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Optical filter

A kind of optical filter and optical filter technology, applied in the field of optical filter, can solve the problem of affecting spectral characteristics, difficult to achieve ideal infrared light and ultraviolet light cut-off performance, etc., to reduce transmittance, reduce color shift phenomenon, transmittance Enhanced effect

Inactive Publication Date: 2018-10-16
PLATINUM OPTICS TECH SUZHOU INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, reducing the film layer of the filter will affect its spectral characteristics and it is difficult to achieve ideal infrared and ultraviolet light cut-off performance

Method used

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Embodiment Construction

[0023] A number of implementations of the present application will be disclosed in the following figures. For the sake of clarity, many practical details will be described together in the following description. It should be understood, however, that these practical details should not be used to limit the application. That is to say, in some embodiments of the present application, these practical details are unnecessary. In addition, for the sake of simplifying the drawings, some well-known and commonly used structures and components will be shown in a simple schematic manner in the drawings.

[0024] The terms "first", "second", etc. used herein do not refer to the order or order, nor are they used to limit the present application, but are only used to distinguish components or operations described with the same technical terms. .

[0025] see figure 1 , which is a schematic diagram of an optical filter 1 according to an embodiment of the present application; The multi-lay...

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Abstract

The invention relates to an optical filter, and the optical filter comprises a near-infrared light filtering substrate which is provided with near-infrared light absorption dye; an absorption layer which contains near-infrared light and ultraviolet light absorption dye and is formed on the surface of the near-infrared light filtering substrate; a first multilayer film which is formed on the absorption layer; and a second multilayer film which is formed on the other surface of the near-infrared light filtering substrate.

Description

technical field [0001] The invention relates to the technical field of an optical filter, in particular to an optical filter used in an imaging device. Background technique [0002] In the digital age, mobile devices such as cameras or mobile phones use Charge Coupled Detectors (CCD) or Complementary Metal Oxide Semiconductors (CMOS) to convert images into electronic digital signals. Interfering with normal images, affecting the color of normal images, and causing problems such as heat and noise. Specifically, the sensing range of the image sensing element to light waves is about 350nm to 1200nm in wavelength, so it is possible to capture infrared light and ultraviolet light. In order to prevent infrared light and ultraviolet light from affecting the presentation of the picture, a filter must be installed in front of the image sensing element to block infrared light and ultraviolet light from entering the image sensing element, avoiding the aforementioned image problems and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/20G02B5/22
CPCG02B5/201G02B5/208G02B5/223G02B5/282H01L27/1462C08J5/18G02B5/281C08K5/3417G02B1/04G02B5/22H01L27/14618H01L27/14621H01L27/14625
Inventor 谢峻诚欧俊尧吕中汉
Owner PLATINUM OPTICS TECH SUZHOU INC