Laser angle testing light box

Abstract

The invention discloses a laser angle testing light box. The device comprises a case, a first beam splitter prism device and a second beam splitter prism device which are arranged in the case, a first light position detector and a second light position detector which are arranged beside the first beam splitter prism device and the second beam splitter prism device, and a camera which is linearly arranged with the first beam splitter prism device and the second beam splitter prism device, when light penetrates through the first beam splitter prism device and the second beam splitter prism device, the first beam splitter prism device and the second beam splitter prism device can respectively split a beam of light to irradiate the first light position detector and the second light position detector, and the first light position detector and the second light position detector are used for recording falling point coordinate information of the light. And according to the coordinate information of the two points, the incident angle of the light is calculated through an arc tangent function, so that the light angle in the electronic product is rapidly measured, the operation is simple and convenient, and the measurement efficiency is high.

Description

Technical field:

[0001] The present invention relates to the technical field of light angle measurement, and in particular to a laser angle testing light box. Background technology:

[0002] In electronics manufacturing, with the advancement of precision technologies like laser projection and fiber optic communications, angular deviations in laser light paths directly impact product image quality, signal transmission efficiency, and energy consumption. For example, LED displays require color consistency through primary color dominant wavelength errors and viewing angle parameters. Therefore, measuring and calibrating laser light emission angles is a key step in ensuring the performance of optical components.

[0003] Traditional methods for measuring light emission angles rely primarily on mechanical adjustment and the coordination of optical instruments: a multi-degree-of-freedom mechanical platform is used to adjust the horizontal / vertical angle of the laser device, and an electronic autocollimator is used to capture the reflected light offset through a spectroscope system to achieve micron-level angle deviation detection. A laser interferometer is also used to generate a reference beam, and environmental compensation technology is used to correct measurement errors caused by wavelength drift.

[0004] For example, the invention patent publication number TW202422028A in Taiwan provides a chief ray angle measurement technology applicable not only to imaging optical systems but also to non-imaging optical systems. The chief ray angle measurement device comprises: a module support device that supports the optical module; a pinhole device configured to receive the output beam of the optical module and having a pinhole to output the portion of the output beam that passes through the pinhole; and an incident angle measurement device that measures the chief ray angle of the portion of the beam that passes through the pinhole. The optical module is movable relative to the pinhole in a direction perpendicular to its optical axis. The optical module is capable of tilting the optical axis of the incident angle measurement device relative to its optical axis.

[0005] However, in the above patents, the measuring device has a complex structure, high manufacturing cost, cumbersome adjustment and maintenance, high requirements for equipment operation, poor applicability, and cannot meet the current mass production model of electronic products.

[0006] In view of this, the inventors propose the following technical solutions. Summary of the invention:

[0007] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a laser angle testing light box.

[0008] In order to solve the above technical problems, the present invention adopts the following first technical solution:

[0009] A laser angle testing light box includes: a chassis, a first beam splitter prism device and a second beam splitter prism device arranged at intervals in the chassis, a first light position detector and a second light position detector correspondingly arranged beside the first beam splitter prism device and the second beam splitter prism device, and a camera arranged linearly with the first beam splitter prism device and the second beam splitter prism device. When light passes through the first beam splitter prism device and the second beam splitter prism device, the first beam splitter prism device and the second beam splitter prism device will respectively split a beam of light to illuminate the first light position detector and the second light position detector.

[0010] Furthermore, in the above technical solution, the first light position detector includes a first X-axis adjustment module, a first Z-axis adjustment module arranged on the first X-axis adjustment module, a first Y-axis adjustment seat slidably arranged on the first Z-axis adjustment module and capable of adjusting the position along the Y-axis direction, and a coordinate sensing device arranged on the first Y-axis adjustment seat and used to receive and detect the position of light. The second light position detector has the same structure as the first light position detector.

