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A light source structure, an optical projection module, a sensing device and equipment

A light source and floodlight technology, applied in the optical field, can solve the problems of increasing cost, disadvantageous product miniaturization design, increasing the area of ​​light emitting area of ​​the light source, etc., to achieve the effect of improving efficiency

Active Publication Date: 2022-07-26
SHENZHEN FUSHI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to obtain a higher Hamming distance, the arrangement of the light emitting units of the existing light source structure usually needs to increase the area of ​​the light emitting area of ​​the light source so that the light emitting units have more arrangement possibilities, but increasing the area of ​​the light emitting area of ​​the light source will also increase cost, and the large light source structure is not conducive to the miniaturization design of the product

Method used

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  • A light source structure, an optical projection module, a sensing device and equipment
  • A light source structure, an optical projection module, a sensing device and equipment
  • A light source structure, an optical projection module, a sensing device and equipment

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Embodiment Construction

[0039] Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, only used to explain the present application, and should not be construed as a limitation on the present application. In the description of this application, it should be understood that the terms "first" and "second" are only used for description, and cannot be interpreted as indicating or implying relative importance or implying the number or arrangement of the indicated technical features order. Thus, the technical features defined with "first" and "second" may explicitly or implicitly include one or more of the technical features. In the description of the present application, "plurality" means two or...

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Abstract

The present application is applicable to the fields of optics and electronics, and provides a light source structure for emitting irregularly distributed light spot patterns. The light source structure includes a semiconductor substrate and a plurality of irregularly distributed light emitting units formed on the semiconductor substrate. A patterned light-emitting area is defined on the light-emitting surface of the semiconductor substrate. The patterned light emitting area is rectangular. Taking the lower left corner vertex of the pattern light emitting area as the origin, the extension directions of the two right-angle sides intersecting at the lower left corner are the abscissa axis and the ordinate axis respectively, and the coordinate unit is micrometer, and the plurality of light emitting units are distributed in the pattern light. in the light-emitting area. The present application also provides an optical projection module, a sensing device and equipment including the light source structure.

Description

technical field [0001] The application belongs to the field of optical technology, and in particular relates to a light source structure, an optical projection module, a biometric identification device and equipment. Background technique [0002] The existing three-dimensional (Three Dimensional, 3D) sensing module uses a light source with irregularly distributed light-emitting units to project irregularly distributed light spot patterns on the measured object to sense the three-dimensional information of the measured object. When performing 3D sensing, it is necessary to compare and analyze the irregular light spot pattern projected on the object to be measured and the standard irregular light spot pattern projected on the reference plane, and calculate the measured spot where the light spot is located according to the deformation of the corresponding light spot. 3D data of the position of the target. [0003] Therefore, the time spent in one-to-one correspondence between ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/20G01B11/00
CPCG03B21/2033G03B21/2013G03B21/2006G01B11/00
Inventor 田浦延
Owner SHENZHEN FUSHI TECH CO LTD