• 한국고분자학회:학술대회논문집
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• 한국고분자학회 2006년도 IUPAC International Symposium on Advanced Polymers for Emerging Technologies
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• pp.148-149
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• 2006

TFT-LCD BLU has been remarkably developed for a recent few years as TFT-LCD market is increased. Recently new BLU technologies and components are developed as more aggressively than before since TFT-LCD panel requires higher quality and resolution. Especially Samsung Electronics and LG Philips LCD of Korea are major LCD panel makers and the major optical materials of LCD BLU and panel for Samsung Electronics have been supplied by Samsung Cheil Industries. In this presentation introduction to main components of LCD BLU will be investigated details. Also characteristics and applications of optical polymers such as PMMA, PET etc for LCD display will be included and finally recent trends in optical materials for LCD BLU will be shown briefly.

• 한국통신학회논문지
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• 제9권4호
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• pp.179-183
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• 1984

N개의 문자를 인식하기 위해 $log_2$N번의 이진측정만을 요구하는 주요문자형태(principal components)를 컴퓨터에 의해 계산, 제작하였고 비간접성 광상관기(incoherent optical correlator)를 구성하여 상관계수를 측정하였다. 종래의 최적 필터를 사용한 애널로그 상관계수 측정법보다 뛰어난 식별능력을 보였다.

• 한국광학회:학술대회논문집
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• 한국광학회 2000년도 제11회 정기총회 및 00년 동계학술발표회 논문집
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• pp.92-93
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• 2000

WDM전송망은 지금까지 주로 장거리 기간망에 점대점 형태로 적용되어 왔다. 그러나 최근 예측을 훨씬 상회하는 인터넷 수요의 폭발적 증가로 인하여 매트로 네트워크 및 가입자영역에 이르기까지 WDM전송망 구축의 필요성이 대두되고 있다. WDM네트워크 적용영역을 구분하면 아래와 같다. (중략)

• 한국광학회:학술대회논문집
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• 한국광학회 2006년도 하계학술발표회 논문집
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• pp.451-452
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• 2006

• 한국생물공학회:학술대회논문집
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• 한국생물공학회 2000년도 추계학술발표대회 및 bio-venture fair
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• pp.105-110
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• 2000

Biosensors consist principally of two basic components, receptor and transducer. The transducer part of the sensor serves the signal transfer from the output domain of the recognition system. Optical method of transducer have many benefits, based on phenomena like emission and absorption. This paper will review the methode of optical transduction in brief and out some new development.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2008년도 International Meeting on Information Display
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• pp.895-897
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• 2008

ZnO films were fabricated using rf-magnetron sputter deposition process with different $N_2$ ambient. N-content in N-doped ZnO films was less than 1%. The wavelength of the highest intensity PL peak of N-doped ZnO was shifted to higher wavelength with increasing $N_2$ flow rate in the deposition ambient. These results indicated that the optical property of ZnO was significantly affected by the defect level created by doping with a very small amount of N.

• Journal of the Optical Society of Korea
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• 제11권1호
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• pp.10-17
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• 2007

We need two operation modes to obtain the complex hologram without bias and the conjugate image in the modified triangular interferometer (MTI). To solve the problem, we proposed the optimized MTI with one wave plate, which can obtain cosine and sine functions by the combination of one wave plate and one linear polarizer. In the extraction of phase term using the combination of polarization components, the phase error occurs, and we analyzed such potential phase errors in the optimized MTI.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2002년도 춘계학술대회 논문집
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• pp.191-194
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• 2002

In optical pick-up, optical components such as objective lens, collimator, mirror, laser diode and photo diode are mounted on the pick-up base. These components must keep their original position during operation for proper transmittance of information from laser diode to optical disk and back to photo diode. However, micro thermal deformation of pick-up base which is induced by thermal environment during operation can deteriorate the performance of optical pick-up. Therefore, it is important to measure and analyze the thermal deformation behavior of pick-up base under thermal environment. In the present study, a measurement system using holographic interferometry was designed to measure micro thermal deformation of pick up base. The measurement system was verified by using the deformation of cantilever with prescribed motion actuated by PZT with 1 nm resolution. Interferometric measurement was compared quantitatively with that induced by PZT actuator. Finally, micro thermal deformation of pick-up base under actual thermal environment was measured using the present holographic interferometry and the results were analysed.

• 한국광학회지
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• 제7권4호
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• pp.333-340
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• 1996

기존 퓨리에 변환의 일반화된 형식인 분수차 퓨리에 변환을 평판집적 광학계로 구현하였다. 구현된 평판집적 광학계는 동일한 2차원 입력패턴에 대해 서로 다른 분수차를 갖는 4개의 FRT의 결과를 얻을 수 있는 구조를 가지며 모든 부품들은 레이저 빔 묘화장치를 이용하여 하나의 유리판에 동시에 제작되었다. FRT 실험결과를 계산치와 비교 분석함으로써 평판집적 광학계가 기존의 자유공간 광학계가 갖는 3차원적 광신호 전달 특성과 이에 따른 높은 신호의 공간대역폭을 가지고 매우 정확한 FTR를 수행할 수 있음을 검증하였다.

• 한국정밀공학회지
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• 제21권5호
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• pp.38-45
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• 2004

As optical communication is being substituted for telecommunication, the demand of a large variety of fiber optic components is increasing. V-groove substrates, one of the module components, are used to connect optical fibers to optical planar circuits and to arrange fibers. Their applications are multi-channel optical connectors and optical waveguide fiber coupling, etc. Because these substrates are a critical part of the splitter in a multiplexer and a multi fiber connector, precise and reliable fabrication process is required. For precisely aligning core pitch between fibers, machined core pitch tolerance should be within sub-microns. Therefore, these are generally produced by state-of-the-art micro-fabrication like MEMS. However, most of the process equipment is very expensive. It is also difficult to change the process line for custom designs to meet specific requirements using various materials. For various design specifications such as different values of the V angle and low-priced process, the fabrication method should be flexible and low cost. To achieve this goal, we have suggested a miniaturized machine tool with high accuracy positioning system. Through this study, it is shown that this cutting process can be applied to produce V-groove subtracts. We also show the possibility of using a miniaturized machining system for producing small parts.