Lens transmittance detection clamp

Abstract

The utility model relates to the technical field of optical lens processing and detection, and discloses a lens transmittance detection clamp which comprises a supporting seat, a rotating disc and a clamping block used for clamping a lens, a through hole for an external light source to penetrate through is formed in the supporting seat, the rotating disc is rotatably connected in the supporting seat, two guide grooves are formed in the rotating disc in a central symmetry mode, and the clamping block is arranged in the supporting seat. The distance from one end to the other end of the guide groove to the axis of the turntable is gradually increased; the clamping blocks are symmetrically arranged, a guide structure used for limiting the clamping blocks to horizontally move in the horizontal direction is arranged on the supporting base, and the bottom ends of the symmetrically-arranged clamping blocks are embedded into the two guide grooves respectively. According to the lens transmittance detection clamp, the guide grooves which are symmetrically arranged are formed in the rotating disc, the bottom ends of the clamping blocks are embedded into the guide grooves, when the rotating disc is driven to rotate, the clamping blocks can synchronously move in the opposite direction or the reverse direction under the limitation of the guide structures, radial positioning of a lens is formed, clamping and loosening of the lens are facilitated, efficiency is high, and the detection precision is high. And the cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of optical lens processing and detection, and particularly relates to a lens transmittance detection fixture. Background Technique

[0002] For diamond-related products, especially the application of diamond in optical materials, transmittance is an indicator that cannot be ignored. Among them, ultraviolet-visible spectrophotometers are used to study the ultraviolet, visible, and near-infrared transmittance of diamonds and related materials particularly frequently.

[0003] CN217020076U discloses a lens detection fixture, including a base. A flat-bottomed groove is arranged on the upper surface of the base. A rotating gear is arranged at the bottom of the flat-bottomed groove, a first track and a second track which are parallel and located at both ends of the rotating gear, a first slider and a second slider respectively placed on the first track and the second track. First baffles and second baffles are respectively arranged above the opposite ends of the first slider and the second slider; third tracks and fourth tracks are respectively arranged at both ends of the flat-bottomed groove on the upper surface of the base. A third slider and a fourth slider are respectively arranged in the third track and the fourth track. V-shaped concave surfaces are arranged on the opposite sides of the third slider and the fourth slider, and a limiting device for limiting the position of the fourth slider is arranged on the fourth track.

[0004] The lens detection fixture of the above technical solution can fix the positions of the convex or concave surfaces at both ends of the lens, and can stably clamp spherical or aspherical lenses that are unstable when placed on the test platform. However, the third slider and the fourth slider of the above technical solution cannot move synchronously to clamp and fix the lens. It is necessary to first adjust the fourth slider to a suitable position through the cooperation of a square limit bolt and a fourth groove before clamping and fixing operations can be carried out, which is very troublesome and has low efficiency. Content of the Utility Model

[0005] The purpose of the utility model is to provide a lens transmittance detection fixture for solving the problem of low clamping efficiency. The lens transmittance detection fixture of the present utility model is provided with symmetrically arranged guide grooves on the turntable, and the bottom end of the clamping block is embedded in the guide grooves. When the turntable is driven to rotate, the clamping blocks can move synchronously towards or away from each other under the restriction of the guiding structure, forming radial positioning of the lens, which is convenient for clamping and releasing the lens, with high efficiency and low cost.

[0006] To achieve the above purpose, the present utility model provides the following technical solutions:

[0007] A lens transmittance detection fixture, including a support base, a turntable, and a clamping block for clamping a lens. A through hole for an external light source to pass through is provided on the support base. The turntable is rotatably connected in the support base. Two symmetrically arranged guide grooves are provided on the turntable, and the distance from one end of the guide groove to the other end gradually increases with respect to the axis of the turntable;

[0008] The clamping blocks are symmetrically arranged, and a guiding structure for restricting the horizontal translation of the clamping blocks is provided on the supporting seat. The bottom ends of the symmetrically arranged clamping blocks are respectively embedded in two guide grooves;

[0009] When the driving turntable rotates, the clamping blocks can move synchronously towards or away from each other under the restriction of the guiding structure.

