A four-part phase stepping mirror and its manufacturing method

A technology of phase stepping and mirrors, which is applied in the field of optical components, can solve the problem of uneven surface height of the four-part film, and achieve the effects of less difficulty in evaporation, improved reflectivity, and instrument calibration

Active Publication Date: 2019-05-24
XI AN JIAOTONG UNIV
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Problems solved by technology

[0004] The object of the present invention is to overcome the above-mentioned shortcoming of the prior art, and provide a kind of four-part phase stepping reflector and its manufacturing method. The surface realizes the four-part reflection phase stepping function, thus solving the problem of uneven surface of the four-partition film layer in the existing scheme, and has the advantages of high reflectivity, high phase stepping accuracy, etc., and can be well applied to static wind imaging interferometry instrument for atmospheric remote sensing

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  • A four-part phase stepping mirror and its manufacturing method
  • A four-part phase stepping mirror and its manufacturing method
  • A four-part phase stepping mirror and its manufacturing method

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Embodiment Construction

[0026] The present invention first proposes a phase stepping mirror with four divisions: a glass substrate 21 with a flat rear surface, a composite film layer 22 is coated on the rear surface of the glass substrate 21, and the glass substrate 21 is divided into A, B, C, D Four regions of equal area. The surface on which light is incident on the glass substrate 21 is the front surface, and the surface from which light is emitted is the rear surface. The composite film layer 22 has 9 layers in total, the first layer is a step phase modulation layer, the second to seventh layers are reflection enhancing layers, the eighth layer is a reflection layer, and the ninth layer is a protective layer. The first film material is MgF 2 , the second film material is TiO 2 ; The third layer of membrane material is MgF 2 ; The fourth film material is TiO 2 ; The fifth layer of film material is MgF 2 ; The sixth film material is TiO 2 ; The seventh layer of membrane material is MgF 2 ; T...

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Abstract

The invention discloses a four-section phase stepping reflector and a manufacturing method. The method comprises the steps: employing a reverse film system design method; coating the rear surface of a glass substrate; and achieving a four-section reflection phase stepping function on the front surface of the glass substrate, thereby solving a problem that the surface of a four-section film layer in a conventional scheme is not flat. The reflector is high in reflectivity, and is high in phase stepping precision. The reflector can be used in a static wind imaging interferometer for remote sensing detection of the atmosphere.

Description

technical field [0001] The invention belongs to the technical field of optical components, and relates to a stepping reflector, in particular to a four-section phase stepping reflector and a manufacturing method. Background technique [0002] In atmospheric remote sensing detection, wind field speed and atmospheric temperature have always been the key parameters of scientific observation. The detection of wind speed, temperature and pressure in the upper atmosphere has important applications in the fields of atmospheric behavior research, geophysics, aerospace and high-precision weather forecasting. At present, passive remote sensing detection has become a hot research direction in this field. It uses the aurora and airglow naturally formed in the atmosphere as the light source, and obtains the information of the upper atmospheric wind field by detecting the interferogram information of the airglow spectral lines without emitting lasers. , has great advantages. The four-in...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/08
CPCG02B5/0808
Inventor 张淳民颜廷昱李祺伟
Owner XI AN JIAOTONG UNIV
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