Clamp for testing spectrum of lens

Abstract

The utility model provides a lens spectrum test fixture, which comprises a connecting frame, a bearing plate capable of moving back and forth is arranged in the connecting frame, two moving strips capable of approaching each other are connected onto the bearing plate in a sliding manner, and an electric telescopic rod for driving the moving strips is arranged on the bearing plate; the bearing plate is provided with a set of penetrating holes located between the two moving strips, the opposite faces of the two moving strips are each provided with a set of abutting plates capable of moving front and back, and the moving strips are provided with first automatic telescopic rods used for driving the abutting plates. According to the utility model, a group of lenses can be quickly fixed, so that the group of lenses are sequentially subjected to spectrum testing, and the fixing efficiency and the detection efficiency of the lenses are improved.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, and in particular to a fixture for lens spectral testing. Background Technology

[0002] Lens spectral testing is a key method for evaluating the optical performance of a lens by analyzing its transmission, reflection, or absorption characteristics of light at different wavelengths. When performing spectral testing, the lens needs to be fixed on a fixture to prevent it from moving around and to ensure that the lens is perpendicular to the test light.

[0003] For example, Chinese utility model patent application number CN202421280701.0 discloses a spectral testing lens fixture, comprising: a substrate on which a test lens is placed, and a groove formed on the substrate; a positioning part for positioning the test lens, the positioning part including a positioning block that can slide relative to the substrate; and a clamping part for clamping and fixing the test lens, the clamping part including a fixing member, an elastic member, and a clamping member, the fixing member being fixedly mounted on the substrate, the first end of the elastic member being connected to the fixing member, the second end of the elastic member being connected to the clamping member, and the clamping member sliding within the groove. By positioning the test lens through the positioning part and clamping and fixing the lens through the clamping member, the clamping and fixing effect of the test lens is ensured. During testing, ensuring that the substrate and the test light are perpendicular, only the test lens and the substrate need to be in close contact, thereby enabling precise measurement of lenses within a certain size range and thickness.

[0004] Although the above-mentioned clamps can hold and fix lenses of different sizes and thicknesses, the lens fixing process requires manual operation by the staff, which is cumbersome and reduces the efficiency of lens fixing. In addition, only one lens can be fixed for testing at a time, which reduces the testing efficiency. Utility Model Content

[0005] This utility model discloses a fixture for lens spectral testing, which solves the problems of manual lens fixing, cumbersome operation, low fixing efficiency, and the fact that only one lens can be fixed for testing at a time.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A lens spectral testing fixture includes a connecting frame, a support plate that can move back and forth inside the connecting frame, two movable strips that can move closer to each other slidably connected on the support plate, and an electric telescopic rod for driving the movable strips on the support plate; a set of through holes located between the two movable strips are opened on the support plate, and a set of back-and-forth movable abutments are provided on the opposite surfaces of the two movable strips, and a first automatic telescopic rod for driving the abutments is provided on the movable strips.

[0008] Compared with the prior art, the present invention has the following beneficial effects:

[0009] Place the lens on the support plate, aligning the lens's axis with the axis of the perforation. After placing a set of lenses, activate the electric telescopic rod to bring the two moving bars together, securing the sides of the lens. Then, activate the two No. 1 automatic telescopic rods to move the two sets of support plates, securing the front and back sides of the lens set, thus fixing the lens in place. Next, begin spectral testing on the lens. After one lens is tested, move the support plate to the next lens's testing position, and begin testing that lens. This invention allows for rapid fixation of a set of lenses, enabling sequential spectral testing and improving both lens fixation and testing efficiency. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model from a frontal sectional view;

[0011] Figure 2 This is a top view schematic diagram of the novel structure of the load-bearing plate of this utility model.

