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Laser projection module, depth camera and electronic device

A technology of laser projection and depth camera, applied in the field of imaging, can solve the problems affecting the performance of the laser transmitter and the large temperature drift of the laser transmitter, and achieve the effect of reducing temperature, avoiding excessive temperature drift and reducing heat

Inactive Publication Date: 2018-07-31
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the laser transmitter heats up too much, the temperature drift of the laser transmitter will be too large, which will affect the performance of the laser transmitter

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

[0014] 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 designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0015] In the description of the present invention, it should be understood that the terms "first" and "second" are used for description purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of said features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0016] I...

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Abstract

The invention discloses a laser projection module. The laser projection module comprises a laser emitter, a collimating element, a diffractive optical element and a temperature detection element. Thelaser emitter is used for emitting laser. The collimating element is used for collimating laser. The diffractive optical element is used for diffraction of the laser which is collimated by the collimating element to form a laser pattern. The temperature detection element is used for detecting the temperature of the laser emitter and outputting a temperature detection signal. The invention furtherdiscloses a depth camera and an electronic device. The laser projection module, the depth camera and the electronic device are provided with the temperature detection element near the laser emitter, and the temperature detection element can detect the temperature of the laser emitter, therefore, when the temperature of the laser emitter is too high, the power of the laser emitter is reduced, so that the problem that the use performance of the laser emitter is influenced by the high temperature drift caused by the high temperature of the laser emitter.

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] Laser emitters generate heat during operation. If the laser transmitter heats up too much, the temperature drift of the laser transmitter will be too large, which will affect the performance of the laser transmitter. 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 projection module according to the embodiment of the present invention includes a laser emitter, a collimation element, a diffractive optical element and a temperature detection element. The laser emitter is used for emitting laser light. The collimating element is used to collimate the laser light. The diffractive optical element is used to diffract the laser collimated by the collimating element to...

Claims

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Application Information

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IPC IPC(8): G01B11/22H01S5/023H01S5/0233
CPCG01B11/22H01S5/0233H04N9/3161H01S5/023H01S5/06804H01S5/02325H01S5/0235G06T7/521H01S3/0085H01S3/08009H01S3/1028
Inventor 张学勇
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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