[0010] Preferably, the guiding structure is a guide groove, a guide post or guide rods arranged side by side;

[0011] If the guiding structure is a guide groove, the clamping block is embedded in the guide groove and is slidably connected to the guide groove;

[0012] If the guiding structure is a guide post, the guide post is horizontally arranged, one end of the guide post is connected to the clamping block, and the other end is movably penetrated through the supporting seat;

[0013] If the guiding structure is guide rods arranged side by side, the guide rods are connected inside the supporting seat and are horizontally arranged, and the clamping block is slidably connected to the guide rods.

[0014] Preferably, the guiding structure is a guide groove, the guide groove is arranged at the top of the supporting seat, and a through groove communicating with the guide groove is further provided at the top of the supporting seat. The bottom end of the clamping block passes through the through groove and is embedded in the guide groove.

[0015] Preferably, the supporting seat is of a columnar structure, a handle is provided on the side surface of the turntable, and a first through groove for the handle to pass through and swing is provided on the side surface of the supporting seat; in the projection on the horizontal plane, the radian of the first through groove is 30-60°.

[0016] Preferably, a rotatable connecting column is provided at the bottom of the clamping block, the connecting column is the bottom end of the clamping block, the connecting column is embedded in the guide groove, and when the turntable rotates, the connecting column can move along the length direction of the guide groove so that the symmetrically arranged clamping blocks move synchronously towards or away from each other.

[0017] Preferably, an elastic member is further included. Vertical connecting plates are provided on the side surface of the supporting seat, the connecting plates are symmetrically arranged and are matched with the positions of the clamping blocks, one end of the elastic member is connected to the connecting plate, and the other end is connected to the clamping block.

[0018] Preferably, V-shaped grooves are provided on the opposite side surfaces of the clamping blocks.

[0019] Preferably, the guide groove is of an arc-shaped structure or a linear structure.

[0020] Compared with the prior art, the beneficial effects of the present application are:

[0021] This lens transmittance detection fixture forms a radial positioning of the lens by arranging guide grooves symmetrically centered on the turntable, and the bottom end of the clamping block is embedded in the guide grooves. When the turntable is driven to rotate, the clamping blocks can move synchronously towards or away from each other under the restriction of the guiding structure, facilitating the clamping and releasing of the lens, with high efficiency and low cost. Brief Description of the Drawings

[0022] Figure 1 is a perspective view of the lens transmittance detection fixture of Embodiment 1;

[0023] Figure 2 is a top view of the lens transmittance detection fixture of Embodiment 1;

[0024] Figure 3 is a perspective view of the adjustment mechanism of the lens transmittance detection fixture of Embodiment 1;

[0025] Figure 4 is a perspective view of the clamping block of the lens transmittance detection fixture of Embodiment 1;

[0026] Figure 5 is Figure 2 the A-A cross-sectional view of.

[0027] Among them, the reference numerals of each figure are as follows:

[0028] Support base 1; turntable 2; clamping block 3; elastic member 4; through hole 11; guiding structure 12; first through groove 13; second through groove 14; connecting plate 15; guide groove 21; handle 22; connecting column 31; V-shaped groove 32; guiding groove 121. Detailed Description of the Embodiments

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0030] Embodiment 1

[0031] Refer to Figures 1 to 5 , a lens transmittance detection fixture, including a support base 1, a turntable 2, and a clamping block 3 for clamping the lens. A through hole 11 for an external light source to pass through is provided on the support base 1. The turntable 2 is rotatably connected inside the support base 1. Two guide grooves 21 are arranged symmetrically centered on the turntable 2, and the distance from one end of the guide groove 21 to the other end gradually increases with respect to the axis of the turntable 2;

[0032] The clamping blocks 3 are symmetrically arranged. The support base 1 is provided with a guiding structure 12 for restricting the horizontal translation of the clamping blocks 3. The bottom ends of the symmetrically arranged clamping blocks 3 are respectively embedded in two guide grooves 21.

[0033] When the driving turntable 2 rotates, the clamping blocks 3 can move synchronously towards or away from each other under the restriction of the guiding structure 12.

[0034] In this design, an operator can place a square piece between the clamping blocks 3. Of course, it can also be placed on the support base 1. In this embodiment, it is described with the piece placed on the support base 1. Since the movements of the clamping blocks 3 are synchronous, when placing the lens, the axis of the lens can be slightly deviated from the axis of the through hole 11. After the lens is placed, the operator rotates the driving turntable 2 to make the bottom ends of the clamping blocks 3 move along the length direction of the guide grooves 21, so that the symmetrically arranged clamping blocks 3 move towards each other. The clamping block 3 closer to the lens will push the lens towards the other clamping block 3. Finally, the two clamping blocks 3 clamp the lens synchronously. At this time, the axis of the lens and the axis of the through hole 11 are on the same straight line. The operator can move the fixture into the transmittance detection device for transmittance detection. After the detection is completed, the operator can rotate the driving turntable 2 in the reverse direction to make the clamping blocks 3 move away from each other and loosen the clamping to take out the lens.