[0011] Furthermore, in the above technical solution, the first X-axis adjustment module and the first Z-axis adjustment module are both precision slides, wherein the first X-axis adjustment module is provided with a first L-vertical plate for installing the first Z-axis adjustment module, and the first Z-axis adjustment module is provided with a second L-vertical plate for installing the first Y-axis adjustment seat, and the first L-vertical plate and the second L-vertical plate are distributed in a centrally symmetrical manner.

[0012] Furthermore, in the above technical solution, the first Y-axis adjustment seat includes a vertical plate portion, a mounting seat installed on the vertical plate portion in a detachable manner and used to support and fix the coordinate sensing device, an adjustment portion extending vertically along the vertical plate portion and used to connect with the second L vertical plate, at least two strip holes arranged on the adjustment portion along the Y-axis direction and a first adjustment bolt for passing through the strip hole and fixing to the second L vertical plate, wherein the adjustment portion and the second L vertical plate are both provided with a slot for allowing the adjustment rod of the first Z-axis adjustment module to extend.

[0013] Furthermore, in the above technical solution, the coordinate sensing device includes a mounting base for fixing to the first Y-axis adjustment seat, a sensor arranged on the mounting base and for receiving light, a translucent lens arranged at the front end of the sensor, a support ring arranged on the mounting base and for supporting the translucent lens, and an adjustment inner ring installed in the support ring and for fixing the translucent lens.

[0014] Furthermore, in the above technical solution, the first beam splitter prism device includes a supporting base, a mounting platform arranged on the supporting base, a positioning seat arranged on the mounting platform, a prism box arranged on the positioning seat, and a prism arranged in the prism box, wherein the prism box is provided with at least three door frames for light to pass through; the second beam splitter prism device has the same structure as the first beam splitter prism device.

[0015] Furthermore, in the above technical solution, the positioning seat is provided with at least two first and second stop blocks which are vertically distributed and used to position the prism box, and the positioning seat is provided with a plurality of first positioning pin holes for installing pin shafts, and the bottom of the prism box is provided with a plurality of second positioning pin holes which can match the first positioning pin holes.

[0016] Furthermore, in the above technical solution, the prism box includes a box body for accommodating a positioning prism, an L-fixing plate arranged in the box body and capable of adjusting and fixing the prism, and a cover plate covering the box body, wherein a plurality of mounting holes are provided on each surface of the outer wall of the box body.

[0017] In order to solve the above technical problems, the present invention adopts the following second technical solution:

[0018] A laser angle testing method includes: a first beam splitter prism device, a second beam splitter prism device, a first light level detector, a second light level detector, and a camera, wherein the first beam splitter prism device, the second beam splitter prism device, and the camera are in a straight line, and the first light level detector and the second light level detector are respectively located on one side of the first beam splitter prism device and the second beam splitter prism device;

[0019] When measuring the angle, the light emitted by the light source passes through the first beam splitter prism device and the second beam splitter prism device and is emitted to the camera;

[0020] When the light passes through the first beam splitter prism device, it is split into two beams by the first beam splitter prism device. One beam keeps the original path and is directly incident on the second beam splitter prism device, while the other beam is directly incident on the first light position detector to obtain the coordinates of point A.

[0021] When the light passes through the second beam splitter prism device, it is split into two beams by the second beam splitter prism device. One beam keeps the original path and is directly projected onto the camera, while the other beam is directly projected onto the second light position detector to obtain the coordinates of point B.

[0022] The angle of incident light is calculated using the formula θ = arctan[ / ].

[0023] Furthermore, in the above technical solution, the first beam splitter prism device and the second beam splitter prism device are spaced 75 mm apart, and the first light position detector and the second light position detector are distributed in a matrix with the first beam splitter prism device and the second beam splitter prism device, wherein the first beam splitter prism device and the second beam splitter prism device split the light into two beams at 45 degrees.