[0012] In the diagram: 1. Connecting frame; 2. Bearing plate; 21. Moving strip; 22. Electric telescopic rod; 23. Support plate; 24. No. 1 automatic telescopic rod; 25. Moving plate; 26. Fixed rod; 3. Perforation; 4. Support rod; 41. Spring; 42. Connecting block; 43. Trapezoidal block; 44. Limiting rod; 5. Moving ring; 51. No. 2 automatic telescopic rod; 52. Connecting plate; 6. Motor; 61. Lead screw; 62. Connecting rod; 7. Collection frame; 71. Pull rod; 8. Rubber pad; 9. Rubber strip. Detailed Implementation

[0013] The specific content of this utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0014] like Figure 1 and Figure 2 As shown, this utility model provides a fixture for lens spectral testing, including a connecting frame 1. A movable support plate 2 is provided within the connecting frame 1. Two movable strips 21 that can move closer together are slidably connected to the support plate 2. An electric telescopic rod 22 for driving the movable strips 21 is provided on the support plate 2. A set of through holes 3 located between the two movable strips 21 are provided on the supporting plate 2. A set of movable abutments 23 is provided on the opposite surfaces of the two movable strips 21. A first automatic telescopic rod 24 for driving the abutments 23 is provided on each movable strip 21. Depending on the size of the lens, one movable strip 21 can be moved first (to...). Figure 1The orientation shown in the diagram is such that the moving strip 21 on the right side of the support plate 2 is moved to a designated position, and the first automatic telescopic rod 24 on the moving strip 21 drives a set of abutments 23 to move, also moving a set of abutments 23 to a designated position; then a set of lenses are placed on top of a set of perforations 3 on the support plate 2, at which point the right side of the lens contacts the moving strip 21 on the right, and the back of the lens contacts the set of abutments 23 on the moving strip 21, completing the positioning of the lens; then another moving strip 21 is moved toward the perforation 3, which can then hold the left side of the lens, completing the fixation of the lens, and then a set of abutments 23 on the moving strip 21 (the set of abutments 23 on the right moving strip 21 and the set of abutments 23 on the left moving strip 21 are staggered, such as...) Figure 2 As shown in the diagram, a set of abutments 23 can hold the front of the lens in place, securing it from all angles. Spectral testing can then begin. After one lens is tested, the support plate 2 can be moved to test another, improving the efficiency of lens fixation and testing. When fixing smaller lenses, to prevent the two sets of abutments 23 from interfering with the approach of the two moving strips 21, one moving strip 21 can be in contact with the lens while the other remains out of contact. Then, the two sets of abutments 23 can be used to fix the lens. When the lens is too small, one moving strip 21 and its abutment 23 can first contact the lens to position it. Then, the moving strip 21 can be moved away, leaving neither strip in contact with the lens. The lens can then be clamped and fixed using the two sets of abutments 23.

[0015] like Figure 1 and Figure 2As shown, a set of support rods 4 arranged in a ring array are provided inside the perforation 3. A spring 41 located below the bearing plate 2 is fixed on the support rod 4. The other end of the spring 41 is fixed with a connecting block 42 connected to the bottom of the bearing plate 2. A trapezoidal block 43 is fixed at the bottom end of the support rod 4. A limiting rod 44 passing through the connecting block 42 is fixed on the support rod 4. A movable ring 5 covering the set of support rods 4 is provided below the perforation 3. A second automatic telescopic rod 51 is fixed at the bottom of the bearing plate 2. The telescopic end of the second automatic telescopic rod 51 is fixed with a connecting plate 52 connected to the set of movable rings 5. When the lens size is smaller than the inner diameter of the perforation 3, a set of support rods 4 can support the lens, with the top of the support rods 4 flush with the top of the support plate 2. At the same time, after activating the second automatic telescopic rod 51, the connecting plate 52 can drive the moving ring 5 to move downward. The moving ring 5 can then apply pressure to the trapezoidal block 43, causing the set of support rods 4 to stretch the spring 41. The set of support rods 4 then move closer together to support smaller lenses. The limiting rod 44 is slidably connected to the connecting block 42 and is located inside the spring 41, which can increase the stability of the support rods 4 when they move. The part of the set of support rods 4 in a perforation 3 away from the axis of the perforation 3 is connected to the spring 41.

[0016] like Figure 1 As shown, a collection frame 7 is slidably connected to the bottom of the connecting frame 1, and a pull rod 71 is fixed on the collection frame 7. When a lens smaller than the inner diameter of the perforation 3 (after a set of support rods 4 contact the inner wall of the perforation 3, the lens can pass through the inside of the set of support rods 4) is tested, the moving ring 5 can be moved upward, no longer applying pressure to the trapezoidal block 43, allowing the set of support rods 4 to return to its original position. The lens can then fall downward through the set of support rods 4 into the collection frame 7 and be collected. A sponge pad can be placed inside the collection frame 7 to prevent the lens from being broken. Then, the operator can pull the collection frame 7 outward from the connecting frame 1 using the pull rod 71 to facilitate the transfer of the lens. There is no need for the operator to manually unload the lens, which improves the efficiency of placing subsequent lenses. However, when the lens is larger than the inner diameter of the perforation 3, it is still manually unloaded by the operator.

