Laser projection module, depth camera and electronic device

A laser projection and depth camera technology, applied in optics, optical components, instruments, etc., can solve the problems of lens temperature drift, focus change, affecting laser pattern accuracy, etc., achieving low cost, easy mass production, and solving temperature drift. effect of phenomenon

Active Publication Date: 2018-09-28
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The collimation element generally includes a lens structure. When the ambient temperature changes, the lens will have a temperature drift phenomenon. When the temperature drift is large, the focus of the lens will even change, which will affect the laser projected by the laser projection module into the target space. Pattern Accuracy

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

[0044] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The following embodiments described with reference to the accompanying drawings are exemplary, and are only used to explain the embodiments of the present invention, and should not be understood as limitations on the embodiments of the present invention.

[0045] In the description of the embodiments of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front" "," "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and other indications The orientation or positional relationship is based on the orientation or positional relat...

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Abstract

The invention discloses a laser projection module, a depth camera and an electronic device. The laser projection module comprises a light source, a collimating element and a diffractive optical element. The light source is used for emitting the laser. The collimating element is used for collimating the laser. The collimating element includes a plurality of lenses. The plurality of lenses are arranged on the light emitting path of the light source. The plurality of lenses includes at least one first-type lens and at least one second-type lens. The first-type lens is made of glass, and the second-type lens is made of plastic material. The diffractive optical element is used for diffracting the laser after being collimated by the collimating element so as to form a laser pattern. According tothe laser projection module, the depth camera and the electronic device, the first-type lens is made of glass. Therefore, the problem that a lens can generate a temperature drift phenomenon when theambient temperature changes is solved. The second-type lens is made of the plastic material. Therefore, the cost is low, and the mass production is facilitated.

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 laser projection module consists of a light source, a collimating element, and a diffractive optical element (DOE). The collimating element generally includes a lens structure. When the ambient temperature changes, the lens will produce temperature drift. When the temperature drift is large, the focus of the lens will even change, which will affect the laser projected by the laser projection module into the target space. The accuracy of the pattern. Summary of the invention [0003] The embodiments of the present invention provide a laser projection module, a depth camera, and an electronic device. [0004] The laser projection module of the embodiment of the present invention includes: [0005] A light source, the light source is used to emit laser light; [0006] A collimating element...

Claims

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Application Information

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IPC IPC(8): G02B27/30G02B27/42G02B1/00G02B1/04
CPCG02B1/00G02B1/041G02B27/30G02B27/4205
Inventor 韦怡
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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