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High-low-pass distributed single-spectrum integrated spectral imaging chip structure

A spectral imaging and chip structure technology, applied in the field of spectral imaging, can solve the problems of difficulty in obtaining spectral information, difficult to meet the requirements of spectral detection in the field of material detection, and inability of image information to have three spectral characteristics. Sophisticated, easy-to-apply effects

Active Publication Date: 2022-03-29
TIANJIN JINHANG INST OF TECH PHYSICS
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Problems solved by technology

However, under different light source conditions, the appearance of metamerism makes the image information transmitted by RGB imaging unable to truly reflect the actual three-spectrum spectral characteristics of the substance, and it is also difficult to obtain spectral information that can reflect the characteristics of the substance other than the three primary colors.
Therefore, the traditional RGB imaging method is difficult to meet the spectral detection requirements in the field of material detection

Method used

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  • High-low-pass distributed single-spectrum integrated spectral imaging chip structure
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Embodiment Construction

[0032] In order to make the purpose, content, and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0033] For the single-band spectral imaging microsystem integrated chip structure for specific application fields, the problems that affect the spectral accuracy due to the defects of the semiconductor deposition process are as follows: image 3 As shown, in the application process, it is necessary to use filters to filter out the influence of high step responses outside the central wavelength, and to perform spectral line correction on the output data of the spectral imaging microsystem to obtain accurate single-spectrum wavelength information. In order to simplify the application process of the single-band spectral imaging microsystem and further reduce the application cost, it is necessary to optimize the integrated ...

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Abstract

The invention belongs to the technical field of spectral imaging, and in particular relates to a high-low-pass distributed single-band integrated spectral imaging chip structure. The chip structure adopts a Bayer array structure in which RGBG corresponding filter units are arranged in two rows and two columns. Different filters are integrated on the corresponding pixels of the CMOS sensor. A cycle is formed by four micro filter units, which are periodically arranged according to this structure to form a single The structure of the spectral imaging chip. Wherein, in each of the periods, two FPI filter units, a high-pass filter unit, and a low-pass filter unit with the same central wavelength are included; in the present invention, the pixel-level tiny high-pass filter and low-pass filter unit are used as single-spectrum imaging micro The structural components of the system chip rely on different filters compared to the prior art. The single-band spectral imaging microsystem structure of the invention is simple to apply, and the semiconductor integrated micro-filter unit is relatively low in cost compared to discrete filters. The craftsmanship is mature.

Description

technical field [0001] The invention belongs to the technical field of spectral imaging, and in particular relates to a high-low-pass distributed single-band integrated spectral imaging chip structure. Background technique [0002] Material spectrum is a continuous electromagnetic spectrum that can be used to characterize the physical properties of different substances. For different substances, there are differences in absorption and reflection of electromagnetic waves in different spectral bands, so their spectra are different. Spectral measurement is a non-contact real-time identification method for substances. Compared with traditional gas chromatography, biological enzyme detection methods and other substance detection methods, it has obvious advantages such as fast response, no contact with samples, and high precision. Therefore, it has become one of the most potential substance detection methods. [0003] Spectral imaging technology is a method of obtaining three-dim...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J3/12
CPCG01J3/12G01J2003/1269
Inventor 刘舒扬赵安娜吕津玮张晨周涛贾晓东
Owner TIANJIN JINHANG INST OF TECH PHYSICS