Lens multi-parameter detection device

Abstract

The invention belongs to the field of optical measurement equipment, and particularly relates to a lens multi-parameter detection device which comprises a support body, an optical support is arranged on the support body, an upper mounting panel of the optical support is provided with a first light source and a second light source, and a rear mounting panel is provided with a third light source. A dichroscope inclined by 45 degrees and a first beam splitter are arranged under the first light source, a mounting boss extending forwards is arranged on the lower portion of the support body, a measuring support is arranged on the mounting boss, a lens supporting seat is arranged on the measuring support, a lens to be measured is placed on the lens supporting seat, and a second beam splitter inclined by 45 degrees is arranged under the second light source. And the front mounting panel is provided with a detector. The invention provides an efficient, multifunctional and accurate lens parameter analysis solution, and is suitable for occasions requiring high-precision optical measurement.

Description

Technical Field

[0001] The invention belongs to the field of optical measuring equipment, and in particular relates to a lens multi-parameter detection device. Background Art

[0002] The lens multi-parameter detection device is a complex and professional optical measurement device. This instrument is usually used to accurately measure and analyze the parameters of optical lenses, including but not limited to the lens's diopter, thickness, refractive index, transmittance and other key optical properties. The lens multi-parameter detection device is a highly specialized tool that integrates multiple optical and mechanical technologies to achieve a comprehensive and accurate evaluation of optical lens characteristics. Now, there is an urgent need for an integrated lens parameter analysis device that can realize the analysis of multiple parameters on one analyzer. Summary of the invention

[0003] In order to solve the technical problems existing in the prior art and achieve the above-mentioned purpose, the present invention provides a lens multi-parameter detection device, including a bracket body, on which an optical test component, a pupil distance measurement device and a lens to be tested are arranged, the bracket body is provided with a U-shaped groove, and an optical bracket is arranged in the U-shaped groove, the optical test component includes a spectral emission source, an optical lens component and a detector, the spectral emission source includes a first light source, a second light source and a third light source, the optical lens component includes a reflector, a dichroic mirror, a first light separation mirror, and a second light separation mirror, the optical bracket includes a side mounting plate and a front mounting panel, an upper mounting panel and a rear mounting panel vertically arranged on the side mounting plate, the upper mounting panel is respectively provided with a first light source and a second light source, and the rear mounting panel is provided with a third light source.

[0004] The bracket body is also provided with a first linear slide rail and a second linear slide rail respectively near both sides of the U-shaped groove, a lens pressing bracket is fixedly provided on the first linear slide rail, and a dotting device is provided on the second linear slide rail.

[0005] The pupil distance measuring device includes a pupil distance baffle, a nose pad, a screw gear, a rack shaft, and a guide shaft. The pupil distance baffle is arranged at the front end of a bracket body through the rack shaft and the guide shaft. The screw gear is meshed and installed with the rack shaft to control the forward and backward movement of the pupil distance baffle. The nose pad is hingedly arranged on the pupil distance baffle.

[0006] A dichroic mirror and a first light analyzer are arranged directly below the first light source, and the dichroic mirror and the first light analyzer are arranged relative to each other at angles of 45° downward and 45° upward, respectively; the first light source is arranged directly toward the lens to be tested, a measuring CCD is arranged at the lower end of the lens to be tested, a Hardman diaphragm is arranged between the lens to be tested and the measuring CCD, and an optical axis of the Hardman diaphragm is collinear with the optical axis of the lens to be tested and the center of the photosensitive surface of the measuring CCD; The second light analyzer is set at an oblique angle of 45°, and its reflection surface is aligned with the second light source. The detector is fixed on the front mounting panel, and the transmission surface of the first light analyzer is aligned with the detector. The reflection mirror is movably set at a position of the side mounting plate close to the rear mounting panel through a sliding mounting assembly, and is directly opposite to the detector. The third light source is arranged to be aligned with the transmission surface of the second light separation mirror.

