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Structured light projector, camera module and electronic equipment

A camera module and structured light technology, which is applied in the fields of instruments, optics, photography, etc., can solve the problem of large thickness of the structured light projector

Active Publication Date: 2022-05-31
FUZHOU ROCKCHIP SEMICON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a structured light projector, a camera module and electronic equipment to solve the problem of excessive thickness of the structured light projector in the prior art

Method used

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  • Structured light projector, camera module and electronic equipment
  • Structured light projector, camera module and electronic equipment
  • Structured light projector, camera module and electronic equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The light source 21 is, for example, a laser or a laser array for emitting light. Optionally, the light source 21 also includes

[0042] The rhombus prism 22 is used for refracting the light entering from its first port, and from its second port after refraction

[0052] Optionally, the light source 21 is an edge emitting laser (EEL).

[0056] Optionally, referring to FIG. 4 , the structured light projector 2 also includes a second diffractive optical element 24. the second derivative

Embodiment 2

[0064] Please refer to FIG. 5, which is a schematic structural diagram of the structured light projector 2 in the second embodiment of the present invention. This example and

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Abstract

The invention provides a structured light projector, a camera module and electronic equipment. The structured light projector includes: a light source, used to emit light; a turning optical element, arranged on one side of the light source, used to turn the light entering from its first port to its second port for emission; A diffractive optical element is arranged on the side of the turning optical element away from the light source, and is used for focusing and reproducing the light rays bent from the turning optical element to form structured light. Compared with the prior art, the structured light projector has a thinner thickness.

Description

Structured light projector, camera module and electronic equipment technical field The present invention relates to a kind of optical assembly, particularly relate to a kind of structured light projector, camera module and electronic device ready. Background technique Structured light projector is the key device of 3D structured light module, and the projector on the market is mainly composed of light source, Straight mirror and diffractive optical elements (Diffractive Optical Elements, DOE) are stacked. With a certain thickness, the total thickness of the stacked structured light projectors usually exceeds 4mm. However, consumer electronics The size is getting thinner and thinner, making it difficult for existing structured light projectors to meet the requirements. Therefore, how to design a thinner structured light The projector has become one of the technical problems that the related technicians need to solve urgently. SUMMARY OF THE INVENTION In view of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B15/02G02B27/42H04N13/254
CPCG03B15/02G02B27/4205H04N13/254
Inventor 倪强韩江
Owner FUZHOU ROCKCHIP SEMICON