公开(公告)号：US20190090726A1

公开(公告)日：2019-03-28

申请号：US16041427

申请日：2018-07-20

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hyoungjun PARK ,  Ji Hyoung RYU ,  Keo-Sik KIM ,  Hyun Seo KANG ,  Kyeeun KIM ,  Sung Chang KIM ,  Gi Hyeon MIN ,  Si Woong PARK ,  Dong Hoon SON ,  CHAN IL YEO ,  Dongsoo LEE ,  Young Soon HEO

IPC: A61B1/00 ,  A61B1/06 ,  A61B1/04

Abstract: Disclosed is an optical device. The optical device includes: a first WDM filter for dividing an optical signal transmitted through and reflected from a measured subject into an optical signal of an infrared band and a first optical signal through wavelength division multiplexing; a first LC tunable wavelength filter disposed at an output end of the first WDM filter, and selectively filtering the optical signal of the infrared band; a second WDM filter for dividing the first optical signal into an optical signal of a first visible light band and a second optical signal through wavelength division multiplexing; and a second LC tunable wavelength filter disposed at an output end of the second WDM filter, and selectively filtering the optical signal of the first visible light band.

公开(公告)号：US20180252579A1

公开(公告)日：2018-09-06

申请号：US15825303

申请日：2017-11-29

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hyun Seo KANG ,  Jeong Eun KIM ,  Jaisang KOH ,  Keo-Sik KIM ,  Sung Chang KIM ,  Hee Seung KIM ,  Ji Hyoung RYU ,  Hyoungjun PARK ,  Dong Hoon SON ,  CHAN IL YEO ,  Young Soon HEO

IPC: G01J3/02 ,  G01J3/10 ,  G09G3/20

CPC classification number: G01J3/0227 ,  G01J3/10 ,  G01J2003/102 ,  G09G3/2003

Abstract: An integrated optical measurement apparatus includes: an optical signal transmission unit varying a wavelength of an optical signal to be transmitted and controlling power of the optical signal such that the wavelength is varied to be output to the outside; an optical signal receiving unit measuring power and a wavelength from the optical signal input from the outside; and a controller controlling the optical signal transmission unit and the optical signal receiving unit.

公开(公告)号：US20180088378A1

公开(公告)日：2018-03-29

申请号：US15499392

申请日：2017-04-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hyoung Jun PARK ,  Hyun Seo KANG ,  Keo Sik KIM ,  Sung Chang KIM ,  Young Sun KIM ,  Jeong Eun KIM ,  Hee Seung KIM ,  Ji Hyoung RYU ,  Dong Hoon SON ,  Chan Il YEO ,  Young Soon HEO

IPC: G02F1/1347 ,  G02F1/13363 ,  G02F1/135 ,  G02F1/1335 ,  G01J4/00

CPC classification number: G02F1/13473 ,  G02F1/0136 ,  G02F2001/0142 ,  G02F2201/58

Abstract: Disclosed is a polarimetric-analysis-type dual liquid crystal (LC) wavelength filter module capable of miniaturization or optical integration in the form of a package. The polarimetric-analysis-type dual liquid crystal (LC) wavelength filter module includes a beam displacer disposed on a propagation path of light of an unpolarized light source for emitting unpolarized light and configured to generate two orthogonal polarization components corresponding to two polarization axes from the light of the unpolarized light source such that the polarization components are separated at a predetermined angle, a half-wavelength retarder disposed apart at a rear end of the beam displacer along the light propagation path, and a dual LC wavelength-tunable filter having two LC wavelength-tunable filters that overlap with a gap therebetween to detect light intensities of first polarized light of a Transverse Electric (TE) mode that is directly delivered from the beam displacer and second polarized light of the TE mode that is transmitted through or via the half-wavelength retarder and then converted.