Structured light projection device

A technology of projection device and structured light, applied in measurement devices, optics, optical components, etc., can solve the problems of inconvenient light miniaturization, miniaturization design, increase optical path distance, increase structure and volume, etc., and achieve miniaturization of volume. , increase the optical path, and achieve the effect of lightening

Active Publication Date: 2021-05-11
TRIPLE WIN TECHSHENZHEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the light source is emitted, the light spot can be optimized through a certain distance of optical path; however, in order to increase the optical path distance, the structure and volume of the product will be correspondingly increased, which is not convenient for lightweight and miniaturized design

Method used

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  • Structured light projection device
  • Structured light projection device
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Embodiment Construction

[0028] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0029] In the following description, many specific details are set forth in order to fully understand the present invention, and the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understo...

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Abstract

The invention provides a structured light projection device, and the device comprises a light source used for emitting laser; a light path changing element which is arranged on an emergent light path of the laser and is used for changing the propagation direction of the laser; and a diffractive optical element which is arranged on a changed light path of the laser and is used for generating structured light. The device is characterized in that the light path changing element can change the propagation direction of the laser for at least three times, and the emergent direction of the laser after the propagation direction is changed for the last time is parallel to the emergent direction of the light source.

Description

technical field [0001] The present invention relates to the technical field of depth cameras, and more specifically, to a structured light projection device for depth cameras. Background technique [0002] This section is intended to provide a background or context to a detailed description of the invention that is recited in the claims. The descriptions herein are not admitted to be prior art by inclusion in this section. [0003] The depth camera can obtain the depth information of the target to realize 3D scanning, scene modeling, and gesture interaction. Compared with the currently widely used RGB camera, the depth camera is gradually being valued by all walks of life. For example, the combination of depth camera, TV, computer, etc. can realize somatosensory games to achieve the effect of two-in-one game and fitness. [0004] The core component of the depth camera is the optical projection module. With the continuous expansion of applications, the optical projection mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B15/05G02B27/42G02B17/02G02B17/06
CPCG03B15/05G02B27/4205G02B17/023G02B17/06G02B27/425G02B17/006G01C3/02G02B27/30
Inventor 齐伟伟林精皇
Owner TRIPLE WIN TECHSHENZHEN CO LTD
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