Coronagraph objective lens scattering stray light detection device and detection method

A detection device and stray light technology, applied in the direction of measurement device, optical instrument test, machine/structural component test, etc., can solve the problems of complex detection process, increase detection cost, and high comprehensive index, avoid detection errors and reduce requirements , the effect of fast detection

Active Publication Date: 2020-06-05
SHANDONG UNIV +1
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  • Abstract
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  • Claims
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Problems solved by technology

Therefore, although the above methods can be used to detect the scratches, pits and surface roughness of the objective lens in accordance with the corresponding indicators, but

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  • Coronagraph objective lens scattering stray light detection device and detection method
  • Coronagraph objective lens scattering stray light detection device and detection method
  • Coronagraph objective lens scattering stray light detection device and detection method

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Embodiment Construction

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0031]It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). Relative positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly.

[0032] In addition, the descriptions involving "first", "second" and so on in the present invention are only for descriptive purposes, and should not be understood as indicating or implying their relative importance or implicitly indicating the q...

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Abstract

The invention discloses a coronagraph objective lens scattering stray light detection device and a detection method. The detection device comprises a light source, a detection module and a detector. An adjustable diaphragm I, a stray light eliminating diaphragm set, a field lens assembly and an imaging lens assembly are sequentially installed in the light path direction. A to-be-detected lens is arranged between the adjustable diaphragm I and the stray light eliminating diaphragm group and is close to the adjustable diaphragm I. Through the adjustable diaphragm I, the stray light eliminating diaphragm group, the field lens assembly and the imaging lens assembly, stray light beams in the lens barrel are shielded to the greatest extent. Compared with the prior art, the detection device adopting the scheme has the advantages that a direct imaging and direct detection mode is adopted, the detection process is convenient, the detection result is more visual, and the detection complexity anddifficulty are greatly reduced.

Description

technical field [0001] The invention relates to the technical field of coronagraph objective lens detection, in particular to a detection device and method for detecting stray light scattered by a coronagraph objective lens using the ghost image principle. Background technique [0002] A coronagraph is a device that obscures the sun to observe the corona. Because the objective lens of the coronagraph is directly irradiated by the sun, the requirements for smoothness and defects on the surface of the objective lens are very high, and because the surface processing level of the objective lens does not meet the requirements, damage, scratches, etc., and packaging residues are caused during transportation. Adhesion to the surface of the objective lens and other reasons may reduce the cleanliness of the objective lens surface, which will cause great interference to coronal observation. Therefore, technicians need to clean the coronagraph objective lens regularly to control the a...

Claims

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Application Information

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IPC IPC(8): G01M11/02
CPCG01M11/0278
Inventor 孙明哲张红鑫夏利东刘维新刘大洋
Owner SHANDONG UNIV
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