Optical non-contact measurement lens support base

Abstract

This utility model provides a lens support base for optical non-contact measurement, including a base, a moving block, and a clamping block. A slide rail is provided on the base, and the moving block is slidably mounted in the base. The clamping block is rotatably connected to the moving block, and a first stepped groove and a second stepped groove are provided on the clamping block. A limiting arc surface is provided on the first stepped groove, and a second limiting surface is provided on the second stepped groove. A driving mechanism is provided in the slide rail, which drives the moving block to move along the slide rail. This utility model can solve the problem that existing positioning mechanisms have poor adaptability to lenses of different sizes and shapes, making it difficult to quickly adjust and fix lenses of different sizes and shapes.

Description

Technical Field

[0001] This utility model relates to the field of optical measurement equipment technology, specifically to a lens support base for non-contact optical measurement. Background Technology

[0002] Non-contact measurement refers to accurate measurement without contact with the object being measured. Non-contact measurement devices for optical lenses are used to measure various parameters of optical lenses. This device can avoid damaging the lens and has a wide range of applications.

[0003] To facilitate accurate measurement of lenses, utility model CN216559629U discloses a non-contact measurement center positioning device for aspherical lenses (hereinafter referred to as Prior Art 1), which includes a base, a measuring instrument, and a positioning block. One end of the base has a through groove, and a threaded post is provided at the center of the through groove. A limit plate is provided inside the through groove, and a threaded disc is provided at the lower end of the limit plate. Positioning rods are provided at the upper end of the limit plate near the four corners. The upper ends of the four sets of positioning rods are connected to the lower ends of the positioning block. The limit plate and the threaded disc are both sleeved on the outside of the threaded post, and the threaded post is threadedly connected to the threaded disc.

[0004] The positioning mechanism of the support base in the prior art 1 can facilitate the positioning and fixing of the lens and prevent the lens from shaking inside the clamping groove; however, the positioning mechanism in the prior art 1 has poor adaptability to lenses of different sizes and shapes, and it is difficult to quickly adjust and fix lenses of different sizes and shapes. Utility Model Content

[0005] The purpose of this invention is to provide a lens support base for optical non-contact measurement, which can solve the problem in the existing technology that the positioning mechanism has poor adaptability to lenses of different sizes and shapes, and it is difficult to quickly adjust and fix lenses of different sizes and shapes.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] An optical non-contact measurement lens support base includes a base, a movable block, and a clamping block. The base is provided with a slide rail, and the movable block is slidably installed in the base.

[0008] The clamping block is rotatably connected to the moving block. The clamping block is provided with a first stepped groove and a second stepped groove. The first stepped groove is provided with a limiting arc surface, and the second stepped groove is provided with a second limiting surface.

[0009] The slide rail is equipped with a driving mechanism, which is used to drive the moving block to move along the slide rail.

[0010] Preferably, the clamping block is provided with a sliding groove, and a limiting part is slidably installed in the sliding groove, and a locking bolt is threadedly connected to the limiting part.

[0011] Preferably, the limiting part has an L-shaped structure.

[0012] Preferably, there are several grooves, which are arranged radially along the clamping block.

[0013] Preferably, the base is provided with a threaded hole, and the slide rail is threadedly connected with a fixing bolt for engaging with the threaded hole.

[0014] Preferably, buffer pads are provided on the limiting arc surface and the second limiting surface.

[0015] Preferably, a support rod is threaded onto the base, and the support rod is coaxially arranged with the base.

[0016] Preferably, the base has a slot.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] In this invention, the clamping block can select either the limiting arc surface or the second limiting surface as the clamping surface according to the type of the lens to be measured (irregular lens with an arc surface or rectangular lens); the driving mechanism first drives a set of symmetrically arranged clamping blocks to clamp the lens to achieve the initial positioning of the lens, and then the second set of symmetrically arranged clamping blocks clamp the lens to ensure that the lens can be in the center position and ensure the accuracy of the measurement.

[0019] Depending on the type of lens to be measured (irregular lens with curved surface or rectangular lens), the limiting curved surface or the second limiting surface is selected as the clamping surface; the driving mechanism first drives a set of symmetrically arranged clamping blocks to clamp the lens, and after the lens is initially positioned, the second set of symmetrically arranged clamping blocks clamp the lens, thereby ensuring that the lens can be in the center position and ensuring the accuracy of the measurement. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a perspective view of the present invention.

[0022] Figure 2 This is a schematic diagram of the structure of this utility model.