[0007] A mounting boss extending forward is provided at the lower portion of the bracket body, a measuring bracket is provided on the mounting boss, a lens support seat is provided on the measuring bracket, a lens to be measured is placed on the lens support seat, the measuring bracket comprises a mounting ring, an L-shaped mounting frame and a connecting portion, L-shaped mounting frames are provided on both sides of the mounting ring, the two L-shaped mounting frames are connected as a whole through the connecting portion, the connecting portion is fixedly connected to the mounting boss, the mounting ring is used to place the lens support seat, an accommodating space is formed between the mounting ring and the connecting portion, a measuring CCD is provided in the accommodating space, and the measuring CCD extends to the bottom of the lens support seat.

[0008] The sliding installation assembly includes a moving block, a slider, a guide rail, and a screw motor. The guide rail is installed on the side mounting plate, the moving block is fixedly installed on the slider, the slider and the guide rail are slidably installed, the reflector is installed on the moving block, and the screw motor is fixedly installed on the rear mounting panel to drive the moving block to move forward and backward along the guide rail.

[0009] A zero position optical coupler is arranged below the sliding installation assembly, and a compensation zero position piece adapted to the zero position optical coupler is installed at the lower end of the moving block.

[0010] A compensating lens arranged parallel to the first light analyzer is arranged on the optical path between the reflector and the detector.

[0011] The upper mounting panel is provided with a mounting portion extending vertically downward, and the mounting portion is provided with a telephoto lens barrel.

[0012] The nose pad comprises an upper nose pad cover and a lower nose pad cover, and the lower nose pad cover is provided with a magnet.

[0013] The present invention has the following characteristics and beneficial effects: The structure of the present invention realizes high integration of various optical test components, lens positioning, pupil distance simulation and non-contact dotting functions through the combination of modular design and high-precision transmission components.

[0014] Integrated design: By integrating multiple optical test components on a single bracket, including spectral emission source, optical lens components, pupil distance measurement device and detector, one-stop measurement of multiple parameters is achieved. By setting up different optical lens components in a limited space, the length of the optical path is increased, making the measurement accuracy higher, which not only improves the measurement efficiency, but also reduces the space occupied by the equipment.

[0015] Multi-wavelength light source: The device uses three different color emission tubes, green, red and blue, to provide light sources of different wavelengths, making it suitable for a wider range of lens materials and characteristic testing needs.

[0016] Precise optical path control: Precise optical path control is designed. Through the design of the first light analyzer, the second light analyzer and the dichroic mirror, it ensures that light of different wavelengths can be accurately guided to the lens to be tested and finally reach the detector for analysis. This design ensures the accuracy and reliability of the measurement.

[0017] Automated mirror adjustment: The sliding mounting assembly (including moving blocks, sliders, guide rails, and lead screw motors) allows the mirror to automatically move back and forth during the test process. By adjusting the distance, it helps to optimize the optical path and adapt to the testing needs of lenses of different sizes or shapes with a reasonable layout.

[0018] Compensation mechanism: The setting of zero optical coupler and compensation zero plate ensures the precise adjustment of the reflector position, further improving the accuracy of measurement. The compensation lens is set in parallel with the first light analyzer, which can be used to correct errors caused by different factors in the optical path and improve the reliability of measurement data.

[0019] Enhanced measurement capabilities: The measurement CCD located below the mounting ring enables additional measurements of the lens placed on the lens support within the accommodation space, such as surface morphology, expanding the instrument's functional range.

