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Diffraction optical element and manufacturing method thereof, laser projection module, depth camera and electronic device

A diffractive optical element and laser projection technology, applied in optical elements, diffraction gratings, optics, etc., can solve the problems of high manufacturing difficulty, high manufacturing cost, and many manufacturing processes of diffractive optical elements, and achieve cost saving and fewer processes. Effect

Inactive Publication Date: 2018-09-04
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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Problems solved by technology

[0002] Due to the complexity of the diffractive structure on the diffractive optical element, the manufacturing process of the diffractive optical element is more and more difficult, which in turn leads to lower manufacturing efficiency and higher manufacturing cost of the diffractive optical element

Method used

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  • Diffraction optical element and manufacturing method thereof, laser projection module, depth camera and electronic device
  • Diffraction optical element and manufacturing method thereof, laser projection module, depth camera and electronic device
  • Diffraction optical element and manufacturing method thereof, laser projection module, depth camera and electronic device

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Embodiment Construction

[0040] 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 figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0041] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation indicated by rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating ...

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Abstract

A manufacturing method of a diffraction optical element comprises the steps of: providing base materials made of transparent plastic, and imprinting the base materials to form a plurality of multi-step grooves on the base materials. The manufacturing method of the diffraction optical element forms the multi-step grooves on the base materials made of transparent plastic through an imprinting mode to obtain the diffraction optical element so as to reduce the process of manufacturing the diffraction optical element, improve the manufacturing efficiency of the diffraction optical element, and reduce the manufacturing cost of the diffraction optical element. The present invention further discloses a diffraction optical element, a laser projection module, a depth camera and an electronic device.

Description

technical field [0001] The present invention relates to the technical field of consumer electronics, and in particular to a manufacturing method of a diffractive optical element, a diffractive optical element, a laser projection module, a depth camera and an electronic device. Background technique [0002] Since the diffractive structure on the diffractive optical element is more complicated, the manufacturing process of the diffractive optical element is more and more difficult, which leads to lower manufacturing efficiency and higher manufacturing cost of the diffractive optical element. Contents of the invention [0003] Embodiments of the present invention provide a method for manufacturing a diffractive optical element, a diffractive optical element, a laser projection module, a depth camera, and an electronic device. [0004] The manufacturing method of the diffractive optical element according to the embodiment of the present invention includes: [0005] Provide a ...

Claims

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Application Information

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IPC IPC(8): G02B5/18G02B1/00G02B27/42
CPCG02B5/1857G02B1/00G02B27/4205
Inventor 周奇群
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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