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Method for detecting adhesion between spatial heterodyne interferometer gratings

A technology of spatial heterodyne and detection method, applied in the field of optical instruments, can solve the problem that the inclination angle of the two-arm grating is difficult to accurately control, and achieve the effects of convenient adjustment and calibration of optical path, reduction of interpretation error and improvement of accuracy.

Inactive Publication Date: 2010-06-30
ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for gluing the grating of a spatial heterodyne interferometer to solve the problem in the prior art that the inclination angle of the two arms of the spatial heterodyne interferometer is difficult to accurately control

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  • Method for detecting adhesion between spatial heterodyne interferometer gratings
  • Method for detecting adhesion between spatial heterodyne interferometer gratings
  • Method for detecting adhesion between spatial heterodyne interferometer gratings

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Embodiment Construction

[0039] A glue detection method for a spatial heterodyne interferometer grating, such as figure 1 As shown, the gratings 40A and 40B at the two arm ends of the spatial heterodyne interferometer 4 to be glued are placed on a transparent platform 40C, the optical axis of the grating 40A at one arm end of the spatial heterodyne interferometer 4 is in the horizontal direction, and the other arm end The optical axis of the grating 40B is the vertical direction, the transparent platform 40C is an L-shaped platform, and the optical axis of the spatial heterodyne interferometer is the grating 40A at the end of the arm of the horizontal direction. The grating 40B at the end of the arm in the straight direction leans against the side wall of the L-shaped transparent platform. The inclination angle of the grating at the two ends of the spatial heterodyne interferometer is adjustable. It is equipped with a laser 1, an integrating sphere 2, and a collimation system 3. The laser 1 is aligned ...

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Abstract

The invention discloses a method for detecting adhesion between spatial heterodyne interferometer gratings, which relates to the field of optical instruments. The method comprises the steps that: a heterodyne interferometer to be adhered is vertically placed on a transparent platform of an adhesion regulation mechanism; laser lights output by a laser are subjected to diffuse reflection of an integrating sphere to form a uniform surface light source and are incident to an alignment system to form parallel lights which are incident on the heterodyne interferometer to be adhered; interference fringes are formed on an exit end of the heterodyne interferometer to be adhered, wherein the interference fringes are received by a CCD after passing through an image system and are displayed on a computer in real time; fx interference fringes formed on the whole image surface width w1 of the CCD by a special wavelength light source lambda 0 after the special wavelength light source lambda 0 passes through an interference system are calculated; a photosensitive adhesive is uniformly coated on the heterodyne interferometer to be adhered, micro-adjustment is performed on oblique angles of alpha and beta of two arm gratings, and the interference fringes on the whole image surface of the CCD are read till f changes to fx to enable the two gratings to be positioned; and two adhered gratings are cured. The method for detecting adhesion between the spatial heterodyne interferometer gratings solves the technical problem of difficult accurate control over the grating oblique angle in the adhesion process of the spatial heterodyne interferometer. The error of the oblique angels of the two arm gratings can be controlled in 2.5 seconds.

Description

technical field [0001] The invention relates to the field of optical instruments, in particular to a gluing detection method for spatial heterodyne interferometer gratings. Background technique [0002] The spatial heterodyne spectrometer can obtain extremely high spectral resolution within a narrow spectral bandwidth, and the interferometer is the core component of the spatial heterodyne spectrometer. The asymmetry of the inclination angles of the two-arm gratings in the spatial heterodyne interferometer is caused by the angle manufacturing errors of the front prisms, optical inhomogeneity and so on. [0003] Since the inclination angle of the two-arm grating of the spatial heterodyne interferometer directly determines the spectral range Δλ and spectral resolution δλ of the interferometer, when the inclination angle of the two-arm grating is not at the theoretically calculated value during the gluing process, the interferometer will be lost to a certain extent. The spectra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/02
Inventor 熊伟施海亮罗海燕李大成吴军方勇华
Owner ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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