Abstract:
A spectrograph (100) as disclosed includes a housing (102), wherein a wall (104) of the housing includes first, second and third openings (106, 108, 110), an entrance slit (112) located at the first opening (106) and configured to direct light along a first light path portion (LP1) in the interior of the housing, a dispersive element (114) located at the second opening (108) and configured to receive light from the entrance slit along the first light path portion and direct light along a second light path portion (LP2) in the interior of the housing, a detector (116) located at the third opening (110) and configured to receive light from the dispersive element along the second light path portion. The detector can include first and second groups of light-sensitive regions (118, 120). A cover (105) can be positioned to separate the first group of light-sensitive regions from the light path, the second group of light-sensitive regions being exposed to the light path.
Abstract:
A targeting system for a spectrophotometer includes a plurality of fiber channels, including at least one measurement channel and at least one illumination channel. A slit assembly includes a translucent layer disposed adjacent the plurality of fiber channels, and reflective portion disposed adjacent the translucent layer. Each fiber channel includes a first end, the first end offset from the reflective portion of the slit assembly to allow light transfer from one fiber channel to an adjacent fiber channel. A light source is in optical communication with the at least one illumination channel. A sample plane is in optical communication with a second end of the measurement channel. The system is configured such that light is transmitted from the light source, through the at least one illumination channel, reflected off the slit assembly, transmitted through the measurement channel, and onto the sample plane.
Abstract:
본 발명은 측각 분광복사계 및 그 측정 방법을 제공한다. 측각 분광복사계는 광원축을 따라 자전 운동하는 광원; 상기 광원축에 수직한 공전축에 대하여 상기 광원을 중심으로 일정한 반경을 가지고 공전 운동하고 상기 광원을 바라보는 방향에 형성된 입구를 포함하는 제1 적분구; 상기 제1 적분구를 통하여 수신된 광의 광량을 공전축의 회전량에 따라 변조하는 광량 변조부; 및 상기 광량 변조부의 출력광을 파장별로 측정하는 검출부를 포함한다.
Abstract:
Aspects of the present disclosure include methods and systems for assaying a sample for an analyte. Methods according to certain embodiments include illuminating a sample with a slit-shaped beam of light, detecting light transmitted through the sample, determining absorbance of the transmitted light at one or more wavelengths and calculating concentration of the analyte based on the absorbance to assay the sample for the analyte. Systems for practicing the subject methods are also described.
Abstract:
A spectroscopic imaging apparatus collects an optical signal from a sample that is spatially limited in a first direction, but maintains its spatial integrity in a perpendicular direction. The signal is spread spectrally in the first direction to produce a two-dimensional output with a spatial direction and a wavelength spectrum direction. Components are located in conjugate space, and a kinetic mirror may be used to scan the optical signal along the spatially limited direction, thus providing a series of spatio-spectral images each corresponding to a different sample portion. The system may use a line of pump light to generate a line-shaped output signal, and pump light may counter-propagate with the optical signal. A broader optical signal may also be limited to a line shape by a spatially restrictive filter. The design of the system allows it to be compact and inexpensive.
Abstract:
A hyperspectral imaging system (100a) and a method are described herein for providing a hyperspectral image of an area of a remote object (e.g., scene of interest (104)). In one aspect, the hyperspectral imaging system includes at least one optic (106), a rotatable disk (202) which has at least one spiral slit (204) formed therein, a spectrometer (110), a two-dimensional image sensor (112), and a controller (114). In another aspect, the hyperspectral imaging system includes at least one optic, a rotatable disk which has multiple straight slits formed therein, a spectrometer, a two- dimensional image sensor, and a controller. In yet another aspect, the hyperspectral imaging system includes at least one optic, a rotatable drum (which has a plurality of slits formed on the outer surface thereof and a fold mirror located therein), a spectrometer, a two-dimensional image sensor, and a controller.
Abstract:
A hyperspectral imaging system and method are described herein for providing a hyperspectral image of an area of a remote object (e.g., scene of interest). The hyperspectral imaging system includes at least one optic, a scannable slit mechanism, a spectrometer, a two-dimensional image sensor, and a controller. The scannable slit mechanism can be a micro-electromechanical system spatial light modulator (MEMS SLM), a diffractive Micro-Opto-Electro-Mechanical Systems (MOEMS) spatial light modulator (SLM), a digital light processing (DLP) system, a liquid crystal display, a rotating drum with at least one slit formed therein, or a rotating disk with at least one slit formed therein.