摘要:
A high spatial and time resolution measuring apparatus for optically measuring a fine area in an object to be measured, the apparatus comprising a stage for mounting a specimen thereon, a light source for generating a first light, a first optical system for leading the first light from the light source to the specimen, an objective lens for magnifying an image of a second light from the specimen, a second optical system for imaging a part of the image in a form of a slit, a streak tube having a photocathode at a position of image formation of the second optical system for receiving the part of the image and forming a streak image thereof, a housing for shielding the first optical system, the objective lens and the second optical system from stray light.
摘要:
A streak camera device comprising plural streak tubes generating a plurality of tube outputs for simultaneous measurement of a plurality of separate characteristics of a light emissions, the plural streak tubes forming electron beams in response to the light emission; a deflecting signal generating device including only a single deflecting signal generating device generating a deflection output for simultaneously deflecting the beams of the plural streak tubes; and a device for recording the tube outputs of the streak tubes.
摘要:
A liquid crystal device includes a first substrate, a second substrate, a liquid crystal layer disposed between the first substrate and the second substrate, a first alignment layer disposed on the liquid crystal layer side of the first substrate, and a second alignment layer disposed on the liquid crystal layer side of the second substrate. At least one of the first alignment layer and the second alignment layer is made of an inorganic porous film having pores exposed at its surface and grooves to control the orientation of the liquid crystal layer.
摘要:
Disclosed herein is a liquid crystal device which includes first and second substrates which face each other and a liquid crystal layer interposed between the first substrate and the second substrate, and transitions an alignment state of liquid crystal molecules of the liquid crystal layer from a spray alignment to a bend alignment to perform display or optical modulation, the liquid crystal device including: a protrusion which is provided on at least one of the first substrate and the second substrate at the side of the liquid crystal layer and has a concave portion; and an alignment film which is provided on the surfaces of the first substrate and the second substrate at the side of the liquid crystal layer so as to cover the surface of the protrusion including the concave portion.
摘要:
A method characterized by making modulated light having a predetermined modulation frequency component, incident to a scattering medium, receiving the modulated light having propagated inside the scattering medium to acquire measurement signals, detecting signals of the foregoing modulation frequency component from the measurement signals, obtaining amplitudes and inclinations of phase against modulation angular frequency, of the signals of the foregoing modulation frequency component, calculating a difference between absorption coefficients being primary information, based on a predetermined relation among the amplitudes, the inclinations of phase against modulation angular frequency and the difference between absorption coefficients, and calculating a difference of concentration of an absorptive constituent being secondary information, based on the difference between absorption coefficients.
摘要:
A measuring apparatus of absorption information of scattering medium, comprising a light source for generating pulsed light, a light incidence section for making the pulsed light incident to a scattering medium, a light receiving section for receiving the light having propagated inside the measured object, a signal detecting section for temporally cutting a portion out of a light signal obtained by the light receiving section to acquire a measurement signal corresponding to the cut-out signal, a first arithmetic section for performing a measurement for acquiring measurement signals respectively at plural different timings or the like and for deriving a time integration value and a mean optical pathlength for each of the plural measurement signals obtained, and a second arithmetic section for calculating a change amount of concentration of an absorptive constituent, based on a predetermined relation among plural time integration values, plural mean optical pathlengths, an absorption coefficient per unit concentration of the absorptive constituent, and the change amount of concentration of the absorptive constituent.
摘要:
An apparatus and method are provided for measuring a scattering medium containing a light absorbing substance. The apparatus includes a light source; a photodetector; a gate voltage applying circuit for applying gate voltage pulses to the photodetector at a plurality of detection timings in order to generate the photodetector output light detection signals corresponding to the intensity of the light during periods of application of the pulses; and a signal processing unit for obtaining signal intensities during the periods and calculating internal information of the scattering medium based on the signal intensities.
摘要:
Measuring scattering and absorption properties of a scattering medium according to the following: (a) causing pulsed measuring light having a predetermined wavelength to enter the scattering medium; (b) performing time-resolved measurement of the measuring light having diffusively propagated in the scattering medium at light detection positions corresponding to a plurality of combinations, each comprising a light incidence position on the scattering medium in the first step and a light detection position on the scattering medium where the measuring light entered the scattering medium in the first step and a light detection position on the scattering medium where the measuring light is detected, having different incidence-detection distances between the light incidence position and the light detection position; (c) calculating a plurality of mean optical pathlengths of the measuring light corresponding to the plurality of incidence-detection distances, based on results of the time-resolved measurement measured in the second step; and (d) calculating a scattering coefficient and an absorption coefficient in the scattering medium, based on a plurality of simultaneous relations consisting of calculation values of the plurality of mean optical pathlengths corresponding to the incidence-detection distances, calculated in the third step, and a theoretical equation of the mean optical pathlengths derived in correspondence to light diffusion properties comprising a scattering property and an absorption property in diffusive propagation paths in the scattering medium.
摘要:
An method of positioning an E-O probe applied to an apparatus for the measurement of voltage. In the first step, the relative position of the E-O probe against the magnifying optical system in the first condition of being focused the magnifying optical system on the base of the E-O probe, and the focal point difference between the focal plane of the magnifying optical system in the second condition that the E-O probe is substantially out of the optical path for observation of the surface of the device and the focal plane in the first condition are stored. The relative position and the focal point difference are fixed in the apparatus for the measurement of voltage regardless of the device to be measured. Next, in the second step, the focus of the magnifying optical system is adjusted to the observation position of the surface of the device in the second condition, and then in the third step, the magnifying optical system, the E-O probe, and the probe stage are separated from the device by the focal point difference stored in the first step by the Z-axis stage, and in the fourth step, the E-O probe is moved to the relative position of the E-O probe stored in the first step relative to the magnifying optical system by the probe stage.
摘要:
A novel piperidine derivative is defined by the formula (I), including a salt thereof, ##STR1## wherein R.sup.1 denotes anthraquinone, X denotes a group of the formula --(CH.sub.2).sub.n --, a group of the formula --O(CH.sub.2).sub.n --, a group of the formula --S(CH.sub.2).sub.n --, a group of the formula --NH(CH.sub.2).sub.n --, a group of the formula --SO.sub.2 NH(CH.sub.2).sub.n --, a group of the formula ##STR2## a group of the formula ##STR3## a group of the formula ##STR4## a group of the formula --CH.sub.2 NH(CH.sub.2).sub.n --, a group of the formula ##STR5## (in all the above formulas, n is an integer of 1 through 7 and R.sup.3 represents a lower alkyl group or a benzyl group), a group of the formula ##STR6## a group of the formula ##STR7## a group of the formula --O--CH.sub.2 CH.sub.2 CH.dbd. or a group of the formula ##STR8## the ring A denotes a group of the formula ##STR9## a group of the formula ##STR10## a group of the formula ##STR11## or a group of the formula ##STR12##