[0024] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art: the present invention adopts a first beam splitter prism device and a second beam splitter prism device that are spaced apart on the path through which the light passes, and respectively sets a first light position detector and a second light position detector on the sides of the first beam splitter prism device and the second beam splitter prism device. While keeping the original path of the light unchanged, a beam of light is respectively separated by the first beam splitter prism device and the second beam splitter prism device and projected onto the first light position detector and the second light position detector. The first light position detector and the second light position detector are used to record the coordinate information of the landing point of the light, and then the incident angle of the light is calculated by the inverse tangent function according to the coordinate information of the two points, thereby realizing rapid measurement of the angle of light in electronic products, simple and convenient operation, and high measurement efficiency. Description of the drawings:

[0025] Figure 1 It is a usage state diagram of the present invention;

[0026] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0027] Figure 3 It is the three-dimensional structure of the first light position detector in the present invention. Figure 1 ;

[0028] Figure 4 It is the three-dimensional structure of the first light position detector in the present invention. Figure 2 ;

[0029] Figure 5 is a three-dimensional diagram of the coordinate sensing device of the present invention;

[0030] Figure 6 is a perspective view of the first beam splitting prism device of the present invention;

[0031] Figure 7 This is a schematic diagram of the structure of the first beam splitter prism device in the present invention. Figure 1 ;

[0032] Figure 8 This is a schematic diagram of the structure of the first beam splitter prism device in the present invention. Figure 2 ;

[0033] Figure 9 It is a structural diagram of the prism box in the present invention;

[0034] Figure 10Schematic diagram of the light path of the present invention. Specific implementation method:

[0035] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0036] See Figures 1 to 10 As shown, a laser angle test light box includes: a chassis 1, a first beam splitter prism device 2 and a second beam splitter prism device 3 arranged at intervals in the chassis 1, a first light position detector 4 and a second light position detector 5 correspondingly arranged beside the first beam splitter prism device 2 and the second beam splitter prism device 3, and a camera 6 arranged linearly with the first beam splitter prism device 2 and the second beam splitter prism device 3. When light passes through the first beam splitter prism device 2 and the second beam splitter prism device 3, the first beam splitter prism device 2 and the second beam splitter prism device 3 will respectively separate a beam of light to illuminate the first light position detector 4 and the second light position detector 5. A first beam splitter prism device 2 and a second beam splitter prism device 3 are arranged at intervals on the path through which the light passes, and a first light position detector 4 and a second light position detector 5 are respectively arranged on the sides of the first beam splitter prism device 2 and the second beam splitter prism device 3. While keeping the original path of the light unchanged, a beam of light is respectively separated by the first beam splitter prism device 2 and the second beam splitter prism device 3 and projected onto the first light position detector 4 and the second light position detector 5. The first light position detector 4 and the second light position detector 5 are used to record the coordinate information of the landing point of the light, and then the incident angle of the light is calculated by the inverse tangent function according to the coordinate information of the two points, thereby realizing rapid measurement of the angle of light in electronic products. The operation is simple and convenient, and the measurement efficiency is high.

[0037] The chassis 1 includes a detachably connected bottom shell 11, a front panel 12, and a top panel 13. The front panel 12 is provided with a light inlet 10 corresponding to the first beam splitter prism 2, and the top panel 13 is provided with an exhaust fan 14. The first beam splitter prism device 2, the second beam splitter prism device 3, the first light level detector 4, and the second light level detector 5 are disposed within the chassis 1 to reduce interference with the first light level detector 4 and the second light level detector 5 by external light.

[0038] The first light detector 4 includes a first X-axis adjustment module 41, a first Z-axis adjustment module 42 mounted on the first X-axis adjustment module 41, a first Y-axis adjustment seat 43 slidably mounted on the first Z-axis adjustment module 42 and capable of adjusting its position along the Y-axis, and a coordinate sensor device 44 mounted on the first Y-axis adjustment seat 43 for receiving and detecting the position of light. The second light detector 5 has the same structure as the first light detector 4. By mounting the coordinate sensor device 44 on the first X-axis adjustment module 41, the first Z-axis adjustment module 42, and the first Y-axis adjustment seat 43, which are capable of fine-tuning in the three X, Y, and Z directions, the coordinate system origins of the first and second light detectors 4 and 5 can be corrected through adjustment in the three X, Y, and Z directions, ensuring that light incident at zero angles is located at the center origin of the first and second light detectors 4 and 5, thereby avoiding measurement deviations caused by deviations in the coordinate system positions of the first and second light detectors 4 and 5. At the same time, through the adjustment in the XYZ directions, a quick calibration can be performed after the test device is moved, thereby avoiding the first light position detector 4 and the second light position detector 5 from having a small displacement that cannot be corrected during the movement.

[0039] The first X-axis adjustment module 41 and the first Z-axis adjustment module 42 are both precision slides, wherein the first X-axis adjustment module 41 is provided with a first L-vertical plate 45 for installing the first Z-axis adjustment module 42, and the first Z-axis adjustment module 42 is provided with a second L-vertical plate 46 for installing the first Y-axis adjustment seat 43, and the first L-vertical plate 45 and the second L-vertical plate 46 are distributed in a centrally symmetrical manner.

[0040] The first Y-axis adjustment seat 43 includes a vertical plate portion 431, a mounting seat 432 installed on the vertical plate portion 431 in a detachable manner and used to support and fix the coordinate sensing device 44, an adjustment portion 433 extending vertically along the vertical plate portion 431 and used to connect with the second L vertical plate 46, at least two strip holes 434 arranged on the adjustment portion 433 along the Y-axis direction, and a first adjustment bolt 435 for passing through the strip hole 434 and fixing to the second L vertical plate 46, wherein the adjustment portion 433 and the second L vertical plate 46 are both provided with a slot 460 for allowing the adjustment rod of the first Z-axis adjustment module 42 to extend out.

[0041] The coordinate sensing device 44 includes a mounting base 441 for fixing to the first Y-axis adjustment seat 43, a sensor 442 arranged on the mounting base 441 and for receiving light, a transparent lens 443 arranged at the front end of the sensor 442, a support ring 444 arranged on the mounting base 441 and for supporting the transparent lens 443, and an adjustment inner ring 445 installed in the support ring 444 and for fixing the transparent lens 443.

[0042] The first beam splitter prism device 2 includes a support base 21, a mounting platform 22 disposed on the support base 21, a positioning base 23 disposed on the mounting base 22, a prism box 24 disposed on the positioning base 23, and a prism 25 disposed within the prism box 24. The prism box 24 is provided with at least three door frames 240 for light to pass through. The second beam splitter prism device 3 has the same structure as the first beam splitter prism device 2. The positioning base 23 is provided with at least two vertically distributed first and second stoppers 231 and 232 for positioning the prism box 24. The positioning base 23 is provided with a plurality of first positioning pin holes 233 for mounting pin shafts. The bottom of the prism box 24 is provided with a plurality of second positioning pin holes 245 that match the first positioning pin holes 233. The prism box 24 includes a housing 241 for accommodating the positioning prism 25, an L-shaped fixing plate 242 disposed within the housing 241 and capable of adjusting and fixing the prism 25, and a cover 243 covering the housing 241. Each surface of the outer wall of the housing 241 is provided with a plurality of mounting holes 244. The prism 25 may include, but is not limited to, a polarizing beam splitter prism, a 45-degree beam splitter prism, or the like, capable of splitting light into two beams at a 90° angle. Depending on the type of prism 25, the user adjusts the angle of the prism 25 so that the split light from the prism 25 is projected onto the camera 6 and the first light level detector 4, respectively.

