Optical lens unstressed supporting mechanism

Abstract

The utility model relates to the technical field of optical devices, and particularly discloses an optical lens unstressed supporting mechanism which comprises a supporting assembly and a lens arranged on the inner side of the supporting assembly. The supporting assembly comprises a pressing plate, a mirror frame, a base, a fixing plate, a supporting ball and a sealing ring, the pressing plate is fixedly connected to the upper portion of the mirror frame, the mirror frame is fixedly connected to the upper portion of the base, the fixing plate is fixedly connected to the upper portion of the base, and the supporting ball is fixedly connected to the fixing plate; the number of the fixing plates is multiple, and each fixing plate is provided with a plurality of supporting balls. The upper plate surfaces of the plurality of fixing plates are positioned on the same horizontal plane; the upper end faces of the multiple supporting balls are flush and located on the same horizontal plane. According to the utility model, the influence of the supporting mode and the gravity on the surface type of the optical device can be reduced to a great extent, and the requirement of high-precision surface type measurement can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of optical devices, and particularly relates to a stress-free support mechanism for an optical lens. Background Art

[0002] When a large-aperture optical device is in a vertical position, its surface shape will be affected by gravity and the support method, resulting in a change in its surface shape and affecting the accuracy of measurement. Currently, the commonly used support methods include edge support method, parallel flat plate support method, and three-point support method.

[0003] Currently, the following areas for improvement still exist in the prior art: For the edge support method, since only the edge of the lens is supported, the gravity deformation amount in the central area of the lens is extremely large; for the parallel flat plate support method, since the surface shape of the support surface is usually uneven, in fact, the lens is still supported by several random points, and it is difficult to eliminate the support deformation; for the three-point support method, although this method is simple to operate, the support deformation is also large, and it is difficult to meet the requirements of higher-precision surface shape measurement. Summary of the Utility Model

[0004] To solve the above problems existing in the prior art, the utility model provides a stress-free support mechanism for an optical lens, which can greatly reduce the influence of the support method and gravity on the surface shape of the optical device, and can meet the requirements of high-precision surface shape measurement.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A stress-free support mechanism for an optical lens, comprising a support assembly and a lens, wherein the lens is arranged inside the support assembly;

[0007] The support assembly includes a pressing plate, a lens frame, a base, a fixing plate, a support ball, and a sealing ring. The pressing plate is fixedly connected above the lens frame, the lens frame is fixedly connected above the base, the fixing plate is fixedly connected above the base, and the support ball is fixedly connected to the fixing plate.

[0008] Preferably, there are multiple fixing plates, and multiple support balls are arranged on each fixing plate.

[0009] Preferably, the upper plate surfaces of the multiple fixing plates are on the same horizontal plane.

[0010] Preferably, the upper end surfaces of the multiple support balls are flush, and the upper end surfaces of the multiple support balls are on the same horizontal plane.

[0011] Preferably, a groove is arranged inside the lens frame.

[0012] Preferably, the groove of the frame is matched with the sealing ring, and the sealing ring is fixedly connected to the groove of the frame.

[0013] Preferably, both the pressing plate and the frame are circularly arranged, and the pressing plate and the frame have the same diameter.

[0014] Preferably, the base is made of marble.

[0015] The beneficial effects of the present utility model are as follows:

[0016] (1) By providing the support assembly, the technical effect that can be achieved is that the arrangement of the pressing plate and the frame ensures that the lens can be placed in the best position each time. The upper plate surfaces of multiple fixing plates are on the same horizontal plane, and the upper end surfaces of multiple support balls are on the same horizontal plane, ensuring a horizontal support surface and minimizing the deformation of the lens when placed in the device. The sealing ring is fixedly connected to the groove of the frame, facilitating buffering when the lens is placed in the device.

[0017] (2) When using this device and the three-point support mechanism to support the lens, with the lens having a diameter of 320 mm and a thickness of 50 mm, the simulated calculation result of the deformation of this device is 3.679e-06, and the simulated calculation result of the deformation of the three-point support mechanism is 2.464e-05. This device can significantly reduce the support deformation, and this device can obtain more accurate surface shape information of the lens to be measured in the vertical position. Description of the Drawings

[0018] For the convenience of those skilled in the art to understand, the present utility model will be further described below in conjunction with the drawings.

