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Three-dimensional sensing system based on vertical cavity surface transmission laser device array

A vertical cavity surface emission and laser array technology, applied in the field of sensing, can solve the problems of low integration of three-dimensional sensing systems, and achieve the effects of no catastrophic optical damage, fast modulation rate, and high integration

Pending Publication Date: 2018-10-19
度亘核芯光电技术(苏州)有限公司
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Problems solved by technology

[0005] For this reason, the technical problem to be solved by the present invention is: in the prior art, the integration degree of the three-dimensional sensing system is low

Method used

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  • Three-dimensional sensing system based on vertical cavity surface transmission laser device array
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  • Three-dimensional sensing system based on vertical cavity surface transmission laser device array

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Embodiment

[0053] An embodiment of the present invention provides a three-dimensional sensing system based on a vertical cavity surface emitting laser array, such as figure 1 As shown, it includes an optical detection module 2 and a data processing module 3 . Wherein, the optical detection module 2 is used for transmitting a laser signal to the target object 1 under the first condition, and for receiving the laser signal reflected back by the target object 1 under the second condition. The data processing module 3 is connected with the optical detection module 2 for analyzing and processing the laser signal reflected back by the target 1 .

[0054] That is, the optical detection module 2 can play two functions of emitting laser signals and receiving laser signals under different conditions. The three-dimensional sensing system based on the vertical cavity surface emitting laser array can realize two functions of transmitting and receiving through one component, which has a high degree o...

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Abstract

The invention relates to the sensing technology field and discloses a three-dimensional sensing system based on a vertical cavity surface transmission laser device array. The system comprises a signaltransmission sub-module, a signal receiving sub-module, an optical path adjustment module and a data processing module, wherein the signal transmission submodule is used for transmitting a laser signal to a target under the first condition, the signal receiving submodule is used for receiving the laser signal reflected by the target under the second condition, the optical path adjustment module is used for shaping the laser transmitted by the signal transmission sub-module into parallel light which is then transmitted to the target and used for shaping the laser reflected by the target into parallel light which is then transmitted to the signal receiving sub-module, and the data processing module is used for analyzing and processing the laser signal reflected by the target. The system isadvantaged in that both the signal transmission sub-module and the signal receiving sub-module are vertical cavity surface transmission laser device (VCSEL) arrays, the signal transmission sub-moduleand the signal receiving sub-module are integrated on the same motherboard, and the integration degree is relatively high.

Description

technical field [0001] The invention relates to the field of sensing technology, in particular to a three-dimensional sensing system based on a vertical cavity surface emitting laser array. Background technique [0002] Vertical cavity surface emitting laser (Vertical Cavity Surface Emitting Laser, VCSEL) has low threshold current, no catastrophic optical damage (COD), long life, single-mode lasing, fast modulation rate, small divergence angle, high coupling efficiency, It has many advantages such as low price, and it has very significant competitive advantages and market value in the fields of 3D-Sensing (3D-Sensing) and imaging. [0003] In 2017, Lumentum has integrated 940nm VCSEL arrays into the 3D sensing cameras of iPhone 8 and iPhone X to realize the face recognition function, which has led to a research boom in 3D sensing technology. 3D sensing technology mainly uses lasers to emit laser signals to target objects or faces. The target objects or faces will reflect th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/89H01S5/183
CPCH01S5/183G01S17/89H01S5/0028H01S5/423
Inventor 杨晓杰宋院鑫杨国文赵卫东
Owner 度亘核芯光电技术(苏州)有限公司
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