Abstract:
A laser projector according to an embodiment of the present invention includes: a beam emission unit emitting a laser beam; and a speckle suppression unit which modulates a phase of the laser beam emitted from the beam emission unit to suppress speckles. The speckle suppression unit can modulate the phase of the laser beam with a speed unrecognizable to the human eye to modulate the shapes of the speckles, thereby implementing a high-resolution screen.
Abstract:
A fingerprint recognition device based on a low coherence interferometer according to an embodiment of the present invention comprises: a fingerprint recognition probe which is coupled to one section among sections of a connection part connected to a light source generating light, and which recognizes a fingerprint of a person; a reference mirror which is coupled to the other section among the sections of the connection part, and which reflects the light from the light source; and a light detector which is coupled to another section of the connection part and which detects the light passed the fingerprint recognition probe and the reference mirror, wherein the fingerprint recognition probe may utilize a low coherence phenomenon of the light provided from the light source to recognize an external fingerprint layer of the fingerprint or an internal fingerprint layer of the fingerprint. According to the embodiment of the present invention, even if the external fingerprint layer of the layers of the fingerprint has been destroyed, the present invention can obtain information on the internal fingerprint layer based on the low coherence interferometer, thereby accurately confirm the identity of the person to be measured.
Abstract:
본 발명의 실시예에 따른 편광민감 광간섭성 단층 촬영 시스템은, 광원; 및 광원과 편광유지 광섬유에 의해 연결되며, 광원으로부터 발생된 광을 S 편광 및 P 편광으로 나누는 편광 분리기;를 포함하며, S 편광 및 P 편광을 측정 대상체에 입사하고 되돌아오는 광을 검출하여 편광 상태에 따라 서로 다른 영상 정보를 획득할 수 있다. 본 발명의 실시예에 따르면, 광원과 연결된 편광 분리기를 사용하여 S 편광과 P 편광을 먼저 나누고 측정 대상체에 각각 입사하여 되돌아오는 신호를 획득하여 측정 대상체의 편광 특성을 얻을 수 있다.
Abstract:
본 발명의 실시예에 따른 라만 기반 장거리 센싱 시스템은, 레이저 출력(laser output)과 리지듀얼 펌프(residual pump)를 포함하는 광을 발생시키는 라만 기반 파장 가변 레이저; 및 라만 기반 파장 가변 레이저에서 1차 광 증폭된 후 남은 리지듀얼 펌프를 재사용하여 2차 광 증폭시키는 광 증폭부;를 포함할 수 있다. 본 실시예에 따르면, 라만 기반 파장 가변 레이저로부터 발생된 리지듀얼 펌프(residual pump)를 재사용하여 출력 파워를 개선할 수 있고 아울러 광 증폭 효율까지 개선시킬 수 있다.
Abstract:
A Raman-based long-distance sensing system according to the present invention may include a Raman-based wavelength swept laser which includes a laser output and a residual pump and generates light; and a light amplification part which secondarily amplifies the light by reusing the residual pump remaining when the Raman-based wavelength swept laser firstly amplifies the light. According to the present invention, the output power can be improved by reusing the residual pump generated from the Raman-based wavelength swept laser and light amplification efficiency can be improved as well.
Abstract:
An optical coherence tomography apparatus according to an embodiment of the present invention comprises: a light source for generating a beam; a split prism which splits the beam passing through the split prism; a first line beam forming lens which is posited on the path of the beam split by the split prism and converts the beam into a line beam; a scan unit which is located at the back of the line beam forming lens and sends back a line beam generated by scanning at least one side of an object to be inspected which is located at one side; and a photographing unit for obtaining the tomographic information of the object to be inspected by photographing the line beam which returns from the scan unit through the split prism. According to the embodiment of the present invention, the object to be inspected is quickly scanned by converting the beam from the light source into a line beam, therefore, a time required for optical coherence tomography can be reduced compared to an existing optical coherence tomography time and a precise inspection can be performed.
Abstract:
PURPOSE: An optical device and a laser-based image system including the same are provided to change the phase of a laser light source to remove speckle noise. CONSTITUTION: An optical device for removing speckle noise(120) is formed on an optical fiber(111) connected to a light source generator. The optical device includes a non-linear material(121) and an electrode plate(130). The non-linear material having a refractive index changes the phase of a laser source.
Abstract:
헤드업 디스플레이 장치가 제공된다. 차량의 윈드실드로 광을 투영시키는 헤드업 디스플레이 장치는 상기 광을 제공하는 광원 및 상기 광원에서 제공된 상기 광을 제1 광 경로 및 제2 광 경로로 분할하는 빔 스플리터을 포함하되, 상기 제1 광 경로로 진행하는 상기 광은 상기 윈드실드의 영역 중 운전자의 전방영역으로 투영되고, 상기 제2 광 경로로 진행하는 상기 광은 상기 윈드실드의 영역 중 보조자의 전방영역으로 투영되는 것을 포함한다.