Abstract:
본 발명은 비편광 적외 반사율 분해를 통한 황사탐지 시스템에 관한 것이다. 특히 황사가 발생한 임의 해상 지역에서 정지궤도 위성의 적외선 채널 11㎛, 12㎛으로 각각 관측한 밝기 온도에 대한 위성영상 자료를 이용한다. 더욱 상세하게 설명하면, 인공위성에서 관측되는 휘도 온도와 해수면 온도의 비율로써 방출율을 구하고, 그 방출율을 반사도로 변환한 다음에, 전자기파의 편광 성질을 이용하여 두 개의 반사도(Reflectivity)를 계산하고, 황사의 성분과 수증기나 구름의 성분이 다르다는 사실을 이용하여, 황사를 탐지하는 방법이다. 본 발명에 따르면, 이 분해된 두 반사도를 이용하고, 물질의 고유 성질인 굴절 지수가 황사와 수증기가 다르다는 것을 이용하면 바다 위의 황사를 탐지할 수 있다.
Abstract in simplified Chinese:评估设备(1)系使测光件(42)旋转成测光件(42)之透射轴之方位相对偏光件(32)之透射轴成为90度�3度之倾斜角度,以各条件由摄影机(44)拍摄晶圆(10)之正反射像,影像处理部(50),系根据借由摄影机(44)拍摄之两片晶圆(10)之影像,评估反复图案之形状以检测剂量不良及聚焦不良。
Abstract:
PROBLEM TO BE SOLVED: To provide an optical tomographic image forming system capable of achieving size reduction and cost reduction attendant thereon, and a detection unit used therein.SOLUTION: An optical tomographic image forming system 100 includes a detection unit 200 which comprises an optical polarization element 250 and detects polarization components at each wavelength while an interference polarized beam generated by causing an object reflected light beam and a reference reflected light beam to interfere with each other is separated at each wavelength. The optical polarization element 250 is configured such that the separated interference polarized beams at respective wavelengths are incident in parallel thereon in order of wavelength, and configured to have a birefringence characteristic having a first refractive index and a second refractive index that are provided with a predetermined condition, and while transmitting the incident interference polarized beam at each wavelength therethrough, to separate the interference polarized beam into polarization components and emit the separated polarization components at each wavelength in the same direction along different optical axes.
Abstract:
PROBLEM TO BE SOLVED: To provide an ellipsometer, a polarized light measuring device, and a polarization status measuring technique capable of measuring polarization at higher speed and more effectively. SOLUTION: The polarization measuring device is equipped with a circular diffraction grating 140 that diffracts incident light so as to obtain polarization status of the light and a detector 150, displaying polarization status of the light by receiving the light diffracted with a circular diffraction grating 140. The circular diffraction grating 140 includes a grid formed by digging a fixed trench and adjusts the transmissivity, according to polarization direction of light by modulating spacing of the grid and depth of the trench. The circular diffraction grating 140 diffracts the incidence light in all directions. The detector 150 receives the diffracted light to detect it two-dimensionally. On the two-dimensional images detected with the detector 150, data can be directly extracted, measuring the degree of polarization of the incident light. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a near field rotatory polarization measuring instrument having a spatial resolution of light diffraction limit or more. SOLUTION: This near field rotatory polarization measuring instrument 10 is provided with: a near field probe 14 having in its tip an opening smaller than a wavelength of light used in measurement, and for emitting a near field light of linear polarization from the opening to irradiate a sample with the near field light; a detecting means 22 for detecting the light transmitted through the sample; an analyzer 18 provided in a preceding stage of the detecting means; and an analyzer rotating means 20 for rotating the analyzer around an optical axis as the center, and for changing an angle of a transmission axis thereof, and measures an angle of rotation of the sample by rotating the analyzer with the analyzer rotating means. COPYRIGHT: (C)2007,JPO&INPIT