Abstract:
A method and apparatus for the spectrochemical analysis of a sample in which a solid state array detector (82) is used to detect radiation (62) of spectrochemical interest. The invention involves the use of a shutter (72) adjacent the entrance aperture (70) of a polychromator (74-80) to expose the detector (82) to the radiation (62) for varying lengths of time whereby for short duration exposure times charge accumulation in elements (i.e. pixels) of the detector (82) due to high intensity components of the radiation is limited and for longer exposure times charge accumulation in elements (pixels) of the detector (82) due to feeble intesity components of radiation (62) is increased. This ensures that each reading of the detector (82) includes at least one exposure in which the amount of charge accumulated at each wavelength of interest is neither too little or too great. The problems of feeble radiation components not being accurately measurable and of high intensity radiation components exceeding the charge carrying capacity of elements (pixels) of the detector (82) are thereby able to be avoided. An attenuator (90) may be placed between the radiation source (60) and the detector (82) to permit longer exposure times to be used for very high intensity radiation.
Abstract:
본 발명은 3색 광원을 이용하는 멀티플렉스 CARS 분광장치에 관한 것으로서 짧은 파장을 갖는 광대역 레이저 광원에 의한 펌프광과 상대적으로 긴 파장의 안정적인 레이저 광원에 의한 스톡스광의 조합에 의하여 측정 시료의 고유 분자진동에 다중 공명이 이룬 상태에서 상기 2개의 레이저 광원과는 별도의 탐색광 역할을 수행하는 좁은 선폭의 단파장(short-wavelength) 레이저 광을 상호작용시킴으로서 높은 분해능으로 파장성분 분리가 가능한 CARS 분광신호를 발생시키는 것을 특징으로 한다. 이에 따라 높은 분해능의 파장성분 분해가 불가능해지는 종래의 2색 광원 방식 멀티플렉스 CARS 분광법의 단점을 극복하도록 하여 CARS 스펙트럼 왜곡 문제를 극복할 수 있다. 분자진동 분광학, 자발 라만 산란, 간섭성 반스톡스 라만 산란, 레이저 현미경
Abstract:
본 발명은 라만 산란과 광산란(Light Scattering) 검출 시스템에 관한 것으로, 특히 라만 산란과 동적 광산란(Dynamic Light Scattering)의 동시 검출 장치 및 방법에 관한 것이다. 본 발명은 라만 산란과 동적 광산란의 동시 검출 장치로서, 라만 산란과 광산란의 동시 검출는 입사광을 시료에 입사하고 라만 산란과 광산란을 동시에 수집하기 위한 180° 구조의 라만 산란 측정 및 90° 구조의 광산란 측정을 이용한 검출수단; 및 상기 산란광 검출 수단과 연결되어 자기상관함수를 연산하여 입자의 크기 및 분포를 측정하고, 분자 구조를 측정하기 위한 컴퓨터를 포함한다. 이 장치는 나노 크기 이상의 물질의 크기와 이를 이루는 분자적 정보를 동시에 관찰할 수 있고 물질의 변화에 따른 분자적 환경의 변화와 그 크기 및 분포의 변화를 동반하는 현상을 관찰할 수 있어 나노 물질 및 단백질 항원-항체 관련 연구에 매우 유용하다. 라만 산란, 동적 광산란, 분광계, 동시측정
Abstract:
A simultaneous detection apparatus of Raman and light scattering is provided to analyze information on nano material and its molecules by simultaneously detecting Raman scattering and light scattering of one sample. A simultaneous detection apparatus of Raman and light scattering includes a laser generator(110), a Raman scattering detector(120), a dynamic light scattering detector, a spectrometer(140), and a computer(150). The laser generator generates a laser beam of 514.5nm Ar-ion as incident light. The incident light passes through a light condensing lens(112) and is reflected from a plane mirror(111) to enter the Raman scattering detector. The Raman scattering detector has a notch filter(121), an objective lens(123), and a first collecting lens(125). When the light reflected from the plane mirror enters a sample, the light is scattered while some of the light is collected again by the objective lens. Raman scattering light is transmitted to the spectrometer by the first collecting lens. The spectrometer detects the spectrum of the Raman scattering light. The dynamic light scattering detector, arranged at an angle of 90 degrees with respect to the incident light, has a second collecting lens(131), an iris(132), and a PMT(Photomultiplier Tube) detector(133). The computer is connected to the dynamic light scattering detectors, performs an autocorrelation function to measure the size and distribution of particles, and measures molecular structure.
Simplified title:具有体分佈式绕射光栅之具有波长-可调式分散总成的光学设备 OPTICAL DEVICES HAVING A WAVELENGTH-TUNABLE DISPERSION ASSEMBLY THAT HAS A VOLUME DISPERSIVE DIFFRACTION GRATING
Abstract in simplified Chinese:一种光谱仪(spectrometer)系具有:一照明辐射源,其具有复数个波长;一带通过滤器;一分佈式分光器,其配置于该照明辐射源的一光学路径中;一照明辐射退回过滤器;以及一摄谱仪(spectrograph),其配置于来自该照明辐射源的照明辐射所照明之一样本的一辐射路径中。可依据从照明辐射源之复数个光谱波长中所选出的一者来调整分佈式分光器、带通过滤器、照明辐射退回过滤器及摄谱仪。分佈式分光器将从照明辐射源之复数个光谱波长中所选出的一者导往一样本,并可在样本发散出的一测量光束中引导样本弹性散射及反射的辐射。不具弹性的散射光则大致不受影响地通过分佈式分光器并导往照明辐射退回过滤器及摄谱仪。
Abstract:
PROBLEM TO BE SOLVED: To make possible accurate detection of the position of a test object without inflicting thermal damage on the object and measurement of physical characteristics of signal light at a satisfactory S/N ratio.SOLUTION: An optical measuring apparatus using a photoelectric field amplifying device 10 provided with a gold-made fine convexo-concave structure 13 formed on the surface of a transparent base plate 11 irradiates at least a test object R with illuminating light L2 of 400 to 530 nm in wavelength, detects positional information on the test object R with an object position detecting device 140 arranged on the rear side of the photoelectric field amplifying device 10, and irradiates the detected position with exciting light L1 from an exciting light radiating device 110. Signal light Ls emitted from the test object R by irradiation with the exciting light L1 is detected from the rear face side of the transparent base plate 11.
Abstract:
PROBLEM TO BE SOLVED: To provide a technology for suppressing a decrease in the detection quantity of a light as a to-be-detected object, and sufficiently eliminating the light having a particular wavelength. SOLUTION: The incident light 20a is dispersed into respective wavelengths by a wavelength dispersion element 21. A wavelength limiting element 25 is disposed between the wavelength dispersion element 22 and a light detector 26 and has an optical characteristic dependent on the wavelength in an area into which a portion of a dispersion light 20b including a component light 20d having the particular wavelength enters. Thus, the component light 20d having the particular wavelength becomes restricted in incidence to the light detector 26. COPYRIGHT: (C)2011,JPO&INPIT