Structured light projector, optoelectronic device and electronic device

A technology of photoelectric equipment and projectors, applied in the field of three-dimensional imaging, can solve the problems of unfavorable depth image acquisition and achieve the effect of easy acquisition

Active Publication Date: 2018-08-10
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method also leads to a problem, that is, when the user is far away from the structured light projector, the energy of the infrared laser transmitted to the user's position and then reflected by the user and returned to the image collector is already very small, so , which is not conducive to the acquisition of depth images

Method used

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  • Structured light projector, optoelectronic device and electronic device
  • Structured light projector, optoelectronic device and electronic device
  • Structured light projector, optoelectronic device and electronic device

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Embodiment Construction

[0019] 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.

[0020] 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.

[0021] I...

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Abstract

The present invention discloses a structured light projector, an optoelectronic device and an electronic device. The structured light projector comprises a laser emitter, a collimation element, a first diffraction element and a condensation element. The laser emitter is configured to emit laser. The collimation element is configured to perform collimation of laser emitted by the laser emitter. Thefirst diffraction element is configured to perform diffraction of laser after collimation by the collimation element. The condensation element is configured to collect laser after diffraction by thefirst diffraction element to reduce the laser divergence. The structured light projector, the optoelectronic device and the electronic device provided by the embodiment of the invention provide a condensation element to reduce the divergence of the whole light beam, in the axis Z direction, corresponding to an emitting laser pattern, and the energy of the laser cannot be attenuated too fast. Eventhough, a distance between a user and a structured light projector is large, an image collector can receive reflected laser with large energy so as to further generate a laser pattern with enough brightness after modulation by users and facilitate obtaining of a depth image.

Description

technical field [0001] The invention relates to the technical field of three-dimensional imaging, in particular to a structured light projector, optoelectronic equipment and electronic devices. Background technique [0002] Existing electronic devices usually use structured light to capture 3D images for further operations such as unlocking and somatosensory games. Structured light is emitted by a structured light projector. Since the structured light is usually an infrared laser, in order to protect the user's eyes from the infrared laser, the structured light projector does not drive the laser transmitter with a large current to emit the infrared laser. However, this method also leads to a problem, that is, when the user is far away from the structured light projector, the energy of the infrared laser transmitted to the user's position and then reflected by the user and returned to the image collector is already very small, so , which is not conducive to the acquisition ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B15/02G02B7/00G02B19/00G02B27/42
CPCG02B7/00G02B19/0004G02B27/425G03B15/02
Inventor 张学勇
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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