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Structured light projector, image acquisition structure and electronics

A projector and structured light technology, which is applied in the fields of optics and electronics, can solve problems affecting the accuracy of laser patterns and temperature drift, and achieve the effects of improving temperature drift, reducing accuracy, and reducing temperature drift

Active Publication Date: 2020-08-21
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Claims
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AI Technical Summary

Problems solved by technology

The collimation element includes a lens. When the ambient temperature changes, the lens will produce a temperature drift phenomenon. When the temperature drift is large, the focus of the lens will change, thereby affecting the accuracy of the laser pattern projected by the structured light projector into the target space.

Method used

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  • Structured light projector, image acquisition structure and electronics
  • Structured light projector, image acquisition structure and electronics
  • Structured light projector, image acquisition structure and electronics

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Embodiment Construction

[0029] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings. The same or similar reference numerals in the drawings represent the same or similar elements or elements having the same or similar functions throughout.

[0030] In addition, the embodiments of the present invention described below in conjunction with the accompanying drawings are exemplary, and are only used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0031] In the present invention, unless otherwise clearly specified and limited, the first feature may be in direct contact with the first feature or the first and second feature may be in direct contact with the second feature through an intermediary. touch. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simpl...

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Abstract

The present invention discloses a structured light projector. The structured light projector comprises a substrate module, a lens cone, a light source, a collimation element and a diffraction opticalelement. The lens cone comprises a lens cone side wall, and the lens cone side wall and the substrate module commonly form a holding cavity. The light source is arranged on the substrate module and isconfigured to emit a laser. The collimation element is configured to collimate the laser and comprises a plurality of lenses which are arranged on a light-transmitting light path of the light sourceand comprising at least one first-class lens, at least one second-class lens with glass materials and at least one liquid-state lens, and the at least one liquid-state lens can change the focal lengthunder the action of the voltage. The diffraction optical element is installed on the lens cone. The present invention further discloses an image obtaining structure and an electronic device. A mode for combination of the lenses is employed to improve the problem of generation of a temperature excursion phenomenon, the feature of small temperature excursion of the glass materials of the second-class lens is employed to reduce the temperature excursion, and the at least one liquid-state lens is employed to change the focal length to solve the problem of reducing the laser pattern accuracy.

Description

technical field [0001] The present invention relates to the field of optical and electronic technologies, and more specifically, relates to a structured light projector, an image acquisition structure and an electronic device. Background technique [0002] A structured light projector generally consists of a light source, a collimator and a diffractive optical element (DOE). The collimation element includes a lens. When the ambient temperature changes, the lens will produce a temperature drift phenomenon. When the temperature drift is large, the focus of the lens will change, thereby affecting the accuracy of the laser pattern projected by the structured light projector into the target space. . Contents of the invention [0003] Embodiments of the present invention provide a structured light projector, an image acquisition structure and an electronic device. [0004] The structured light projector according to the embodiment of the present invention includes: [0005] S...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/42
CPCG02B27/4205
Inventor 张学勇
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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