• The Optical Journal
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• v.13 no.3 s.73
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• pp.28-30
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• 2001

국내 전시회가 짧은 역사에 비해 가능성만큼은 높이 평가할만 하고, 어느 정도 기반을 잡아나간다면 국제적인 전시회로의 대 도약이 얼마든지 가능하다고 업계 관계자들은 말한다.

• The Optical Journal
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• s.147
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• pp.55-55
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• 2013

모바일 입력솔루션 전문업체 크루셜텍이 에어리어(Area) 방식 지문인식(BTP, Biometric TrackPad) 솔루션을 개발했다. 에어리어 방식은 손가락을 훑어 내리며 지문 정보를 합성해 분석하는 스와이프 방식과 달리 일정 영역에 손가락을 대면 지문이 읽혀 상대적으로 인식률이 높은 것이 장점이다.

• Proceedings of the Optical Society of Korea Conference
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• 2001.08a
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• pp.18-19
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• 2001

• Proceedings of the Optical Society of Korea Conference
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• 2006.02a
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• pp.357-358
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• 2006

• Korean Journal of Remote Sensing
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• v.14 no.4
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• pp.366-375
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• 1998

Optical characteristics of the yellow sand and their influences on the ocean color remote sensing has been studied using ocean color sensor SeaWiFS measurements. Two cases of April 18 and April 25, 1998, representing yellow sand and background aerosol, are selected for emphasizing the impact of high aerosol concentration on the ocean color remote sensing. It was shown that NASA's standard atmospheric correction algorithm treats yellow sand area as either too high radiance or cloud area, in which ocean color information is not generated. Optical thickness of yellow sand arrived over the East Asian sea waters in April 18 indicates that there are two groups loaded with relatively homogeneous yellow sand, i.e.: heavy yellow sand area with optical thickness peak around 0.8 and mild area with about 0.4, which are consistent with ground observations. The movement of the yellow sand area obtained from surface weather maps and backward trajectory analysis manifest the notion that the weak yellow sand area was originated from the outer region of the dust storm. It is also noted that high optical thickness associated with the yellow sand is significantly different from what we may observe from background aerosol, which is about 0.2. These characteristics allow us to determine the yellow sand area with an aid of atmospheric correction parameter. Results indicate that the yellow sand area can be determined by applying the features revealed in scattergrams of atmospheric correction parameter and optical thickness.

• Proceedings of the Optical Society of Korea Conference
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• 2002.07a
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• pp.252-253
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• 2002

원적외선 영역에서 혈중성분들의 분광 특성이 존재함이 확인되면서 이 영역의 빛을 이용한 혈중 성분의 정량 분석을 통한 진단기술 개발이 활발히 진행되고 있다1). 특히 원적외선 영역에서 특정 파장에서의 반응성을 이용한 여러 방법들 중 photo-Acoustic을 이용한 방법이 여러 가지로 연구되어지고 있다. (2) 현재 수용액 상태의 혈중 성분들의 원적외선 분광 특성을 연구하였으며, 이를 이용한 혼합 성분들의 흡수 spectrum 정량-정성 분석이 가능하며, 이러한 특성을 이용하여 non-invasive로 이용 가능한 분광법을 연구 진행 중이다. (중략)

• Proceedings of the Optical Society of Korea Conference
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• 2003.07a
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• pp.240-241
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• 2003

경계면 근처에서의 에바네슨트파의 상호작용은 입사, 반사 및 굴절된 평면파의 삼중모드로 설명한다. 경계에서 굴절률이 낮은 영역에 위치한 DCM 색소분자에 의한 자발방출은 굴절률이 높은 영역에서 입사된 삼중모드와 굴절률이 낮은 영역에서 입사한 삼중모드와 상호작용을 하며, 광 측정기에서는 이 두 모드의 선형결합을 보게된다. 자발방출에 대한 실험결과는 이러한 이론을 뒷받침 해준다. (중략)

• The Optical Journal
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• s.129
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• pp.14-16
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• 2010

자동차 헤드램프용 비구면 렌즈를 비롯하여 첨단IT기종에 적용되는 다양한 특수 렌즈 및 부품을 전문생산하고 있는 아주광학(대표 최상관, www.ajuoptical.co.kr)은 신기술에 대한 끊임없는 도전의지와 국산화개발 노력을 통해 화려한 변신을 추구하는 업체이다. 내수와 수출을 50:50으로 균형 있게 갖고 가고 있으며 최근에는 독자적인 LED조명등을 개발하여 발명특허를 출원하고 계속해서 사업영역을 확대해 나가고 있다.

• Journal of IKEEE
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• v.26 no.3
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• pp.430-436
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• 2022

In this paper, we propose an intelligent camera for multiple body temperature detection. The proposed camera is composed of optical(4056*3040) and thermal(640*480), which detects abnormal symptoms by analyzing a person's facial expression and body temperature from the acquired image. The optical and thermal imaging cameras are operated simultaneously and detect an object in the optical image, in which the facial region and expression analysis are calculated from the object. Additionally, the calculated coordinate values from the optical image facial region are applied to the thermal image, also the maximum temperature is measured from the region and displayed on the screen. Abnormal symptom detection is determined by using the analyzed three facial expressions(neutral, happy, sadness) and body temperature values. In order to evaluate the performance of the proposed camera, the optical image processing part is tested on Caltech, WIDER FACE, and CK+ datasets for three algorithms(object detection, facial region detection, and expression analysis). Experimental results have shown 91%, 91%, and 84% accuracy scores each.

• Journal of the Korea Computer Industry Society
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• v.2 no.4
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• pp.565-572
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• 2001

At the most recent years, laser medical instruments, laser applications and laser nuclear fusion need strong visible light and ultraviolet rays. Nonlinear optical devices, such as harmonic generators and parametric oscillators, provide a means of extending the frequency range of available laser sources. Frequency conversion is a useful technique for extending the utility of high-power lasers. It utilizes the nonlinear optical response of an optical medium in intense radiation fields to generate new frequencies. These progresses have been used to generate high-power radiation in all spectral regions, from the ultraviolet to the far infrared. Optical parametric oscillators and amplifiers generate two waves of lower frequency They are capable of generating a range of wavelengths from a single frequency source, in some cases spanning the entire visible and near infrared regions. Consequently, in order to obtain the green light, the pulsed Nd:YAG laser using multiple-mesh PFN(Pulsed Forming Network) method with Nonlinear optical device was adopted. We compared the current pulseshapes with the laser output energy, and conversion efficiency.