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Structured light module, three-dimensional scanning device and method and electronic device

A three-dimensional scanning, structured light technology, applied in the field of optical measurement, can solve the problem of low energy efficiency of structured light modules

Inactive Publication Date: 2021-06-01
NANCHANG O FILM OPTICAL ELECTRONICS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a structured light module with high energy efficiency, a three-dimensional scanning device and method, and an electronic device for the problem of low energy efficiency of existing structured light modules.

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  • Structured light module, three-dimensional scanning device and method and electronic device
  • Structured light module, three-dimensional scanning device and method and electronic device
  • Structured light module, three-dimensional scanning device and method and electronic device

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Embodiment Construction

[0040] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0041] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes ...

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Abstract

The invention relates to a three-dimensional scanning device and a structured light module thereof, the propagation direction of an original light spot can be changed by rotating a first optical assembly, so that the field angle of an emitter is changed, and a receiver can receive a reflected light spot by synchronously rotating a second optical assembly. Along with the rotation of the first optical assembly, the emitter projects original light spots from a plurality of different field angles in sequence, and the receiver receives the original light spots according to a preset frequency, each group of reflected light spots are compared with the corresponding original light spots to obtain a group of point clouds of the object to be measured. The three-dimensional information of the to-be-measured object can be obtained by superposing multiple groups of point clouds. Because the three-dimensional information of the to-be-measured object is finally obtained by superposing a plurality of groups of point clouds, partial loss is allowed to exist in each group of point clouds. Therefore, the emission power of the emitter can be correspondingly reduced, and the energy efficiency can be improved. In addition, the invention also provides a three-dimensional scanning method and an electronic device.

Description

technical field [0001] The invention relates to the technical field of optical measurement, in particular to a structured light module, a three-dimensional scanning device and method, and an electronic device. Background technique [0002] Structured light technology is a common measurement method in the field of non-contact optical three-dimensional measurement. Structured light technology has the advantages of low cost and high precision, so it is widely used. The principle of structured light technology is that the emitter first emits a specific pattern of light spots on the object, and then receives the light spot pattern code reflected on the surface of the object through the camera, and finally calculates the three-dimensional coordinates of the object by using the triangulation principle. [0003] However, existing structured light modules still have several defects when applied to 3D reconstruction. For example, the scanning accuracy is not high, and there is point...

Claims

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Application Information

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IPC IPC(8): G01S17/02G01S17/89G01S7/481
CPCG01S7/481G01S17/02G01S17/89
Inventor 谈智伟许哲源黎康熙蔡雄宇
Owner NANCHANG O FILM OPTICAL ELECTRONICS TECH CO LTD
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