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A low polarization aberration color separation film and its preparation method

A color separation film and low polarization technology, applied in the field of low polarization aberration color film and its preparation, can solve problems such as polarization aberration, and achieve the effect of reducing influence and improving imaging quality

Active Publication Date: 2021-02-05
BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is: to overcome the deficiencies of the existing color separation film, provide a color separation film with low polarization aberration and its preparation method, and solve the problem of P polarization and Disadvantages of Polarization Aberrations Introduced by Large Fluctuation of Reflected Phase Shift of S-polarized Light

Method used

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  • A low polarization aberration color separation film and its preparation method
  • A low polarization aberration color separation film and its preparation method
  • A low polarization aberration color separation film and its preparation method

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Embodiment Construction

[0029] A color separation film with low polarization aberration, the color separation film includes a substrate, a silicon dioxide layer and a titanium dioxide layer;

[0030] The material of the substrate is transparent glass materials such as K9 or quartz;

[0031] The silicon dioxide layer and the titanium dioxide layer are stacked alternately;

[0032] The material of the silicon dioxide layer is silicon dioxide;

[0033] The material of the titanium dioxide layer is titanium dioxide, and the titanium dioxide layer is on the substrate;

[0034] Forty-six layers of thin film material composed of the substrate and a certain thickness of titanium dioxide and silicon dioxide are alternately stacked. The first layer is connected to the substrate, and the forty-sixth layer is in contact with the incident air. The film structure is shown in the following table:

[0035] Table 1. Film layer structure of color separation film

[0036]

[0037]

[0038] The color separation...

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Abstract

The invention relates to a low-polarization aberration color separation filter and a preparation method thereof, belongs to the technical field of optical instruments, and aims at overcoming the defect that polarization aberrations are caused as P and S light reflection phases of existing color separation filters fluctuate greatly under convergent light incidence conditions. The low-polarization aberration color separation filter is not only capable of realizing the color separation function of existing color separation filters, but also capable of effectively controlling the P and S light reflection phases so as to greatly decrease the influences, on optical transfer functions of optical systems, of color separation filter using; and the using of the color separation filter is capable ofimproving the imaging quality of the optical systems.

Description

technical field [0001] The invention relates to a color separation film with low polarization aberration and a preparation method thereof, which belongs to the technical field of optical instruments and can be applied to optical analysis instruments and optical detector technologies. Low polarization aberration means that within the incident range of 45°, P light and The reflection phase of S light changes within one cycle, and the reflection phase value is not greater than 180°. Background technique [0002] Dichroic film means that when the light is incident at a certain angle, part of the light is reflected and part of the light is transmitted, so as to achieve the purpose of color separation. It is a key component of many optical systems and is widely used in optical detection and optical measurement. Its spectroscopic applications such as figure 1 As shown, for parallel incident light, the system can realize the function of reflecting part of the incident light and tra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/26
CPCG02B5/26
Inventor 王利周于鸣刘晓林雷文平王刚白云立于建海肖正航张继友
Owner BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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