[0020] In summary, the invention has a reasonable structural layout and center of gravity distribution, providing an efficient, multifunctional and accurate lens parameter analysis solution, which is suitable for occasions requiring high-precision optical measurement. It can detect the lens's refractive power, refractive index, thickness, Abbe coefficient and other parameters by switching different light sources. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall housing structure of the present invention; Figure 2 It is a left rear perspective diagram of the internal structure of the present invention; Figure 3 It is a right front stereoscopic schematic diagram of the internal structure of the present invention; Figure 4 for Figure 3 A partial enlarged view; Figure 5 This is a schematic diagram of the structure of the lens pressing bracket of the present invention; Figure 6 It is a schematic diagram of the structure of the dotting device of the present invention; Figure 7 It is a schematic diagram of the internal structure of the present invention; Figure 8 This is a schematic diagram of the structure of the support body of the present invention; Fig. 9 This is a schematic diagram of the structure of the optical bracket of the present invention; Fig.10 It is a schematic diagram of the structure of the measurement support of the present invention; Fig.11 It is a front view of the internal structure of the present invention; Fig.12 for Fig.11 Sectional view at the middle BB; Fig.13 is a schematic diagram of the optical path of the first light source; Fig.14 is a schematic diagram of the optical path of the second light source; Fig.15 Schematic diagram of the optical path of the third light source.

[0022] In the figure: 1-bracket body; 10-U-shaped groove; 11-optical bracket; 110-first mounting hole; 111-second mounting hole; 112-third mounting hole; 113-mounting portion; 114-fourth mounting hole; 115-first card interface; 116-second card interface; 117-first mounting inclined panel; 118-second mounting inclined panel; 119-third mounting inclined panel; 12-mounting boss; 13-LCD control screen; 14-upper front face; 15-lower front face; 16-left shell; 17-right shell; 18-back cover; 21-telephoto lens barrel; 211-lens; 22-detector; 23-first light source; 24-second light source; 25-third light source; 31 -reflector; 311-moving block; 312-slider; 313-guide rail; 314-screw motor; 32-compensating lens; 33-first light-dividing mirror; 34-dichroic mirror; 35-second light-dividing mirror; 41-lens support seat; 42-measuring CCD; 43-measuring bracket; 431-mounting ring; 432-L-type mounting bracket; 433-connecting part; 44-Hardeman aperture; 5-zero position optical coupler; 51-compensating zero position plate; 6-lens to be measured; 71-first linear slide rail; 72-second linear slide rail; 73-lens pressing bracket; 74-dotting device; 81-pupillary distance baffle; 82-nose pad; 83-screwing gear; 84-rack shaft; 85-guide shaft. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] like Figure 1-10 As shown, the lens multi-parameter detection device includes a support body 1, which serves as the basic structure of the entire device and provides mechanical support and stability. The support body 1 is provided with an optical test assembly, the support body 1 is provided with a U-shaped groove 10, and the U-shaped groove 10 is provided with an optical support 11. The optical test assembly includes a spectral emission source, an optical lens assembly and a detector 22. The spectral emission source includes a first light source 23, a second light source 24 and a third light source 25. The optical lens assembly includes a reflector 31, a first light analyzer 33, a dichroic mirror 34, and a second light analyzer 35. The bracket body 1 is also provided with a first linear slide rail 71 and a second linear slide rail 72 on both sides near the U-shaped groove 10. The axes of the two linear slide rails are parallel to the central axis of the U-shaped groove. The axial spacing between the two linear slide rails is designed according to the maximum diameter of the lens. A lens pressing bracket 73 is fixedly provided on the first linear slide rail 71. The lens pressing bracket 73 is used to clamp the lens to be tested. A dotting device 74 is provided on the second linear slide rail 72. The dotting device 74 and the lens pressing bracket 73 form an opposing motion pair. The slide rail position is fed back by an encoder, and the dotting action is triggered synchronously with the detection system. The pupil distance measuring device includes a pupil distance baffle 81, a nose pad 82, a screw gear 83, a rack shaft 84, and a guide shaft 85. The pupil distance baffle 81 is arranged at the front end of the bracket body 1 through the rack shaft 84 and the guide shaft 85. The pupil distance baffle 81 realizes dual-axis guidance through the rack shaft 84 and the guide shaft 85. The screw gear 83 is meshed and installed with the rack shaft 84. The screw gear 83 is rotated to drive the rack shaft 84 to translate, and the bilateral pupil distance baffles 81 are driven to move synchronously toward / backward. The nose pad 82 is hingedly arranged on the pupil distance baffle 81. The nose pad includes a nose pad upper cover 821 and a nose pad lower cover 822. The nose pad lower cover 822 is provided with a magnet. The nose pad 82 adjusts the pitch angle according to the facial features of the user, and the magnet is fixed by magnetic attraction to provide stable support. The pupil distance measurement data is fed back to the dotting device 74, which automatically calculates the optical center offset of the lens and compensates the dotting position. The pupil distance baffle 81 is adjusted to simulate the user's wearing parameters, and the dotting device 74 marks the optical center and the astigmatism axis on the lens. The dotting device performs high-precision marking or positioning to assist in subsequent optical parameter detection and processing control.

