Detection positioning mechanism for curved-surface optical element

Abstract

The utility model relates to the technical field of optical element positioning, in particular to a curved-surface optical element detecting and positioning mechanism, which comprises a concave supporting seat for erecting a curved-surface optical element and a bottom plate fixed below the concave supporting seat, a plurality of springs are vertically fixed on the bottom plate, the springs are limited in a base plate, and the concave supporting seat is fixed on the bottom plate. An elastic needle is fixed to the upper end of the spring, and a fastening plate used for fixing the position of the elastic needle is arranged on the base plate. The device is simple and light in structure, point contact between the elastic needle and the curved surface optical element is achieved through the spring, the position of the elastic needle pressed by the standard curved surface optical element is fixed through the fastening plate, and therefore detection and positioning of the curved surface optical element of the product are achieved, and the application range is wide.

Description

Technical Field

[0001] The utility model relates to the technical field of optical component detection and positioning, and particularly relates to a detection and positioning mechanism for a curved optical component. Background Art

[0002] For curved optical components with inconsistent longitudinal heights, the positioning is difficult and the precision requirement is high. Some curved optical components even require PV < 50μm. The tooling needs to fit the curved surface with high precision so that the self-weight of the product does not affect the precision. For different curved optical components with unfixed corresponding longitudinal heights, a special profiling positioning mechanism needs to be made. The current positioning methods have the following disadvantages: 1. It wastes space and cost, and different curved optical components require special tooling. 2. The precision is low. The support points of the tooling are profiling fixing blocks, and there are differences between the product and the design. As a result, there are differences between the contact points of the tooling and the curved surface and the design, causing positioning deviation and affecting the measurement results. 3. The versatility is poor. Measuring optical components with different curved surfaces requires switching to special tooling. Content of the Utility Model

[0003] The purpose of the utility model is to provide a detection and positioning mechanism for a curved optical component.

[0004] The utility model provides the following technical solution:

[0005] The utility model provides a detection and positioning mechanism for a curved optical component, which includes a concave support seat for mounting the curved optical component and a bottom plate fixed under the concave support seat. A plurality of springs are vertically fixed on the bottom plate, the springs are limited within a substrate, a spring pin is fixed at the upper end of the spring, and a fastening plate for fixing the position of the spring pin is arranged on the substrate.

[0006] Further, stable openings for better mounting the curved optical component are symmetrically arranged on both sides of the concave support seat.

[0007] Further, a plurality of vertical through holes for limiting the position of the spring are arranged in the substrate.

[0008] Further, a plurality of positioning through holes for limiting the spring pin are arranged on the fastening plate, the spring pin penetrates through the positioning through holes, and screw holes are arranged on the concave support seat on one side of the fastening plate.

[0009] Further, the bottom plate and the substrate are fixed by screws.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: The structure of the utility model is simple and light. The spring is used to realize the point contact between the spring pin and the curved optical component, and the position of the spring pin pressed by the standard curved optical component is fixed through the fastening plate, so as to realize the detection and positioning of the product curved optical component, and it has a wide application range. Description of the Drawings

[0011] Figure 1 This is a schematic cross-sectional view of the practical application of the present utility model.

[0012] Figure 2 This is a schematic explosion structure view of the present utility model.

[0013] In the figure, 00 - standard curved optical element; 1 - concave support base; 2 - bottom plate; 3 - spring; 4 - substrate; 5 - spring pin; 6 - fastening plate; 7 - stable opening; 8 - vertical through hole; 9 - positioning through hole; 10 - screw hole; 11 - screw; 12 - fastening screw. Specific embodiments

[0014] The following will further describe the present utility model in conjunction with the appended Figure 1 and appended Figure 2 drawings.

[0015] In an embodiment of the present utility model, a curved optical element detection and positioning mechanism includes a concave support base 1 for mounting a curved optical element and a bottom plate 2 fixed under the concave support base 1. A plurality of springs 3 are vertically fixed on the bottom plate 2. The springs 3 are limited within the substrate 4. The upper end of the spring 3 is fixed with a spring pin 5. A fastening plate 6 for fixing the position of the spring pin 3 is provided on the substrate 4. The standard curved optical element 00 is placed on the concave support base 1. The standard curved optical element 00 presses down the spring pin 5, and the spring 3 is compressed. The fastening plate 6 fixes the pressed spring pin 5 to realize the fixation of the position of the spring pin 5.

[0016] In an embodiment of the present utility model, stable openings 7 for better mounting the curved optical element are symmetrically opened on both sides of the concave support base 1.

[0017] In an embodiment of the present utility model, a plurality of vertical through holes 8 for restricting the position of the spring 3 are opened in the substrate 4 to ensure that the spring 3 moves in the vertical direction.

[0018] In an embodiment of the present utility model, a plurality of positioning through holes 9 for limiting the spring pin 5 are opened on the fastening plate 6. The spring pin 5 passes through the positioning through holes 9. A screw hole 10 is opened on the concave support base 1 on one side of the fastening plate 6. By passing the fastening screw 12 through the screw hole 10 and pushing the fastening plate 6 until the positioning through holes 9 tightly abut against the spring pin 5, the fixation of the spring pin 5 is realized.

[0019] In an embodiment of the present utility model, the bottom plate 2 and the substrate 4 are fixed by screws 10 to prevent the substrate 4 from shifting on the bottom plate 2.

[0020] In practical applications, the standard curved optical element 00 is placed on the concave support base 1. The standard curved optical element 00 presses down the spring pin 5, compressing the spring 3. The fastening screw 12 is used to push the fastening plate 6 until the positioning through hole 9 tightly abuts against the spring pin 5, thus fixing the spring pin 5. After the spring pin 5 is fixed, the standard curved optical element 00 is removed and the product is placed. Later, the three-dimensional scanning measuring instrument is used to observe the conformity between the product and the positioned spring pin 5, so as to realize the measurement of the curved optical element. When other curved surface products need to be measured, loosen the fastening screw 12 to reset the spring. After resetting, place the standard optical element of other curved surface products on the concave support base 1, and use the fastening screw 12 to push the fastening plate 6 until the positioning through hole tightly abuts against the spring pin 5 to realize the positioning of the spring pin 5, completing the positioning of the standard optical element of another curved surface.

[0021] The embodiments of the present utility model are given for the purposes of illustration and description. Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A detection and positioning mechanism for a curved optical component, characterized in that: It includes a concave support base for mounting a curved optical element and a bottom plate fixed under the concave support base. A plurality of springs are vertically fixed on the bottom plate, and the springs are limited within a substrate. A spring pin is fixed to the upper end of the spring, and a fastening plate for fixing the position of the spring pin is provided on the substrate.

2. The detection and positioning mechanism for a curved optical component according to claim 1, wherein: Stable openings for better mounting the curved optical element are symmetrically formed on both sides of the concave support base.

3. The detection and positioning mechanism for a curved optical component according to claim 1, wherein: A plurality of vertical through holes for restricting the position of the spring are formed in the substrate.

4. A surface optical component detection and positioning mechanism according to claim 1, wherein: A plurality of positioning through holes for limiting the spring pin are formed on the fastening plate. The spring pin passes through the positioning through holes, and screw holes are formed on the concave support base on one side of the fastening plate.

5. The detection and positioning mechanism for a curved optical component according to claim 1, characterized in that: The bottom plate and the substrate are fixed by screws.

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