box 1, and particularly can be coupled and connected with a light outlet of the working box 1 through a hanging part 13. The stray light eliminating device 4 comprises a diaphragm assembly 8 and a shading barrel 7, wherein the diaphragm assembly 8 is arranged in the shading barrel 7, and the diaphragm assembly 8 can be detached or replaced to meet measurement requirements of different light sources and eliminate stray light better.
Preferably, a plurality of movable or detachable optical detectors 14 are mounted on or near the surface of the collimation screen 2, and the light receiving surface of the optical detectors 14 is parallel to the collimation screen 2. The optical detector 14 can calibrate the imaging module 3, and ensure the accuracy of the measurement result.
Preferably, the sample loading platform 5 further comprises a driving motor, wherein the driving motor is provided with a horizontal and/or rotary shaft, and the rotary shaft is connected with the driving motor.
Preferably, the light outlet outside fixedly connected with mounting panel of work box 1, be equipped with first screw hole on the mounting panel, the one end of eliminating parasitic light device 4 is equipped with the second screw hole, first screw hole and second screw hole aperture and position phase-match, work box 1 and eliminating parasitic light device 4 pass through the screw connection.
While specific embodiments of the utility model have been described above with reference to the drawings, it will be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the utility model. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.
Claims (10)
1. The light distribution measuring system of the lamp is characterized by comprising a working box (1), a sample loading platform (5), an imaging module (3), a stray light eliminating device (4) and an aiming screen (2); the sample loading platform (5) and the imaging module (3) are arranged in the working box (1), a tested light source (6) is placed on the sample loading platform (5), a light beam emitted by the tested light source (6) is emitted to the sighting screen (2) through a light outlet of the working box (1), and the imaging module (3) is aligned to the sighting screen (2) and is arranged at a position which can not block the light beam emitted by the tested light source (6); the stray light eliminating device (4) is detachably connected with the working box (1) and is arranged outside a light outlet of the working box (1); the stray light eliminating device (4) comprises a diaphragm assembly (8) and a shading barrel (7), wherein the diaphragm assembly (8) is arranged in the shading barrel (7).
2. A light distribution measuring system according to claim 1, characterized in that the bottom of the work box (1) is provided with two or more wheels (10) for moving the work box (1).
3. A light distribution measuring system according to claim 1 or 2, characterized in that the diaphragm assembly (8) comprises two or more diaphragm sheets arranged in parallel, the diaphragm sheets having light passing holes therein.
4. A light distribution measuring system according to claim 1 or 2, characterized in that the diaphragm assembly (8) is fixedly mounted in the shade tube (7); or the diaphragm assembly (8) is detachable or replaceable; or the diaphragm assembly (8) is provided with an electrically adjustable light transmission hole.
5. A light distribution measuring system according to claim 1 or 2, further comprising a hanging component (13), wherein the stray light eliminating device (4) is coupled with the light outlet of the working box (1) through the hanging component (13).
6. The light distribution measurement system of the lamp according to claim 1 or 2, wherein a mounting plate is fixedly connected to the outer side of a light outlet of the working box (1), a clamping groove is formed in the mounting plate, a buckle matched with the clamping groove is arranged at one end of the shading cylinder (7), and the stray light eliminating device (4) is connected with the working box (1) through the clamping groove and the buckle.
7. The light distribution measurement system of a lamp according to claim 1 or 2, wherein a mounting plate is fixedly connected to the outer side of a light outlet of the working box (1), a first threaded hole is formed in the mounting plate, a second threaded hole is formed in one end of the stray light eliminating device (4), the aperture and the position of the first threaded hole are matched with those of the second threaded hole, and the working box (1) and the stray light eliminating device (4) are connected through screws.
8. A luminaire light distribution measuring system as claimed in claim 1 or 2, characterized in that the work box (1) is further provided with a laser projector (9) for projecting a line of sight towards the sight screen (2).
9. The light distribution measurement system of a lamp according to claim 1 or 2, further comprising a display screen (11) and a control unit (12), wherein the display screen (11) is arranged on the working box (1), and the display screen (11) and the imaging module (3) are respectively electrically connected with the control unit (12).
10. A light distribution measurement system according to claim 1 or 2, further comprising a drive motor; the sample loading platform (5) is provided with a horizontal and/or rotary shaft, and the rotary shaft is connected with a driving motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322639162.7U CN221037956U (en) | 2023-09-27 | 2023-09-27 | Light distribution measuring system for lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322639162.7U CN221037956U (en) | 2023-09-27 | 2023-09-27 | Light distribution measuring system for lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221037956U true CN221037956U (en) | 2024-05-28 |
Family
ID=91135428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322639162.7U Active CN221037956U (en) | 2023-09-27 | 2023-09-27 | Light distribution measuring system for lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221037956U (en) |
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2023
- 2023-09-27 CN CN202322639162.7U patent/CN221037956U/en active Active
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