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Title:
INFRARED EMISSION MODULE FOR WIDE-ANGLE TIME OF FLY OPTICAL RANGING AND MODULE THEREOF
Document Type and Number:
WIPO Patent Application WO/2022/000575
Kind Code:
A1
Abstract:
An infrared emission module for wide-angle time of fly optical ranging, comprising a base (10), a substrate (1), a vertical-cavity surface emitting laser (VCSEL) chip (2) and a wide-angle beam expanding lens system (6). The wide-angle beam expanding lens system (6) consists of at least one lens. At least one lens in the wide-angle beam expanding lens system (6) is a concave lens which is concave in the center. One of the curved surface contours of the concave lens is concave in the center and gradually extends to the outside to form an arc-shaped slope shape, and is located on the other side of the corresponding surface of the light-emitting surface of the VCSEL chip (2). The wide-angle beam expanding lens system (6) expands a light beam angle to between 60°C and 150°C. The present invention is simple in structure, implements uniform light distribution at a large angle, and improves optical efficiency. An infrared emission module for wide-angle time of fly optical ranging is capable of obtaining a 3D image with a wide field of view angle by means of a wide-angle receiver assembly (4).

Inventors:
LANG HUANBIAO (CN)
Application Number:
PCT/CN2020/102181
Publication Date:
January 06, 2022
Filing Date:
July 15, 2020
Export Citation:
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Assignee:
MIKOLTA OPTICAL TECH CO LIMITED (CN)
International Classes:
G01S7/484; G01S7/481; G01S17/10; G02B1/00; G02B1/04; G02B3/00; G02B27/09
Foreign References:
CN210629640U2020-05-26
CN109996991A2019-07-09
CN104425692A2015-03-18
JP2006317720A2006-11-24
CN111142215A2020-05-12
CN208366323U2019-01-11
CN108074947A2018-05-25
CN110966525A2020-04-07
CN110084090A2019-08-02
CN108386740A2018-08-10
US20140098223A12014-04-10
Attorney, Agent or Firm:
BEIJING EASY JOY SOON IP AGENT LTD (CN)
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