[0019] Figure 1 is a perspective view of the present utility model;

[0020] Figure 2 is a structural schematic diagram of the support assembly in the present utility model;

[0021] Figure 3 is a top view of the support assembly in the present utility model;

[0022] Figure 4 is an exploded view of the present utility model;

[0023] Main Component Symbol Explanation:

[0024] In the figure: 1, pressing plate; 2, frame; 3, base; 4, lens; 5, fixing plate; 6, support ball; 7, sealing ring. Specific Embodiments

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0026] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0027] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "sheathed / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0028] Refer to Figures 1 to 4 , an optical lens stress-free support mechanism disclosed by the present utility model includes a support assembly and a lens 4, and the lens 4 is arranged inside the support assembly;

[0029] The support assembly includes a pressing plate 1, a frame 2, a base 3, a fixing plate 5, a support ball 6 and a sealing ring 7. The pressing plate 1 is fixedly connected above the frame 2, the frame 2 is fixedly connected above the base 3. The arrangements of the pressing plate 1 and the frame 2 ensure that the lens 4 can be placed in the best position each time. The fixing plate 5 is fixedly connected above the base 3, and the support ball 6 is fixedly connected to the fixing plate 5.

[0030] Refer to Figures 2 to 4 , there are multiple fixing plates 5, and multiple support balls 6 are arranged on each fixing plate 5. In this embodiment, there are three fixing plates 5, and three support balls 6 are arranged on each fixing plate 5; the upper plate surfaces of the multiple fixing plates 5 are on the same horizontal plane. In this embodiment, each of the three fixing plates 5 is connected to the base 3 through a universal shaft, so that the three planes are coplanar after the lens 4 is placed; the upper end surfaces of the multiple support balls 6 are flush, and the upper end surfaces of the multiple support balls 6 are on the same horizontal plane, ensuring that the support surface is horizontal and minimizing the deformation amount of the lens 4 when placed in the device.

[0031] Refer to Figures 1 to 4 Figures 1 to 4 , a groove is provided inside the lens frame 2; the groove of the lens frame 2 matches the sealing ring 7, and the sealing ring 7 is fixedly connected to the groove of the lens frame 2, which is convenient for buffering when the lens 4 is placed in the device; both the pressing plate 1 and the lens frame 2 are circularly arranged, and the pressing plate 1 and the lens frame 2 have the same diameter; the base 3 is made of marble material.

[0032] When using this device and the three-point support mechanism to support the lens 4, the diameter of the lens 4 is 320 mm and the thickness is 50 mm. The simulation calculation result of the deformation of this device is 3.679e-06, and the simulation calculation result of the deformation of the three-point support mechanism is 2.464e-05. This device can significantly reduce the support deformation, and this device can obtain more accurate surface shape information of the lens 4 in the vertical position.

[0033] The working principle and usage process of the present utility model: Place the lens 4 in the device, and position and fix the lens 4 through the pressing plate 1 and the lens frame 2, and the sealing ring 7 plays a buffering role.

[0034] The upper plate surfaces of multiple fixing plates 5 are on the same horizontal plane, the upper end surfaces of multiple support balls 6 are flush, and the upper end surfaces of multiple support balls 6 are on the same horizontal plane, ensuring a horizontal support surface to measure the lens 4.

[0035] The above is only a preferred embodiment of the present utility model, and it does not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to be equivalent embodiments with equivalent changes, but as long as it does not depart from the technical content of the present utility model, any brief modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model still belong to the scope of the technical solution of the present utility model.

Claims

1. A stress-free support mechanism for an optical lens, characterized in that: It comprises a support component and a lens (4), wherein the lens (4) is arranged inside the support component; The support assembly comprises a pressing plate (1), a mirror frame (2), a base (3), a fixing plate (5), a supporting ball (6) and a sealing ring (7); the pressing plate (1) is fixedly connected to the top of the mirror frame (2); the mirror frame (2) is fixedly connected to the top of the base (3); the fixing plate (5) is fixedly connected to the top of the base (3); and the supporting ball (6) is fixedly connected to the fixing plate (5).

2. The stress-free support mechanism for an optical lens according to claim 1, characterized in that: A plurality of fixing plates (5) are provided, and a plurality of supporting balls (6) are provided on each fixing plate (5).

3. The stress-free support mechanism for an optical lens according to claim 2, characterized in that: The upper plate surfaces of the plurality of fixing plates (5) are on the same horizontal plane.

4. The stress-free support mechanism for an optical lens according to claim 3, characterized in that: The upper end surfaces of the plurality of support balls (6) are flush, and the upper end surfaces of the plurality of support balls (6) are on the same horizontal plane.

5. The stress-free support mechanism for an optical lens according to claim 1, characterized in that: A groove is provided on the inner side of the mirror frame (2).

6. The stress-free support mechanism for an optical lens according to claim 5, characterized in that: The groove of the mirror frame (2) matches the sealing ring (7), and the sealing ring (7) is fixedly connected to the groove of the mirror frame (2).

7. The stress-free support mechanism for an optical lens according to claim 1, characterized in that: The pressing plate (1) and the mirror frame (2) are both arranged in a circular ring shape, and the pressing plate (1) and the mirror frame (2) have the same diameter.

8. The stress-free support mechanism for an optical lens according to claim 1, characterized in that: The base (3) is made of marble.

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