[0035] It should be noted here that the statement that the axis of the lens can be slightly deviated from the axis of the through hole 11 does not mean that the lens can be placed randomly. When placing the lens, the operator should try to place the lens close to the position of the through hole 11, because the farther the lens is placed from the through hole 11, the farther the moving position of the lens on the support base 1 will be, which will undoubtedly increase the wear of the lens.

[0036] Preferably, the guiding structure 12 is a guiding groove 121, a guiding post (not shown in the figure) or guiding rods arranged side by side (not shown in the figure).

[0037] In a preferred embodiment, the guiding structure 12 can be a guiding groove 121, and the clamping block 3 is embedded in the guiding groove 121 and is slidably connected to the guiding groove 121.

[0038] In a specific embodiment, the guiding structure 12 can be a guiding post. Then the guiding post is horizontally arranged, one end of the guiding post is connected to the clamping block 3, and the other end is movably inserted through the support base 1.

[0039] In other embodiments, the guiding structure 12 can be guiding rods arranged side by side. The guiding rods are connected inside the support base 1 and are horizontally arranged, and the clamping block 3 is slidably connected to the guiding rods.

[0040] All three methods can restrict the horizontal translation of the clamping block 3. The operator can choose one of the three methods according to the actual situation. However, it can be known that the cost of the first method is lower than that of the second and third methods. Therefore, in this embodiment, the first method is selected based on economic considerations.

[0041] Further, the guiding structure 12 is a guiding groove 121. The guiding groove 121 is arranged at the top of the supporting seat 1. A first through groove 13 communicating with the guiding groove 21 is also provided at the top of the supporting seat 1. The bottom end of the clamping block 3 passes through the first through groove 13 and is embedded in the guiding groove 21.

[0042] Preferably, the cross-section of the guiding groove 121 is an inverted T-shaped structure. Therefore, the cross-section of the clamping block 3 is also an inverted T-shaped structure, which can limit the clamping block 3 in the vertical direction and prevent the clamping block 3 from tilting during translation.

[0043] Specifically, the function of the guiding groove 121 is to limit the clamping block 3. Because when the turntable 2 rotates, it will not only make the clamping blocks 3 approach or move away from each other, but also drive the clamping block 3 to rotate due to friction. By slidingly connecting the clamping block 3 in the guiding groove 121, it can be ensured that when the turntable 2 rotates, the clamping block 3 can only reciprocate along the length direction of the guiding groove 121. At the same time, by providing the first through groove 13 communicating with the guiding groove 21, the moving distance of the clamping block 3 can be restricted.

[0044] More preferably, the supporting seat 1 is of a cylindrical structure. A handle 22 is provided on the side surface of the turntable 2. A second through groove 14 for the handle 22 to pass through and swing is provided on the side surface of the supporting seat 1; in the projection on the horizontal plane, the radian of the second through groove 14 is 30 - 60°.

[0045] In actual use, the operator only needs to swing the handle 22 so that the handle 22 moves along the length direction of the second through groove 14; in the optimal implementation mode, when the handle 22 moves to one end of the second through groove 14, it is the position where the two clamping blocks 3 are farthest apart, and when the handle 22 moves to the other end of the second through groove 14, it is the position where the two clamping blocks 3 are closest together.

[0046] In a specific implementation mode, the radian of the second through groove 14 is 45°; in a preferred implementation mode, the radian of the second through groove 14 is 60°; in other implementation modes, the radian of the second through groove 14 is 30°; the handle 22 only needs to swing slightly to clamp and release the lens. Of course, the operator can set the radian outside 30 - 60° according to the actual situation.

[0047] Preferably, a rotatable connecting column 31 is provided at the bottom of the clamping block 3. The connecting column 31 is the bottom end of the clamping block 3, and the connecting column 31 is embedded in the guide groove 21. When the turntable 2 rotates, the connecting column 31 can move along the length direction of the guide groove 21, so that the symmetrically arranged clamping blocks 3 move synchronously towards or away from each other. Specifically, when the turntable 2 rotates, the friction between the connecting column 31 and the guide groove 21 is rolling friction, which can not only reduce wear but also reduce noise during the adjustment process.

