Abstract:
An instrument comprises a measured portion holding device (3) composed by using a negative image of a portion (10) to be measured. Therefore the variation of the measured value due to the uneven distribution of the component in the portion (10) is reduced, and the variation of the measured value due to the variation of the optical path length of the portion (10) caused by the variation of the shape of the portion (10) and to the variation of the blood flow volume caused by the variation of the contact pressure is reduced. Biological information or measurement parameters are recorded in a recording medium (11) worn on the measured portion holding device (3) dedicatedly used for an individual subject. As a result, biological information on the individual subject is prevented from being mistaken, thus realizing reproducible measurement.
Abstract:
PROBLEM TO BE SOLVED: To provide an inexpensive and miniaturizable light wave range finder having a wide measuring range from a short distance to a long distance. SOLUTION: This range finder is equipped with a light emitting element 11 for emitting measuring light 30; a floodlighting optical element 15 for collimating the measuring light 30; a light separation surface 181 for separating incident light into reflected light and transmitted light; a light reflection surface 182 for reflecting the measuring light 30 transmitted through the light separation surface 181 to reach a measuring object 21; a light receiving optical element 16 for receiving, condensing and emitting the first return light 321 formed by reflection of return light 32 by the light separation surface 181 and the second return light 322 formed by reflection of the return light 32 by the light reflection surface 182; and a light receiving element 12 for converting light condensed by the light receiving optical element 16 into an electric signal. The range finder has a characteristic wherein, when light is allowed to enter the light separation surface 181, the intensity of light reflected by the light separation surface 181 is less than the intensity of light reflected by the light reflection surface 182 after being transmitted through the light separation surface 181. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a spectroscopic imaging system which can pick up an image of the output light from a spectrometer reformed on an imaging surface of an imaging device with an influence of shading on the surface of the device reduced. SOLUTION: Incident light on the spectrometer 11 is diffracted at a grating 11b and its image is formed on a spectral imaging surface 14 by a concave mirror 11a. The center of the light beam of each wavelength diffracted by the spectrometer 11 is led to an imaging surface 12a of the imaging device by a relay optical system 13 consisting of a decenterd lens and the spectral image formed on the spectral imaging surface 14 is re-imaged on the surface 12a of a device 12. The image re-formed on the imaging surface 12a is picked up by the device 12. In this way, the influence of shading at the pickup surface 12a of the imaging device is reduced. COPYRIGHT: (C)2003,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a light wave range finder, having stable range detection precision over a wide range of measurement ranges. SOLUTION: This light wave range finder has a coaxial optical system, comprising a projection optical system and a light-receiving optical system, wherein a light projector 10, a light receiver 20 and a light-receiving lens 21 are disposed coaxially. The light-receiving lens 21 is formed such that each lens portion of the light-receiving lens 21 varies from the lens portion for close range detection (i.e., a lens portion for condensing reflected light from a detection point at a small measurement range onto the light receiver 20) to the lens portion for far range detection (i.e., a lens portion for condensing reflected light from a detection point at a large measurement range onto the light receiver 20), going from the detection optical axis toward the outside. Thereby toward the change of a received light amount condensed onto and detected by the light receiver 20 of the reflected light according to the measurement range can be suppressed. As a result, the light wave range finder having stable range detection accuracy over a large scope of measurement ranges is realized.
Abstract:
PROBLEM TO BE SOLVED: To provide an instrument for measuring the focal distance of an eye which is small and capable of measuring it in real time. SOLUTION: The instrument for measuring the focal distance of an eye 10 related with this embodiment is provided with an optical irradiation system 12 for irradiating an incident luminous flux I advancing in the direction of an x-axis and gradually varying in a diverging or focusing rate in the direction of a y-axis with respect to the direction of a z-axis, a cylindrical lens 14 arranged on the optical path of the luminous flux of the luminous flux I to collect the luminous flux I in the direction of the z-axis to project to the eye E, a half mirror 16 arranged on the optical path of an outgoing luminous flux O irradiated to the outside of the eye E with an image S at a retina of the flux I projected to the eye by the system 12 as a secondary light source to change the optical path of the flux O and CCD 18 arranged on the optical path of the flux O whose optical path is changed by the mirror 16 to detect the distribution of luminance in a direction corresponding to the z-direction of the outgoing luminous flux.
