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Multispectral image sensor and imaging module thereof

A multi-spectral image and sensor technology, applied in the field of data processing, can solve the problems of low real-time performance, imaging precision and low efficiency, and achieve the effect of ensuring real-time performance, imaging precision and efficiency

Pending Publication Date: 2021-10-22
SHENZHEN ORBBEC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a multi-spectral image sensor and its imaging module, aiming to solve the existing multi-spectral image sensor technology, generally based on the multi-spectral image sensor switching filter mode, but based on the above principles The multi-spectral image sensor, when acquiring multi-spectral images, because different spectra are collected in time-sharing, so the real-time performance is low, and different spectra are not collected at the same time, which leads to the problem of low imaging accuracy and efficiency

Method used

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Embodiment 1

[0033] figure 1 A schematic structural diagram of a multispectral image sensor provided by an embodiment of the present invention is shown. For ease of description, only parts related to the embodiments of the present invention are shown. The details are as follows:

[0034] see figure 1 As shown, a multispectral image sensor provided in an embodiment of the present invention includes: a microlens array 101, a filter array 102, and a photosensitive chip 103 arranged in sequence along the incident light direction;

[0035] The photosensitive chip 103 includes a plurality of pixel units;

[0036] The filter array 102 includes at least one filter unit group; each filter unit group contains a plurality of filters corresponding to not exactly the same preset wavelength; each filter is used to pass the incident Light of the predetermined wavelength corresponding to the filter in the light;

[0037] The microlens array 101 includes at least one microlens unit, and the microlens ...

Embodiment 2

[0057] Figure 9 A schematic structural diagram of a multispectral image sensor provided by another embodiment of the present invention is shown. For ease of description, only parts related to the embodiments of the present invention are shown. The details are as follows:

[0058] The multispectral image sensor includes: a microlens array 901, a filter array 902, and a photosensitive chip 903 arranged in sequence along the incident light direction;

[0059] The photosensitive chip 903 includes a plurality of pixel units;

[0060] The filter array 902 includes at least one filter unit group; each filter unit group contains a plurality of filters corresponding to not exactly the same preset wavelength; each filter is used to pass The light of the preset wavelength corresponding to the filter in the incident light; the filters in each filter unit group are arranged in a target manner; the target mode is the filter unit The optimal corresponding arrangement of the image acquis...

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Abstract

The invention is applicable to the technical field of sensors, and provides a multispectral image sensor and an imaging module thereof, and the multispectral image sensor comprises a microlens array, an optical filter array and a photosensitive chip which are sequentially arranged along the direction of incident light; the photosensitive chip comprises a plurality of pixel units; the optical filter array comprises at least one optical filter unit group; each light filtering unit group comprises a plurality of light filters corresponding to different preset wavelengths; each different optical filter is used for allowing the light with the preset wavelength corresponding to the optical filter in the incident light to pass through; and the micro-lens array comprises at least one micro-lens unit, the micro-lens unit is used for converging incident light and enabling the converged incident light to be focused on the light sensing chip through the light filter array. According to the invetion, the multispectral image sensor comprises a plurality of light filters corresponding to different preset wavelengths. The purpose of collecting different spectrums at the same time during imaging is achieved, and the imaging precision, efficiency and accuracy are improved.

Description

technical field [0001] The invention belongs to the technical field of data processing, and in particular relates to a multispectral image sensor and an imaging module thereof. Background technique [0002] Spectral imaging is one of the main existing imaging technologies. Because the data based on spectral imaging not only contains image information, but also contains spectral information. Spectral information can reflect the spectral intensity of each pixel in each band when the image is taken. Information can be used for qualitative or even quantitative analysis of the subject in the image, and can be applied to a variety of occasions with different needs. [0003] The existing multispectral image sensor technology is generally based on the multispectral image sensor in the way of switching filters. When multispectral images need to be obtained, the filters corresponding to different preset wavelengths on the photosensitive chip are switched to acquire Multi-spectral ima...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/146H04N23/12
CPCH01L27/14627H01L27/14621H01L27/14645
Inventor 黄泽铗师少光张丁军江隆业李威
Owner SHENZHEN ORBBEC CO LTD