Laser safety control device and method

A safety control and laser technology, which is applied in the field of optics and electronics, can solve laser safety and other problems, and achieve the effect of avoiding damage and high sensitivity

CN107861170BActive Publication Date: 2020-02-18SHENZHEN ORBBEC CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2020-02-18

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Abstract

The invention provides a laser safety control device, which comprises a depth camera, which comprises a laser light source and is used for collecting a depth image of an object in a first depth range;a range sensor, which is used for detecting proximity of an object in a second depth range, and magnitude relation between the lower limit of the first depth range and the upper limit of the second depth range being adjustable; and a processor, which is connected with the depth camera and the range sensor, and is used for judging whether the proximity of the object is risky, and carrying out control on the laser light source when the proximity of the object is risky. The invention also provides a laser safety control method. The laser safety control device and method can effectively prevent laser from causing damage to the collected object in the 3D image acquisition process, can realize multiple-proximity detection, and have different safety levels.
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Description

technical field

[0001] The invention relates to the fields of optics and electronics technology, in particular to a laser safety control device and method. Background technique

[0002] 3D imaging technology can be used in smart devices to realize 3D face recognition, scanning, unlocking and other functions. Compared with fingerprint recognition, 3D face recognition is not only more accurate, but also applicable to a wider range of scenarios. 3D imaging technology based on infrared structured light technology It is not sensitive to light, and can realize skin color detection and three-dimensional detection, and has extremely high face recognition security.

[0003] Infrared structured light 3D depth cameras generally include a laser transmitter and a receiver. In order to prevent the laser from harming the human body, a special design is required for the transmitter and a safe use distance must be set to ensure laser safety. However, for integrated 3D depth cameras Smart de...

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Embodiment Construction

[0020] The present invention will be described in further detail below in combination with specific embodiments and with reference to the accompanying drawings. Wherein the same reference numerals denote the same components, unless otherwise specified. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the embodiments of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0022] It should be noted that when an element is referred to as being “fixed” or “disposed on” another element, it may be directly on the other elem...