[0025] like Fig. 9As shown, the optical bracket 11 includes a side mounting plate and a front mounting panel, an upper mounting panel, and a rear mounting panel vertically arranged on the side mounting plate, the front mounting panel is provided with a first card interface 115, the upper mounting panel is provided with a first mounting hole 110 and a second mounting hole 111, the upper mounting panel is provided with a mounting portion 113 extending vertically downward, the mounting portion is provided with a fourth mounting hole 114, the rear mounting panel is provided with a third mounting hole 112 and a second card interface 116, a first mounting inclined panel 117, a second mounting inclined panel 118, and a third mounting inclined panel 119.

[0026] like Figure 7 , 11 As shown in Figures 12 and 13, the first mounting hole 110 of the upper mounting panel is mounted with the first light source 23, the second mounting hole 111 is mounted with the second light source 24, and the third mounting hole 112 of the rear mounting panel is mounted with the third light source 25. The first light source 23, the second light source 24, and the third light source 25 are used to generate light beams of specific wavelengths to test the performance of lenses under different colors of light. A dichroic mirror 34 and a first light analyzer 33 with an angle of 45° are arranged directly below the first light source 23. The first light source 23 is arranged directly toward the lens 6 to be tested. The first light source 23 passes through the transmission surface of the dichroic mirror 34, the first light analyzer 33, and the lens 6 to be tested to the measurement CCD 42 arranged at the lower end of the Hardman diaphragm 44. The measurement CCD 42 measures the diopter of the lens 6 to be tested. The reflection surface of the dichroic mirror 34 is coated with a beam-reflecting film. The first light source 23 is transmitted through, and the other light sources are reflected. The first light source 23 is a green light source. The lower part of the bracket body 1 is provided with a mounting boss 12 extending forward, and a measuring bracket 43 is provided on the mounting boss 12. The measuring bracket is provided with a lens support seat 41, and the lens 6 to be tested is placed on the lens support seat 41. The lens 6 to be tested is arranged opposite to the first light separation mirror 33, and a second light separation mirror 35 inclined at 45 degrees is arranged directly below the second light source 24. The front mounting panel is provided with a detector 22, which receives the light signals reflected from the lens to be tested by each spectral emission source and converts them into electrical signals for analysis.

[0027] like Fig. 9 , 10 As shown, the measuring bracket 43 includes a mounting ring 431, an L-shaped mounting frame 432 and a connecting portion 433. L-shaped mounting frames 432 are arranged on both sides of the mounting ring 431. The two L-shaped mounting frames 432 are connected as a whole through the connecting portion 433. The connecting portion 433 is fixedly connected to the mounting boss 12. The mounting ring 431 is used to place the lens support seat 41. An accommodating space is formed between the mounting ring 431 and the connecting portion 433. A measuring CCD 42 is arranged in the accommodating space. The measuring CCD 42 extends to the bottom of the lens support seat 41.