[0043] In summary, a laser angle testing method includes: a first beam splitter prism device 2, a second beam splitter prism device 3, a first light level detector 4, a second light level detector 5, and a camera 6, wherein the first beam splitter prism device 2, the second beam splitter prism device 3, and the camera 6 are in a straight line, and the first light level detector 4 and the second light level detector 5 are respectively located on one side of the first beam splitter prism device 2 and the second beam splitter prism device 3;

[0044] When measuring the incident angle, the light emitted by the light source A passes through the light inlet 10 of the box 1 and is emitted to the camera 6 along the first beam splitter prism device 2 and the second beam splitter prism device 3;

[0045] When the light passes through the first beam splitter prism device 2, it is split into two beams. One beam keeps the original route and is directly incident on the second beam splitter prism device 3. The other beam is directly incident on the first light position detector 4. The coordinates of point A are obtained. a , Y a ;

[0046] When the light passes through the second beam splitter prism device 3, the light is split into two beams by the second beam splitter prism device 3. One beam keeps the original route and is directly incident on the camera 6, while the other beam is directly incident on the second light position detector 5. The coordinates of point B are obtained. b , Y b ;

[0047] The system then uses the formula θ=arctan[Y b -Y a / X b -X a ]Calculate the angle of incident light;

[0048] When the camera 6 receives light, it indicates that light is emitted from the light inlet 10 of the box 1 by the light source A, and the system starts to calculate the angle according to the coordinate information received by the first light position detector 4 and the second light position detector 5 .

[0049] The first beam splitter prism device 2 and the second beam splitter prism device 3 are spaced 75 mm apart, and the first light level detector 4 and the second light level detector 5 are distributed in a matrix with the first beam splitter prism device 2 and the second beam splitter prism device 3, wherein the first beam splitter prism device 2 and the second beam splitter prism device 3 split the light into two beams at 45 degrees.

[0050] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. Any equivalent changes or modifications made based on the structure, features and principles described in the scope of the patent application of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A laser angle test light box, characterized in that: include: A chassis (1), a first beam splitter prism device (2) and a second beam splitter prism device (3) arranged in an interval arrangement in the chassis (1), a first light position detector (4) and a second light position detector (5) correspondingly arranged beside the first beam splitter prism device (2) and the second beam splitter prism device (3), and a camera (6) arranged linearly with the first beam splitter prism device (2) and the second beam splitter prism device (3); when light passes through the first beam splitter prism device (2) and the second beam splitter prism device (3), the first beam splitter prism device (2) and the second beam splitter prism device (3) will respectively split a beam of light to illuminate the first light position detector (4) and the second light position detector (5).

2. The laser angle test light box according to claim 1, characterized in that: The first light position detector (4) comprises a first X-axis adjustment module (41), a first Z-axis adjustment module (42) arranged on the first X-axis adjustment module (41), a first Y-axis adjustment seat (43) slidably arranged on the first Z-axis adjustment module (42) and capable of adjusting its position along the Y-axis direction, and a coordinate sensing device (44) arranged on the first Y-axis adjustment seat (43) and used for receiving and detecting the position of light. The second light position detector (5) has the same structure as the first light position detector (4).

3. The laser angle test light box according to claim 2, characterized in that: The first X-axis adjustment module (41) and the first Z-axis adjustment module (42) are both precision slides, wherein the first X-axis adjustment module (41) is provided with a first L-shaped vertical plate (45) for mounting the first Z-axis adjustment module (42), and the first Z-axis adjustment module (42) is provided with a second L-shaped vertical plate (46) for mounting the first Y-axis adjustment seat (43), and the first L-shaped vertical plate (45) and the second L-shaped vertical plate (46) are centrally symmetrically distributed.

