• Title/Summary/Keyword: mirrors

검색결과 491건 처리시간 0.049초

색소레이저의 국산화 개발에 관한 연구 (Development of Homemade Dye Laser)

  • 오철한;박덕규;이성만
    • 대한전기학회논문지
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    • 제34권2호
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    • pp.56-62
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    • 1985
  • It is desirable to establish a fundamental basis of dye laser technology in korea. Except the special wavelength mirrors, all parts of the dye laser were assembled using domestically available materials and the interior technology. The characteristics of pumping light of Ar discharge tube, fluorescence light of Rhodamine 6G and output pulses of the homemade dye laser were investigated by means of CRO and spectroscopic analysis.

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EFFICIENTLY COMPUTING TORUS CHARTS IN LANDAU-GINZBURG MODELS OF COMPLETE INTERSECTIONS IN GRASSMANNIANS OF PLANES

  • Prince, Thomas
    • 대한수학회보
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    • 제54권5호
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    • pp.1719-1724
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    • 2017
  • In this note, companion to the paper [10], we describe an alternative method for finding Laurent polynomials mirror-dual to complete intersections in Grassmannians of planes, in the sense discussed in [10]. This calculation follows a general method for finding torus charts on Hori-Vafa mirrors to complete intersections in toric varieties, detailed in [5] generalising the method of [8].

자동차(自動車) 룸 밀러 진동에 대한 연구(硏究) (A Study on Vibration Analysis of Vehicle Rear-view Mirror)

  • 임석현
    • 한국자동차공학회논문집
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    • 제3권6호
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    • pp.1-7
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    • 1995
  • Vehicle has two kinds of mirrors to check the rear. Especially inner rear-view mirror(room mirror) is easy to vibrate. A vibration of vehicle inner rear-view mirror affects safe driving. This study presents both of analysis of cause of mirror vibration and resolution in order to improve that throughout analysis by elasticity theory, FEM, and test.

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인수분해된 광각 빔 전파기법 및 방향전환 거울 해석에의 응용 (A Factored Wide Angle Propagation Technique Applied to Turning Mirror Simulation)

  • Youngchul Chung
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 1996년도 추계학술대회 논문집
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    • pp.135-138
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    • 1996
  • A wide angle propagation techinque is formulated through an expansion of the Holmholtz operator followed by a Pade expansion and factorization of the resulting polynomials. Its accuracy is checked through the successful modeling of integrated waveguide turning mirrors, indicating that 6-th order polynomial can handle as large as 55$^{\circ}$tilt angle very accurately.

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Intracavity frequency doubling of a slab Nd:YAG laser pumped by high power diode laser array

  • Lee, Jong-Min;Moon, Hee-Jong;Yi, Jong-Hoon
    • Journal of the Optical Society of Korea
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    • 제2권1호
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    • pp.5-8
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    • 1998
  • A high power diode-array-pumped slab Nd:YAG laser is described. The resonator consists of three mirrors in folded geometry. The laser is operated in acousto-optic Q-switching mode and intracavity frequency doubling is tried. We demonstrate that the laser exhibits frequency doubling efficiency of ∼60% with a type I LBO crystal.

투사형 집적 영상 시스템의 개구율에 관한 연구 (Study about aperture ratio of projection-type integral imaging system)

  • 민성욱
    • 한국광학회:학술대회논문집
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    • 한국광학회 2008년도 동계학술발표회 논문집
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    • pp.81-82
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    • 2008
  • The projection-type integral imaging system using mirror array is studied at the viewpoint of the aperture ratio of system. The aperture ratio which is determined by the relation of the specifications of the projection lens and the elemental mirrors affects the viewing quality of integral imaging system. This factors play an important role in the system design.

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스위치-연산증폭기 신호처리 시스템 구현을 위한 새로운 1.2V class-AB push-pull 출력단 회로의 설계

  • 권오준;우선보;곽계달
    • 대한전자공학회:학술대회논문집
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    • 대한전자공학회 2006년도 하계종합학술대회
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    • pp.637-638
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    • 2006
  • A novel 1.2V class-AB output stage for the SW-OpAmp technique was presented. By using current mirrors and simple current extraction circuits, the proposed circuit boosts DM signal currents while eliminates CM ones to perform class-AB operation. Hspice simulation results verify the versatility of the proposed circuit technique.

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Image Processing에 의한 MEMS소자의 미세한 각도측정 (Angle Measurement of MEMS Devices Image Processing)

  • 고진환;김호성
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2000년도 하계학술대회 논문집 C
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    • pp.2198-2200
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    • 2000
  • This paper reports on the measurement of angle between micro mirror and substrate in. the Micro Optical Cross Connect(MOXC). MOXC consists of beam collimators and $N{\times}N$ micro mirrors that are fabricated by using MEMS technology. Using subpixel level image processing, it is possible to measure the angle with the resolution of 0.27$^{\circ}$.

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거울을 이용한 비접촉식 지문 센서 개발 (Development of Mirror-based touchless fingerprint sensor)

  • 최희승;최경택;김재희
    • 대한전자공학회:학술대회논문집
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    • 대한전자공학회 2007년도 하계종합학술대회 논문집
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    • pp.231-232
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    • 2007
  • This paper introduce a new touchless fingerprint sensor. Two mirrors are used to capture the side fingerprint images which cannot detectable using a single camera. We also propose the techniques which can solve the image contrast, nonuniform illumination, DOF(Depth of Field) problems. This new sensor leads to bringing new challenges in the field of fingerprint recognition.

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