[0028] like Fig.14As shown, the second light source 24 is a red light source. The second light source 24 is aligned with the reflective surface of the second dichroic mirror 35 set at an angle of 45 degrees, and then is reflected by the dichroic mirror 34 and is divided into two light paths on the first dichroic mirror 33. One light path passes through the first dichroic mirror 33 and the lens 6 to be tested to the Hardman aperture 44, and then returns to the first dichroic mirror 33 to reflect to the detector 22. The other light path is reflected by the first dichroic mirror 33 to the reflector 31, and then passes through the first dichroic mirror 33 to enter the detector 22 set on the front mounting panel. The detector 22 is directly opposite to the reflector 31 is set, the reflector 31 is set on the side mounting plate near the rear mounting panel through a sliding mounting assembly that moves forward and backward; the sliding mounting assembly includes a moving block 311, a slider 312, a guide rail 313, and a screw motor 314. The guide rail 313 is mounted on the side mounting plate, the moving block 311 is fixedly mounted on the slider 312, the slider 312 is slidably mounted with the guide rail 313, the reflector 31 is mounted on the moving block 311, and the screw motor 314 is fixedly mounted on the rear mounting panel to drive the moving block to move forward and backward along the guide rail 313. Together, they act to adjust the direction and position of the optical path so that the light can accurately reach the predetermined position.

[0029] like Fig.15 As shown, the third light source 25 is a blue light source. The third light source 25 is aligned with the transmission surface of the second dichroic mirror 35, and then is reflected by the dichroic mirror 34 and is divided into two paths of light on the first dichroic mirror 33. One path of light passes through the first dichroic mirror 33 and the lens 6 to be tested to the Hardman aperture 44, and then returns to the first dichroic mirror 33 and is reflected to the detector 22. The other path of light is reflected by the first dichroic mirror 33 to the reflector 31, and then passes through the first dichroic mirror 33 and enters the detector 22 set on the front mounting panel. The second light source 24 and the third light source 25 form an interference signal through the interference of the optical test assembly, and two sets of data are measured by the detector 22, thereby measuring the thickness and Abbe coefficient of the lens, thereby increasing the measurement accuracy.

[0030] like Figure 7 As shown, the upper mounting panel is provided with a mounting portion 113 extending vertically downward, and a telephoto lens barrel 21 is provided on the mounting portion 113. The telephoto lens barrel 21 makes the light beam thinner and improves the measurement accuracy. A compensation lens 32 arranged parallel to the first light analyzer 33 is provided below the telephoto lens barrel 21 to correct aberrations and correct the optical path to improve the imaging quality. A zero position optical coupler 5 is provided below the sliding mounting assembly, and a compensation zero position sheet 51 adapted to the zero position optical coupler 5 is installed at the lower end of the moving block 311. It is used to detect the position information in the system, so that the sliding mounting assembly is returned to the zero position for inspection after the detection is completed.

[0031] like Figure 1As shown, the device is also provided with a liquid crystal control screen 13, an upper front face 14, a lower front face 15, a left shell 16, a right shell 17, and a back cover 18. The upper front face 14 arranged on the outer side of the optical bracket 11 is used to protect the internal components from the external environment and help to maintain the purity of the internal light path.

Claims

1. A lens multi-parameter detection device, comprising a support body, on which an optical test component, a pupil distance measurement device and a lens to be tested (6) are arranged, characterized in that: The support body (1) is provided with a U-shaped groove (10), an optical support (11) is provided in the U-shaped groove (10), the optical test assembly comprises a spectral emission source, an optical lens assembly and a detector (22), the spectral emission source comprises a first light source (23), a second light source (24) and a third light source (25), the optical lens assembly comprises a reflector (31), a first light analyzer (33), a dichroic mirror (34) and a second light analyzer (35), the optical support (11) comprises a side mounting plate and a front mounting panel, an upper mounting panel and a rear mounting panel vertically arranged on the side mounting plate, the upper mounting panel respectively being provided with the first light source (23) and the second light source (24), and the rear mounting panel being provided with the third light source (25); The bracket body (1) is also provided with a first linear slide rail (71) and a second linear slide rail (72) at positions close to both sides of the U-shaped groove (10), the first linear slide rail (71) is fixedly provided with a lens pressing bracket (73), and the second linear slide rail (72) is provided with a dotting device (74); The pupil distance measuring device comprises a pupil distance baffle (81), a nose pad (82), a screw gear (83), a rack shaft (84), and a guide shaft (85); the pupil distance baffle (81) is arranged at the front end of a support body (1) via the rack shaft (84) and the guide shaft (85); the screw gear (83) is meshed with the rack shaft (84) to control the forward and backward movement of the pupil distance baffle (81); and the nose pad (82) is hingedly arranged on the pupil distance baffle (81).

