VARIABLE OPTICAL ATTENUATOR

• Main Authors: SON DONG HOON, KIM KEO SIK, PARK SI WOONG, HEO YOUNG SOON, KIM KYEEUN, RYU JI HYOUNG, YEO CHAN IL, LEE DONGSOO, KANG HYUN SEO, KIM SUNG CHANG, PARK HYOUNGJUN, MIN GI HYEON
• Format: Patent
• Language: English; Korean
• Published: 24.05.2019
• Subjects: DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

A light variable attenuator comprises: an electrochromic device having reflection properties or a semi-transmission properties; a lens for converting input light into focused light or collimation light, and making the light enter the electrochromic device; and an output part for outputting the light reflected from the electrochromic device. The electrochromic device can control an amount of reflection and transmission of the input light in accordance with a constituent material of the electrochromic device and a voltage applied to the electrochromic device, thereby attenuating the amount of light of the input light. 광 가변 감쇠기는 반사 특성 또는 반투과 특성을 가지는 일렉트로크로믹 디바이스; 입력 광을 집속 광 또는 콜리메이션 광으로 변화시켜 상기 일렉트로크로믹 디바이스로 입사시키는 렌즈; 및 상기 일렉트로크로믹 디바이스에서 반사된 광을 출력하는 출력부를 포함하고, 상기 일렉트로크로믹 디바이스는, 상기 일렉트로크로믹 디바이스의 구성 물질 및 상기 일렉트로크로믹 디바이스에 인가되는 전압에 따라 상기 입력 광의 반사율 및 투과율을 제어하여 상기 입력 광의 광량을 감쇠할 수 있다.