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Portable stray light detection device of center shielding structure

A detection device and stray light technology, applied in the field of optical detection, can solve the problems of low efficiency, poor equipment portability, high cost, etc., and achieve the effect of high efficiency, low cost, and easy portability

Inactive Publication Date: 2014-11-19
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention aims to solve the problems of high cost, poor equipment portability and low efficiency of the optical lens stray light detection method in the prior art

Method used

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  • Portable stray light detection device of center shielding structure

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Embodiment Construction

[0010] The present invention will be further described below in conjunction with accompanying drawing.

[0011] Such as figure 1 As shown, a schematic diagram of a portable central obscuration structure stray light detection device of the present invention, the device is composed of an illumination system 1, a central obscuration 3, a limited long-distance imaging system 4 and a CCD system 5, and each component is placed coaxially; The parallel light emitted by the system 1 is incident on the lens 2 to be inspected, and the light is focused by the lens 2 to be inspected to the central block 3 on the limited long-distance imaging system 4; part of the light is scattered by the scattering points on the surface of the lens 2 to be inspected, and the scattered light Then it is imaged on the CCD system 5 through the limited long-distance imaging system 4 .

[0012] Such as figure 2 As shown, the parallel light emitted by the illumination system 1 is incident on the lens 2 to be ...

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Abstract

The invention discloses a portable stray light detection device of a center shielding structure and belongs to the technical field of optical detection. The portable stray light detection device solves the problem that the optical lens stray light detection method in the prior art is high in cost, poor in equipment portability and low in efficiency. The portable stray light detection device is composed of a lighting system, a center shielder, a limited remote distance imaging system and a charge coupled device (CCD) system, wherein the constituent parts are placed coaxially. Parallel light emitted by the lighting system is irradiated on a lens to be detected and focused on the central shielder of the limited remote distance imaging system through the lens to be detected; and partial light is scattered by scattering points on the surface of the lens to be detected and then imaged on the CCD system through the limited remote distance imaging system after scattering. The portable stray light detection device has the advantages of being low in cost, high in efficiency and convenient to carry.

Description

technical field [0001] The invention relates to a portable central blocking structure stray light detection device, which belongs to the technical field of optical detection. Background technique [0002] At present, in high-precision optical systems, stray light directly affects the performance of the system, and the smoothness of the optical lens, which is an important part of the optical system, has always affected the level of stray light in the system. There is no straightforward solution to the astigmatism detection problem. Usually, the atomic force microscope and other microscopic detection instruments are used for microscopic detection, or the lens is assembled into the lens by integrating sphere and other equipment before system detection. These methods have many disadvantages such as high cost, poor equipment portability and low efficiency. The problem of system stray light has also become a bottleneck for the continued development of high-end optical systems. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/49
Inventor 张红鑫孙明哲卜和阳卢振武
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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