[0017] like Figure 1 and Figure 2 As shown, a motor 6 is fixed on the connecting frame 1, and a lead screw 61 threadedly connected to the support plate 2 is fixed on the rotating shaft of the motor 6. A connecting rod 62 penetrating the support plate 2 is fixed on the inner side of the connecting frame 1. The connecting rod 62 is slidably connected to the support plate 2. The motor 6 is a servo motor. After starting the motor 6 to rotate the lead screw 61, the support plate 2 can be moved forward or backward so that a group of lenses carried on the support plate 2 can be positioned sequentially below the external spectral testing load for sequential testing of the group of lenses.

[0018] like Figure 1 and Figure 2 As shown, the electric telescopic rod 22 is provided in two sets, with the telescopic ends of the two sets of electric telescopic rods 22 respectively connected to the opposite sides of the two moving bars 21; the telescopic end of the first automatic telescopic rod 24 is fixed to a moving plate 25 by a short rod, and a fixed rod 26 connected to a stop plate 23 is fixed on the moving plate 25. The fixed ends of the two sets of electric telescopic rods 22 are respectively fixed on the bearing plate 2, and the two electric telescopic rods 22 can drive the two moving bars 21 to move closer or further apart; after the first automatic telescopic rod 24 is started, the short rod can drive the moving plate 25 to move forward or backward, so that the fixed rod 26 can drive the stop plate 23 to move accordingly.

[0019] like Figure 1 As shown, the side of the abutment 23 that contacts the lens is inlaid with a rubber pad 8, and the side of the moving strip 21 near the perforation 3 is inlaid with a rubber strip 9. The rubber pad 8 and the rubber strip 9 prevent the abutment 23 and the moving strip 21 from directly contacting the lens, increase the friction with the lens, and effectively protect the lens.

[0020] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A fixture for lens spectral testing, comprising a connecting frame, characterized in that: The connecting frame is equipped with a support plate that can move back and forth. Two movable bars that can slide together are slidably connected on the support plate. The support plate is equipped with an electric telescopic rod for driving the movable bars. A set of through holes is opened on the support plate between the two movable bars. A set of abutments that can move back and forth are provided on the opposite surfaces of the two movable bars. An automatic telescopic rod No. 1 for driving the abutments is provided on the movable bars.

2. The lens spectral testing fixture according to claim 1, characterized in that: The perforation contains a set of support rods arranged in a circular array. A spring is fixed to the support rod and located below the support plate. The other end of the spring is fixed to a connecting block connected to the bottom of the support plate. A trapezoidal block is fixed to the bottom of the support rod, and a limiting rod that passes through the connecting block is fixed to the support rod. A movable ring is provided below the perforation to cover the set of support rods. A second automatic telescopic rod is fixed to the bottom of the support plate, and the telescopic end of the second automatic telescopic rod is fixed to a connecting plate connected to the set of movable rings.

3. The lens spectral testing fixture according to claim 1, characterized in that: A collection frame is slidably connected to the bottom of the connecting frame, and a pull rod is fixed on the collection frame.

4. The lens spectral testing fixture according to claim 1, characterized in that: A motor is fixed on the connecting frame, and a lead screw that is threadedly connected to the bearing plate is fixed on the motor shaft. A connecting rod that penetrates the bearing plate is fixed on the inner side of the connecting frame.

5. A fixture for lens spectral testing according to claim 1, characterized in that: The electric telescopic rod is provided in two sets, and the telescopic ends of the two sets of electric telescopic rods are respectively connected to the opposite sides of the two moving bars; the telescopic end of the first automatic telescopic rod is fixed to a moving plate through a short rod, and a fixed rod connected to a stop plate is fixed on the moving plate.

6. A fixture for lens spectral testing according to claim 1, characterized in that: The side of the abutment that contacts the lens is inlaid with a rubber pad, and the side of the movable strip that is close to the perforation is inlaid with a rubber strip.

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