[0048] Preferably, an elastic member 4 is further included. A vertically arranged connecting plate 15 is provided on the side surface of the support base 1. The connecting plates 15 are symmetrically arranged and are matched with the positions of the clamping blocks 3. One end of the elastic member 4 is connected to the connecting plate 15, and the other end is connected to the clamping block 3.

[0049] The elastic member 4 in this embodiment can be a spring. It should be noted here that when the distance between the symmetrically arranged clamping blocks 3 is the largest and the smallest, the spring should be in a compressed state. That is to say, when the turntable 2 is not subjected to external force, the force of the spring should be in the direction of pushing the clamping block 3, so as to ensure that when the turntable 2 is not subjected to external force, the spring can ensure that the clamping block 3 clamps the lens.

[0050] Preferably, V-shaped grooves 32 are provided on the opposite sides of the clamping block 3. The V-shaped grooves 32 can match more lenses with different shapes, such as circular, square, etc., making the fixture more versatile.

[0051] In a preferred embodiment, the guide groove 21 is an arc structure; in other embodiments, the guide groove 21 is a linear structure. However, whether it is an arc structure or a linear structure, the width of the guide groove 21 should be greater than the diameter of the connecting column 31 to ensure that the connecting column 31 can move smoothly along the length direction of the guide groove 21.

[0052] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A lens transmittance detection fixture, comprising a support base, a turntable, and a clamping block for clamping a lens. A through hole for an external light source to pass through is provided on the support base, and it is characterized in that, The turntable is rotatably connected within the support base. There are two guide grooves symmetrically arranged on the turntable, and the distance from one end of the guide groove to the other end gradually increases with respect to the axis of the turntable; The clamping blocks are symmetrically arranged. The support base is provided with a guiding structure for restricting the horizontal translation of the clamping blocks. The bottom ends of the symmetrically arranged clamping blocks are respectively embedded in the two guide grooves; When the turntable is driven to rotate, the clamping blocks can move synchronously towards or away from each other under the restriction of the guiding structure.

2. The lens transmittance detection fixture according to claim 1, wherein The guiding structure is a guiding groove, a guiding post, or guiding rods arranged side by side; If the guiding structure is the guiding groove, the clamping block is embedded in the guiding groove and is slidably connected to the guiding groove; If the guiding structure is the guiding post, the guiding post is horizontally arranged. One end of the guiding post is connected to the clamping block, and the other end movably passes through the support base; If the guiding structure is the guiding rods arranged side by side, the guiding rods are connected within the support base and are horizontally arranged, and the clamping block is slidably connected to the guiding rods.

3. The lens transmittance detection fixture according to claim 2, wherein, The guiding structure is the guiding groove. The guiding groove is arranged on the top of the support base. The top of the support base is further provided with a through groove communicating with the guide groove. The bottom end of the clamping block passes through the through groove and is then embedded in the guide groove.

4. The lens transmittance detection fixture according to claim 1, wherein The support base is of a cylindrical structure. A handle is provided on the side surface of the turntable. The side surface of the support base is provided with a first through groove for the handle to pass through and swing. In the projection on the horizontal plane, the radian of the first through groove is 30 - 60°; 5. The lens transmittance detection fixture according to claim 1, wherein The bottom of the clamping block is provided with a rotatable connecting column. The connecting column is the bottom end of the clamping block. The connecting column is embedded in the guide groove. When the turntable rotates, the connecting column can move along the length direction of the guide groove, so that the symmetrically arranged clamping blocks move synchronously towards or away from each other.

6. The lens transmittance detection fixture according to claim 1, wherein It further includes an elastic member. The side surface of the support base is provided with vertically arranged connecting plates. The connecting plates are symmetrically arranged and are in a position matching with the clamping blocks. One end of the elastic member is connected to the connecting plate, and the other end is connected to the clamping block.

7. The lens transmittance detection fixture according to claim 1, wherein The opposite side surfaces of the clamping blocks are provided with V-shaped grooves.

8. The lens transmittance detection fixture according to claim 1, characterized in that, The guide groove is of an arc-shaped structure or a linear structure.

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