[0023] Figure 3 This is a schematic diagram of the drive mechanism in this utility model.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 101-Base, 102-Moving block, 103-Clamping block, 104-Slide rail, 105-First stepped groove, 106-Second stepped groove, 107-Limiting arc surface, 108-Second limiting surface, 109-Drive mechanism, 110-Slide groove, 111-Limiting part, 112-Locking bolt, 113-Fixing bolt, 114-Support rod, 115-Slotted, 116-Double-actuated screw. Detailed Implementation

[0026] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0027] In the description of the embodiments of this utility model, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0030] In this embodiment of the invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] The following disclosure provides many different implementations or examples for different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0032] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0033] See Figures 1-3 This embodiment discloses an optical non-contact measurement lens support base 101, including a base 101, a moving block 102 and a clamping block 103. A slide rail 104 is provided on the base 101, and the moving block 102 is slidably installed in the base 101.

[0034] The clamping block 103 is rotatably connected to the moving block 102. The clamping block 103 is provided with a first stepped groove 105 and a second stepped groove 106. The first stepped groove 105 is provided with a limiting arc surface 107, and the second stepped groove 106 is provided with a second limiting surface 108.

[0035] The slide rail 104 is provided with a drive mechanism 109, which is used to drive the moving block 102 to move along the slide rail 104.

[0036] In this embodiment, there are several slide rails 104, which are installed on the base 101 at equal intervals around the axis of the base 101. The clamping block 103 is slidably connected to the slide rail 104 through the moving block 102. The driving mechanism 109 is disposed in the base 101 and is used to drive the symmetrically arranged clamping blocks 103 to move towards or away from the axis of the base 101; thereby realizing the clamping and releasing of the lens. During the clamping process, depending on the type of lens to be measured—whether it is an irregularly shaped lens with an arc surface or a rectangular lens—either the limiting arc surface 107 or the second limiting surface 108 is selected as the clamping surface. The driving mechanism 109 first drives a set of symmetrically arranged clamping blocks 103 to clamp the lens, achieving initial positioning of the lens. Then, the second set of symmetrically arranged clamping blocks 103 clamps the lens, ensuring that the lens is centered and guaranteeing the accuracy of the measurement. The limiting arc surface 107 on the clamping block 103, located on the first stepped groove 105, is used to clamp irregularly shaped lenses with arc surfaces, such as spectacle lenses, freeform lenses, and irregularly shaped lenses. The second limiting surface 108 on the second stepped groove 106 clamps rectangular lenses of different sizes. The clamping part is rotatably connected to the moving block 102 via a bearing, so that the clamping part can automatically rotate and adjust according to the arc shape and angle of the lens surface after contacting the lens under the drive of the driving mechanism 109. For irregular lenses with curved surfaces, during the clamping process, the limiting curved surface 107 contacts the curved surface of the lens, and the clamping block 103 will adaptively rotate around the connection point with the moving block 102, so that the limiting curved surface 107 can better fit the curved surface of the lens, thereby achieving a more stable and closer clamping, avoiding situations where the lens is not clamped firmly or is damaged due to the irregular shape of the lens. For rectangular lenses, if there is a slight positional deviation during clamping, the adaptive rotation of the clamping block 103 can adjust it to a certain extent, ensuring that the second limiting surface 108 is in close contact with the side of the lens, thus guaranteeing the clamping effect. In this embodiment, there are four slide rails 104, and a T-shaped guide groove is provided in the slide rail 104. The bottom end of the moving block 102 is fixedly connected to a guide block for cooperating with the T-shaped guide groove. The guide groove is used to guide and limit the guide block. The driving mechanism 109 consists of two bidirectional screws 116, which are threadedly connected to the slide rails 104. The guide blocks on the two symmetrically arranged slide rails 104 are threadedly connected to the bidirectional screws 116, so that when the bidirectional screws 116 rotate, they can drive the moving blocks 102, which are slidably mounted on the two symmetrically arranged slide rails 104, to move towards or away from each other to clamp the lens. When clamping the lens, the two bidirectional screws 116 drive two sets of symmetrically arranged clamping blocks to move towards each other in the order of one set in front of the other to clamp the lens in the center.

[0037] In some embodiments, the clamping block 103 is provided with a sliding groove 110, and a limiting part 111 is slidably installed in the sliding groove 110. A locking bolt 112 is threadedly connected to the limiting part 111. In this embodiment, the position of the limiting part 111 can be flexibly adjusted along the sliding groove 110 according to the lens size. For lenses with large size differences, clamping can be achieved by changing the position of the limiting part 111 in the sliding groove 110. Compared with the limiting arc surface 107 with relatively fixed curvature and position, this improves the adaptability adjustment range for lenses with large size variations. When it is necessary to clamp lenses of different sizes, first loosen the locking bolt 112, and slide the limiting part 111 in the sliding groove 110 according to the specific size of the lens so that the position of the limiting part 111 can adapt to the size of the lens. After adjustment, tighten the locking bolt 112 to fix the limiting part 111 in the current position. During the process of the drive mechanism 109 driving the clamping blocks 103 to move towards each other, the symmetrically arranged limiting parts 111 will clamp the lens from both sides or the periphery.

