Abstract:
PROBLEM TO BE SOLVED: To enable highly accurate estimation of a spectrum of a spectral reflection ratio even using a multiband image having a smaller number of bands.SOLUTION: A parameter generation method includes: measuring spectral distribution of plural color chips with a spectrometer (S100); setting an initial value to the band-instructing data of a multi-band camera (S120); calculating a camera output signal on the basis of the spectral sensitivity of the camera when determined by the band-instructing data and the spectral characteristic of light from each color chip (S130); calculating a candidate value of a spectral estimation parameter from the spectral distribution for each color chip and the camera output signal (S140); sequentially changing the band-instructing data from the initial value so that an evaluation function defined by the spectral distribution for each color chip and a spectral estimation value calculated from the candidate value of a spectral estimation parameter and the camera output signal approaches a target value (S170); and obtaining a spectral estimation parameter when the evaluation function has reached the target value (S160) and storing the spectral estimation parameter (S180).
Abstract:
PROBLEM TO BE SOLVED: To observe a momentary light spectrum in measuring the spectrum of measuring light repetitively generated in a cycle of one frame. SOLUTION: This light spectrum analyzer is characterized by being equipped with: an optical part 130 spectrally diffracting and wavelength-sweeping the measuring light inputted thereinto, and converting it into an electric signal to output it; a control part 101 for controlling the wavelength-sweeping of the optical part to output sampling clocks of a cycle deviating from the repetition cycle of the light for each of wavelengths of the wavelength sweeping; and a measurement part 140 for sequence-sampling the electric signal from the optical part for each of the sampling clocks. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To efficiently detect fluorescence emitted from a sample, and to detect a plurality of wavelengths of fluorescences concurrently by concurrent irradiation with a plurality of wavelengths of excitation lights. SOLUTION: This laser scanning fluorescence observation device 1 is provided with a laser light source 2 having laser beams of the plurality of wavelengths, a spectrograph 5 for dispersing spectrally the laser beams into every of the wavelengths, a convergence lens 6 for converging the spectrally dispersed laser beam, a wavelength selective reflection device 7 provided integrally with a plurality of reflection parts arranged with a prescribed space along a spectral dispersion direction in the vicinity of a focal point position thereof to reflect respectively the laser beams different in the wavelengths, and a transmission part arranged adjacently thereto, a diffraction grating 13 for associating the reflected laser beams, a scanning part 24 for scanning two-dimensionally the associated laser beam, an objective optical system 21 for converging the scanned laser beam in a sample A, and a photodetector 12 for detecting the fluorescences returned from the sample A. A width dimension along a spectral direction is thinner than that of the transmission part, in each of the reflection parts of the wavelength selective reflection device 7. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PURPOSE:To perform the color separation of the whole incident rays in real time by a system wherein angles from the normal line of a wavefront of sound waves on a light emission plane of an acoustooptic filter utilizing distant-axis anisotropic Bragg diffraction are made different from an angle on an incident plane and an electric signal of white noise is impressed on the rays. CONSTITUTION:An acoustooptic filter utilizing distant-axis anisotropic Bragg diffraction is employed for an acoustooptic filter 1. Electric signals from a white-noise generator 3 are amplified by an amplifier 4, transduced into an ultrasonic signal by a transducer 2, and propagated through the filter 1. Incident rays lambdai are diffracted and emitted in specified directions in which the frequencies of ultrasonic waves correspond to the wavelengths of the rays in the ratio of 1:1, respectively, and are taken out of an image sensor 5 as electric signals corresponding to the wavelengths of the rays. The angles from the normal line of a wavefront of sound waves on a light emission plane are made different from the angle on an incident plane to magnify the diffusion of the rays. Thereby the rays in the wide range of wavelengths can be diffused simultaneously with high resolution.
Abstract:
An improved solid-state laser for generating 193 nm light is described. This laser uses the 6 th harmonic of a fundamental wavelength near 1160 nm to generate the 193 nm light. The laser mixes the 1160 nm fundamental wavelength with the 5 th harmonic, which is at a wavelength of approximately 232 nm. By proper selection of non-linear media, such mixing can be achieved by nearly non-critical phase matching. This mixing results in high conversion efficiency, good stability, and high reliability.