Optical lens center thickness measurement and positioning clamp

A technology for positioning fixtures and optical lenses, used in measuring devices, using optical devices, mechanical measuring devices, etc., can solve the problems of reduced measurement accuracy, easy shaking or deviation of optical lenses, and inability to achieve measurement accuracy. High, achieve repeat positioning, improve the effect of measurement accuracy

Pending Publication Date: 2020-12-04
冯志镖
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AI Technical Summary

Problems solved by technology

Due to the variety of end faces of optical lenses, most of which are biconvex, biconcave, crescent surface and plane, during the measurement process, the optical lens is prone to shake or misalignment, so that the center position of the optical lens cannot be in the same position as the beam of the measuring instrument. On the straight line, the measurement accuracy is greatly reduced and cannot meet the above measurement accuracy requirements

Method used

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  • Optical lens center thickness measurement and positioning clamp
  • Optical lens center thickness measurement and positioning clamp
  • Optical lens center thickness measurement and positioning clamp

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Embodiment Construction

[0033] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to the implementation cases and accompanying drawings. The present invention can be implemented in the following ways:

[0034] refer to Figure 1-8 , an optical lens center thickness measurement and positioning fixture, including an elastic positioning fixture 1, an elastic sheet 2 and a gas source cavity 3 arranged in sequence from top to bottom, the gas source cavity 3 is an air pressure cavity inside, and the gas source cavity 3 is Made of metal material. The top of the gas source cavity 3 is provided with an upper opening, and the elastic sheet 2 can detachably seal the upper opening; the gas source cavity 3 is also provided with an inlet for gas to enter or discharge the gas source cavity. Air exhaust hole 32 . The elastic positioning fixture 1 is provided with a petal-shaped elastic chuck 11 , and a column 12 is arranged...

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Abstract

The invention relates to an optical lens center thickness measurement and positioning clamp, which comprises an elastic positioning clamp, an elastic sheet and an air source cavity which are sequentially arranged from top to bottom, wherein a petal-type elastic chuck is arranged on the elastic positioning clamp; and an air source enters the air source cavity to enable the elastic piece to deform or reset so as to control the elastic chuck of the elastic positioning clamp to be opened or clamped. According to the optical lens center thickness measurement and positioning clamp, the elastic positioning clamp arranged on the air source cavity is used for fixing an optical lens, and the air source enters the air source cavity to enable the elastic sheet to deform or reset, so that the elastic chuck of the elastic positioning clamp is controlled to be opened or clamped; and the functions of putting in, clamping, fixing and taking out the optical lens are realized.

Description

technical field [0001] The invention relates to the technical field of positioning fixtures, in particular to a measuring positioning fixture for measuring the central thickness of an optical lens. Background technique [0002] In the field of optics, the three basic parameters of optical lenses are center thickness, refractive index and curvature radius, among which the error of center thickness processing of optical lens is an important factor affecting the imaging of optical system. For example, in aviation, aerospace and other high-precision optical system products, there are strict requirements on the tolerance of optical lenses. The optical axis declination, radial offset and axial clearance of optical lenses need to be determined according to the center thickness of the optical lenses in the lens. Precise calculation; therefore, optical lens center thickness measurement is an important parameter. [0003] At present, the detection of the center thickness of optical l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/06B25B11/00
CPCB25B11/00G01B5/0002G01B11/06
Inventor 冯志镖
Owner 冯志镖
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