4. The laser angle test light box according to claim 3, characterized in that: The first Y-axis adjustment seat (43) includes a vertical plate portion (431), a mounting seat (432) mounted on the vertical plate portion (431) in a detachable manner and used to support and fix the coordinate sensing device (44), an adjustment portion (433) extending vertically along the vertical plate portion (431) and used to connect with the second L-shaped vertical plate (46), at least two strip-shaped holes (434) arranged on the adjustment portion (433) along the Y-axis direction, and a first adjustment bolt (435) for passing through the strip-shaped holes (434) and fixing to the second L-shaped vertical plate (46), wherein both the adjustment portion (433) and the second L-shaped vertical plate (46) are provided with a notch (460) for allowing the adjustment rod of the first Z-axis adjustment module (42) to extend.

5. The laser angle test light box according to claim 2, characterized in that: The coordinate sensing device (44) comprises a mounting base (441) for fixing to a first Y-axis adjustment seat (43), a sensor (442) arranged on the mounting base (441) and for receiving light, a light-transmitting lens (443) arranged at the front end of the sensor (442), a supporting collar (444) arranged on the mounting base (441) and for supporting the light-transmitting lens (443), and an adjusting inner ring (445) installed in the supporting collar (444) and for fixing the light-transmitting lens (443).

6. The laser angle test light box according to claim 1, characterized in that: The first beam splitter prism device (2) comprises a supporting base (21), a mounting platform (22) arranged on the supporting base (21), a positioning seat (23) arranged on the mounting platform (22), a prism box (24) arranged on the positioning seat (23), and a prism (25) arranged in the prism box (24), wherein the prism box (24) is provided with at least three door frames (240) for light to pass through; the second beam splitter prism device (3) has the same structure as the first beam splitter prism device (2).

7. The laser angle test light box according to claim 6, characterized in that: The positioning seat (23) is provided with at least two first stoppers (231) and a second stopper (232) which are vertically distributed and used to position the prism box (24), and the positioning seat (23) is provided with a plurality of first positioning pin holes (233) for installing pin shafts, and the bottom of the prism box (24) is provided with a plurality of second positioning pin holes (245) capable of matching the first positioning pin holes (233).

8. The laser angle test light box according to claim 6, characterized in that: The prism box (24) comprises a box body (241) for accommodating a positioning prism (25), an L-shaped fixing plate (242) disposed in the box body (241) and capable of adjusting and fixing the prism (25), and a cover plate (243) covering the box body (241), wherein a plurality of mounting holes (244) are provided on each surface of the outer wall of the box body (241).

9. A laser angle testing method, characterized in that: include: A first beam splitter prism device (2), a second beam splitter prism device (3), a first light position detector (4), a second light position detector (5) and a camera (6), wherein the first beam splitter prism device (2), the second beam splitter prism device (3) and the camera (6) are located in a straight line, and the first light position detector (4) and the second light position detector (5) are located on one side of the first beam splitter prism device (2) and the second beam splitter prism device (3), respectively; When measuring the angle, light emitted from the light source passes through the first beam splitter prism device (2) and the second beam splitter prism device (3) and is directed toward the camera (6); When the light passes through the first beam splitter prism device (2), the light is split into two beams by the first beam splitter prism device (2), one beam maintains the original path and is directly incident on the second beam splitter prism device (3), and the other beam is directly incident on the first light position detector (4), and the coordinates of point A (X a , Y a ); When the light passes through the second beam splitter prism device (3), the light is split into two beams by the second beam splitter prism device (3), one beam keeps the original path and is directly projected onto the camera (6), and the other beam is directly projected onto the second light position detector (5), and the coordinates of point B (X b , Y b ); By the formula θ=arctan[(Y b -Y a ) / (X b -X a )]Calculate the angle of incident light.

10. The laser angle testing method according to claim 9, characterized in that: The first beam splitter prism device (2) and the second beam splitter prism device (3) are spaced 75 mm apart, and the first light position detector (4) and the second light position detector (5) are arranged in a matrix with the first beam splitter prism device (2) and the second beam splitter prism device (3), wherein the first beam splitter prism device (2) and the second beam splitter prism device (3) split the light into two beams at a 45-degree angle.

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