2. The lens multi-parameter detection device according to claim 1, characterized in that: A dichroic mirror (34) and a first light analyzer (33) are arranged directly below the first light source (23); the dichroic mirror (34) and the first light analyzer (33) are arranged relative to each other at angles of 45° downward and 45° upward, respectively; the first light source (23) is arranged directly opposite to the lens to be tested (6); a measuring CCD (42) is arranged at the lower end of the lens to be tested (6); a Hardman diaphragm (44) is arranged between the lens to be tested (6) and the measuring CCD (42); an optical axis of the Hardman diaphragm (44) is collinear with the optical axis of the lens to be tested and the center of the photosensitive surface of the measuring CCD (42); The second light analyzer (35) is arranged at an oblique angle of 45°, and its reflection surface is aligned with the second light source (24); the detector (22) is fixed on the front mounting panel; the transmission surface of the first light analyzer (33) is aligned with the detector (22); the reflection mirror (31) is arranged at a position of the side mounting plate close to the rear mounting panel so as to be movable forward and backward through a sliding mounting assembly, and is arranged directly opposite to the detector (22); The third light source (25) is arranged to be aligned with the transmission surface of the second light analyzing mirror (35).

3. The lens multi-parameter detection device according to claim 2, characterized in that: The lower part of the bracket body (1) is provided with a mounting boss (12) extending forward, a measuring bracket (43) is provided on the mounting boss (12), a lens support seat (41) is provided on the measuring bracket (43), a lens to be measured (6) is placed on the lens support seat (41), the measuring bracket (43) comprises a mounting ring (431), an L-shaped mounting frame (432) and a connecting portion (433), L-shaped mounting frames (432) are provided on both sides of the mounting ring (431), the two L-shaped mounting frames (432) are connected as a whole via the connecting portion (433), the connecting portion (433) is fixedly connected to the mounting boss (12), the mounting ring (431) is used to place the lens support seat (41), an accommodating space is formed between the mounting ring (431) and the connecting portion (433), a measuring CCD (42) is provided in the accommodating space, and the measuring CCD (42) extends to the bottom of the lens support seat (41).

4. The lens multi-parameter detection device according to claim 3, characterized in that: The sliding installation assembly comprises a moving block (311), a slider (312), a guide rail (313), and a lead screw motor (314); the guide rail (313) is installed on the side installation plate; the moving block (311) is fixedly installed on the slider (312); the slider (312) and the guide rail (313) are slidably installed; the reflector (31) is installed on the moving block (311); and the lead screw motor (314) is fixedly installed on the rear installation panel to drive the moving block (311) to move forward and backward along the guide rail (313).

5. The lens multi-parameter detection device according to claim 4, characterized in that: A zero position optical coupler (5) is arranged below the sliding installation component, and a compensation zero position sheet (51) adapted to the zero position optical coupler (5) is installed at the lower end of the moving block (311).

6. The lens multi-parameter detection device according to claim 2, characterized in that: A compensating lens (32) arranged parallel to the first light analyzing mirror (33) is arranged on the optical path between the reflector (31) and the detector (22).

7. The lens multi-parameter detection device according to claim 1, characterized in that: The upper mounting panel is provided with a mounting portion (113) extending vertically downwards, and a telephoto lens barrel (21) is provided on the mounting portion (113).

8. The lens multi-parameter detection device according to claim 1, characterized in that: The nose pad comprises a nose pad upper cover (821) and a nose pad lower cover (822), and the nose pad lower cover (822) is provided with a magnet.

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