Abstract:
PROBLEM TO BE SOLVED: To provide a method in which, after an orientation treatment is executed to an orientation film used for a liquid-crystal display element, whether the orientation film is a nondefective or a defective is judged. SOLUTION: A CCD camera 12 is arranged in front and vertically with reference to a substrate 11 comprising an orientation film to which an orientation treatment is executed. A parallel-light irradiation light source 16 in which a halogen lamp for a fiber light source is used and which uses a Fresnel lens used to produce parallel light is used as a light source, and it is arranged at an inclination of 45 deg. and at an angle of elevation (in the obliquely lower part) of 30 deg. with reference to the substrate 11. A convex lens is used as a field lens between the CCD camera 12 and the substrate 11, and the CCD camera 12 is arranged in its focus. The substrate 11 is irradiated with parallel light from the light source 16, the main scattered light of a flaw due to the lapping treatment on the surface of the substrate 11 is photographed by the CCD camera 12, and its image data is fetched into an image processor 14 so as to be analyzed and detected by using two-dimensional Fourier transform software 15.
Abstract:
PROBLEM TO BE SOLVED: To provide an optical element and interferometer where optical axis adjustment is not required, the influence of a vibration is reduced, and miniaturization can be achieved.SOLUTION: An optical element 20 is constituted by sticking respective surfaces with vertex angles in first to fourth triangular prisms 21, 22, 23, 24. The both joint surfaces 21a, 22b of the first and second triangular prisms, the both joint surfaces 22a, 23b of the second and third triangular prisms, the both joint surfaces 23a, 24b of the third and fourth triangular prisms, and the both joint surfaces 24a, 21b of the fourth and first triangular prisms are respectively joined via optical thin films. Each one of the respective optical thin films has a characteristic to transmit or reflect incident light in accordance with the polarization state. The optical element 20 divides an optical path at a first position P1 in the optical thin film and combines the optical paths at a second position P2 in the optical thin film.
Abstract:
PROBLEM TO BE SOLVED: To provide an optical element that can compensate wavelength dispersion of laser beam easier than before. SOLUTION: The optical element 20A is made of a medium having optical transparency, and includes a larger refractive index than air and propagates incident laser beam inside while reflecting it with a wall surface 20a a plurality of times. The optical element includes an incident window 21 disposed at part of the wall surface 20a for making laser beam incident, a projection window 22 disposed at part of the wall surface 20a for projecting the laser beam propagated inside, and wavelength dispersion compensating means 31 and 32 disposed integrally at part of the medium for transmitting or reflecting the laser beam at least twice to compensate wavelength dispersion. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an optical unit which can be surely grasped and an optical device using the optical unit. SOLUTION: The optical unit 5, whose one end face is a lower surface 5a and whose other end face is an upper surface 5b, is equipped with grasping parts 39 and 39 realizing grasping by a grasping device 61 on the side parts on the upper surface 5b side. The grasping parts 39 are provided as a pair symmetrically at positions where they are opposed to each other at the side parts, and have two grasping surfaces 33 and 37 extended over the entire width of the side surfaces. One grasping surface 33 is constituted so that its normal going toward the outside turns downside and the other grasping surface 37 is constituted so that its normal going toward the outside turns upside, whereby the chuck surfaces 73 and 77 of the grasping device 61 are pressed on the grasping surfaces 33 and 37 respectively and the optical unit 5 is grasped. Therefore, stable grasping by four surfaces is realized. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an optical amplifying device which is small in size, enhanced in output, and easily made stable. SOLUTION: The optical amplifying device 1A is equipped with an optical amplifying unit 10A, and an energy supplying unit 30. The optical amplifying unit 10A contains an optical amplifying medium 11 and a transparent medium 12. The energy supplying unit 30 supplies pumping energy (eg, pumping light) to the optical amplifying unit 11. The optical amplifying medium 11 receives the supplied pumping light, amplifies the pumping light, and outputs the amplified light. The transparent medium 12 transmits the amplified light of the optical amplifying medium 11 twice or more times. The transparent medium 12 is capable of, for example, propagating the amplified light inside in zigzags. COPYRIGHT: (C)2008,JPO&INPIT