Laser projection module, depth camera and electronic device
A laser projection and module technology, applied in optics, optical components, instruments, etc., can solve problems such as focus change, lens temperature drift, and affect the accuracy of laser patterns, etc., to achieve the effect of solving the temperature drift phenomenon
Active Publication Date: 2018-09-07
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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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
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[0036] 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.
[0037] 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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The invention discloses a laser projection module, a depth camera and an electronic device. The laser projection module includes a light source, a collimating element, and a diffractive optical element. The light source is configured to emit a laser. The collimating element is configured to collimate the laser. The collimating element comprises one or more lenses disposed on the light-emitting path of the light source. The lenses are made of a glass material. The diffractive optical element is configured to diffract the laser collimated by the collimating element to form a laser pattern. In the laser projection module, the depth camera and the electronic device according to the embodiment of the invention, the lenses of the collimating elements are all made of the glass material, which solves the problem that the lenses may have a temperature drift phenomenon when ambient temperature changes.
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 collimator and a diffractive optical element (DOE). 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 precision. 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: [0005] a light source for emitting laser light; [0006] A collimating element, the coll...
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IPC IPC(8): G02B27/42G02B1/00
CPCG02B1/00G02B27/4205
Inventor 韦怡
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD