Laser projection module, depth camera and electronic device
A technology of laser projection and depth camera, which is applied in optics, optical components, instruments, etc., can solve the problems of focus change, lens temperature drift, and affecting the accuracy of laser patterns, etc., and achieves the effect of low cost and convenient mass production
Active Publication Date: 2018-07-20
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
View PDF8 Cites 4 Cited by
- Summary
- Abstract
- Description
- 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
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0044] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, only used to explain the embodiments of the present invention, and should not be construed 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", "lateral", "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 accompanying dra...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More 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 collimating element comprises a plurality of lenses which are arranged on a light-emitting path of the light source. The plurality of lenses comprise at least one first type lens and at leastone second type lens. The first type lens comprises a transparent substrate, which comprises opposite upper and lower surfaces. The first type lens further comprises an upper sub-lens formed on the upper surface and a lower sub-lens formed on the lower surface, and the upper sub-lens corresponds to the lower sub-lens. The second type lens is made of a plastic material. According to the laser projection module, the depth camera and the electronic device, the first type lens is manufactured by forming the upper and lower sub-lenses on the transparent substrate, and the problem that the lens cancause a temperature drift phenomenon when the ambient temperature changes is solved; and the second type lens is made of the plastic material, thus is low in cost and convenient in mass produce.
Description
technical field [0001] The present 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 have a temperature drift phenomenon. When the temperature drift is large, the focus of the lens will even change, which will affect the laser projection module projected into the target space. The precision of the pattern. SUMMARY 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 of the embodiment of the present invention includes: [0005] a light source for emitting laser light; [0006] a collimating element, the c...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G02B3/00G02B27/42G02B1/04G03B15/02
CPCG02B27/42G03B15/02G02B1/041G02B3/00
Inventor 韦怡
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD