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公开(公告)号：US11828880B2
公开(公告)日：2023-11-28
申请号：US16344926
申请日：2016-11-29
Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE
Inventor： Hyun Yong Choi , Choul Jun Choi , Hyun Chang Cho
Abstract: The present invention relates to a light transmitting and receiving device and method, which output the power of a partial optical pulse such that the power thereof is different from that of another optical pulse, so as to receive reflected light, and identify whether an object, which is undetectable using the reflected light of an optical pulse outputted with relatively low power, is detected using the reflected light of an optical pulse outputted with relatively high power, so as to adjust the power of an optical pulse to be output thereafter. Therefore, detection efficiency can be maximized using low power while eye safety requirements are satisfied.
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公开(公告)号：US10670702B2
公开(公告)日：2020-06-02
申请号：US15569538
申请日：2015-09-03
Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE
Inventor： Hyun Yong Choi , Choul Jun Choi , Seung Hun Oh , Hyun Chang Cho
IPC: G01C3/08 , G01S7/481 , G01S17/89 , G02B26/10 , G01S17/931
Abstract: A light detection and ranging (LiDAR) optical system, according to one embodiment of the present invention, comprises: a first mirror which is disposed to make a predetermined first angle with a horizontal plane and has a first hollow; a light source for outputting a pulse laser from the lower portion of the first mirror; a second mirror which is disposed to make a predetermined second angle with the first mirror so that the pulse laser passes through the first hollow and travels to a measurement target; at least two path control mirrors which reflect the pulse laser so that the path of the pulse laser is formed on a reflective surface of the second mirror; a light receiving lens for receiving, from the lower portion of the first mirror, light which has been reflected through the first mirror.
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