[0038] In some embodiments, the limiting part 111 has an L-shaped structure. In this embodiment, the limiting part 111 with the L-shaped structure can better clamp the lens and prevent the lens from shaking or shifting during the measurement process, thereby ensuring the smooth progress of the measurement work.

[0039] In some embodiments, there are multiple slides 110, which are arranged radially along the clamping block 103. In this embodiment, the multiple slides 110 arranged radially along the clamping block 103 provide more selectable installation positions for the limiting part 111, enabling more precise adaptation to lenses of different sizes. When the lens size varies within a certain range, different slides 110 can be selected or the position can be adjusted within the same slide 110 to make the clamping part 111 fit the lens more closely. Furthermore, when clamping the lens, the radially arranged limiting part 111 can apply force evenly from multiple radial positions, avoiding stress concentration on the lens due to excessive force concentration, ensuring stable force on the lens during clamping, and reducing displacement or deformation caused by uneven force.

[0040] In some embodiments, the base 101 is provided with a threaded hole, and the slide rail 104 is threadedly connected with a fixing bolt 113 for engaging with the threaded hole. In this embodiment, the slide rail 104 is detachably connected to the base 101 by the fixing bolt 113, which facilitates the user to disassemble and replace the slide rail 104 according to actual needs.

[0041] In some embodiments, buffer pads are provided on the limiting arc surface 107 and the second limiting surface 108. In this embodiment, the buffer pads are made of rubber material. Throughout the clamping process, the buffer pads can effectively reduce the impact of the clamping force on the lens and protect the lens from damage.

[0042] In some embodiments, a support rod 114 is threadedly connected to the base 101, and the support rod 114 is coaxially arranged with the base 101. For lenses that are larger or heavier, the support rod 114 can contact the lens and provide initial support before the clamping block 103 clamps the lens, thus preventing the lens from tilting or falling due to its own weight and preventing damage to the lens. By coaxially aligning the support rod 114 with the clamping part, the support rod 114 provides a reference center position for the lens. When placing the lens, the operator can roughly determine the placement center of the lens based on the position of the support rod 114, helping the lens to achieve initial positioning quickly, reducing the time required for subsequent adjustment of the clamping block 103, and improving clamping efficiency. For irregular lenses with curved surfaces, the initial support of the support rod 114 allows the lens to maintain a relatively stable posture, facilitating better contact between the limiting curved surface 107 and the curved surface of the lens. For rectangular lenses, it also prevents them from shifting during initial placement, which is beneficial for precise clamping by the second limiting surface 108, further ensuring the accuracy of centered clamping. In this embodiment, after the user rotates the support rod 114, which is threadedly connected to the base 101, the support height of the support rod 114 can be adjusted according to actual needs.

[0043] In some embodiments, the base 101 is provided with a slot 115. By providing the slot 115 on the base 101, the weight of the base 101 can be reduced, making it easier for users to handle, install, and move.

[0044] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lens support base (101) for optical non-contact measurement, characterized in that: It includes a base (101), a movable block (102) and a clamping block (103). The base (101) is provided with a slide rail (104), and the movable block (102) is slidably installed in the base (101). The clamping block (103) is rotatably connected to the moving block (102). The clamping block (103) is provided with a first stepped groove (105) and a second stepped groove (106). The first stepped groove (105) is provided with a limiting arc surface (107), and the second stepped groove (106) is provided with a second limiting surface (108). The slide rail (104) is provided with a drive mechanism (109), which is used to drive the moving block (102) to move along the slide rail (104).

2. The lens support base (101) for optical non-contact measurement according to claim 1, characterized in that: The clamping block (103) is provided with a sliding groove (110), and a limiting part (111) is slidably installed in the sliding groove (110). A locking bolt (112) is threadedly connected to the limiting part (111).

3. The lens support base (101) for optical non-contact measurements according to claim 2, characterized in that: The limiting part (111) has an L-shaped structure.

4. The lens support base (101) for optical non-contact measurement according to claim 3, characterized in that: There are several slides (110), and several slides (110) are arranged radially along the clamping block (103).

5. The optical non-contact measurement lens support base (101) according to claim 1, characterized in that: The base (101) is provided with a threaded hole, and the slide rail (104) is threaded with a fixing bolt (113) for engaging with the threaded hole.

6. The lens support base (101) for optical non-contact measurement according to claim 2, characterized in that: Buffer pads are provided on the limiting arc surface (107) and the second limiting surface (108).

7. The optical non-contact measurement lens support base (101) according to claim 1, characterized in that: A support rod (114) is threadedly connected to the base (101), and the support rod (114) is coaxially arranged with the base (101).

8. The optical non-contact measurement lens support base (101) according to claim 1, characterized in that: The base (101) is provided with a slot (115).

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