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Laser projection module, depth camera and electronic device

A technology of laser projection and modules, applied in the field of imaging, can solve security issues and other issues, and achieve the effect of improving security

Inactive Publication Date: 2018-08-10
SHENZHEN HEYTAP TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the optical system is usually composed of glass or other fragile parts. Once the optical system is broken in case of falling, the laser will be emitted directly, irradiating the user's body or eyes, causing serious safety problems

Method used

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  • Laser projection module, depth camera and electronic device
  • Laser projection module, depth camera and electronic device
  • Laser projection module, depth camera and electronic device

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Embodiment Construction

[0015] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, are only for explaining the embodiments of the present invention, and should not be construed as limiting the embodiments of the present invention.

[0016] In describing the embodiments of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front ", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", etc. The orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the e...

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PUM

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Abstract

The invention discloses a laser projection module. The laser projection module comprises a light source, a collimation component, a diffractive optical element and a laser distribution detection assembly. The light source emits laser, the collimation component collimates the laser, the diffractive optical element diffracts the collimated laser to form a laser pattern, and the laser distribution detection assembly is arranged in a light emitting optical path of the light source, and used to convert an optical signal emitted by the light source into electric signal output so as to determine whether the collimation component and / or the diffractive optical element are / is broken, and if YES, the laser projection module is not started. Thus, damage on the body or eyes of a user is avoided. In addition, the invention also discloses a depth camera and an electronic device.

Description

technical field [0001] The invention relates to the field of imaging technology, in particular to a laser projection module, a depth camera and an electronic device. Background technique [0002] The structured light camera uses a light source to emit laser light, thereby assisting the infrared camera to obtain structured light images. Under normal circumstances, the energy of the laser emitted by the light source is attenuated after passing through the optical system (such as collimating elements, diffractive optical elements), and will not cause harm to the human body. However, the optical system is usually composed of glass or other fragile parts. Once the optical system breaks when it is dropped, the laser will be emitted directly, irradiating the user's body or eyes, causing serious safety problems. Contents of the invention [0003] Embodiments of the present invention provide a laser projection module, a depth camera, and an electronic device. [0004] The laser p...

Claims

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Application Information

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IPC IPC(8): G03B15/02G01N21/95G03B30/00
CPCG03B15/02G01N21/95G01N2021/9511
Inventor 白剑
Owner SHENZHEN HEYTAP TECHNOLOGY CO LTD