Abstract: An optical encoder includes: an optical scale having periodical optical patterns and can be relatively and angularly displaced; a projector for irradiating the optical scale with light; a light receiver for receiving light from the optical scale; and a calculator for calculating an absolute rotation angle ? of the optical scale in accordance with a signal from the light receiver. The optical patterns include a plurality of light shielding portions and a plurality of light transmitting portions, each of the portions being located alternately.

Abstract: The invention is related to a magnetic substance detection device for detecting a magnetic substance, including: a magnetoresistive sensor arranged in the middle of a movement path of the magnetic substance; and a lower magnet in which a south pole and a north pole are arrayed along the movement direction of the magnetic substance; and a upper magnet in which a north pole and a south pole are arrayed along the movement direction of the magnetic substance. The lower and upper magnets are arranged with the movement path of the magnetic substance interposed so that the south pole of the lower magnet and the north pole of the upper magnet are opposed to each other, and the north pole of the lower magnet and the south pole of the upper magnet are opposed to each other, whereby the magnetic substance can be detected with high accuracy.

Abstract: A monitoring system for a moving object including a leaking transmission device having a first and second leaking transmission paths extending substantially in parallel to each other, first equipment for transmitting a first transmission signal from one end side of both the ends of the leaking transmission device as a transmission medium to the other end side, second equipment for transmitting a second transmission signal from the other end side of both the ends of the leaking transmission device as the transmission medium to the one end side, and a detector for detecting a two-dimensional movement of a moving object as a monitoring target on the basis of a difference between variations of first and second reception signals based on the respective reflection waves of the first and second transmission signals from the moving object.

Abstract: Present invention provides an optical encoder capable of improving the precision of an interpolation angle in a single signal track, in an encoder of sine-wave angle interpolation type. The optical encoder includes a waveform, in which a phase-modulated wave is superimposed in a predetermined period over a sine-wave of a fundamental period, as a signal track (103), and an optical detector (104) for extracting the sine signal and the cosine signal of the phase-modulated wave. An operation unit (106) operates electric angles individually from the output signals of a first optical detector pair and a second optical detector pair belonging to the optical detector, and determines the sum and difference of the electric angles, thereby acquiring the electric angle and the phase-modulated wave of the fundamental period.

Abstract: An ophthalmologic apparatus including a measurement unit configured to measure a subject's eye, a sliding substrate configured to slide the measurement unit with respect to a base via a guide shaft, a plurality of shaft guide members provided on the base and configured to guide the guide shaft in an axial direction thereof, and an inclination reduction unit provided between the plurality of shaft guide members and configured to reduce inclination of the guide shaft with respect to the base.

Abstract: An ophthalmologic photographing apparatus includes an optical system, a pedestal, an auxiliary lens configured to be able to be inserted into and retracted from the optical system, a focusing lens, a focusing lens driving unit configured to move the focusing lens along an optical axis, a pedestal position detection unit configured to detect that the pedestal is away from the subject's eye by a predetermined distance, an auxiliary lens insertion detection unit configured to detect that the auxiliary lens is inserted into the optical system, a storage unit configured to store a position of the focusing lens, and a control unit configured to cause the focusing lens driving unit to move the focusing lens to a predetermined position stored in the storage unit based on outputs from the pedestal position detection unit and the auxiliary lens insertion detection unit.

Abstract: An ophthalmologic photographing apparatus includes an optical system, a pedestal, an auxiliary lens configured to be able to be inserted into and retracted from the optical system, a focusing lens, a focusing lens driving unit configured to move the focusing lens along an optical axis, a pedestal position detection unit configured to detect that the pedestal is away from the subject's eye by a predetermined distance, an auxiliary lens insertion detection unit configured to detect that the auxiliary lens is inserted into the optical system, a storage unit configured to store a position of the focusing lens, and a control unit configured to cause the focusing lens driving unit to move the focusing lens to a predetermined position stored in the storage unit based on outputs from the pedestal position detection unit and the auxiliary lens insertion detection unit.

Abstract: The present invention provides a magnetic rotational-angle detector capable of detecting a position and a rotational angle of a rotating member with excellent accuracy. The magnetic rotational-angle detector includes device arrays (51, 52) constituted by a plurality of magnetic sensor devices which are arranged to cancel the n-th order harmonic components by each other. In the device arrays, the magnetic sensor devices corresponding to each other are arranged such that they are spaced apart with a distance of (2m+1)?, and the arrangement of all the magnetic sensor devices and their orientations with respect to a power-supply terminal and a ground terminal are axisymmetrical about a straight line (2b) passing through a barycenric position (59) of all the magnetic sensor devices which is positioned on a straight line along a radial direction of a rotating drum (1).

Abstract: An origin position signal detector comprising: a rotary or linear scale (1) which includes an incremental track (3) magnetized at equal intervals and an origin position detection track (4) for detecting an origin position, and a magnetic sensor (5) which detects magnetic fields from the scale. The origin position detection track includes an origin position magnetized portion (11) and side magnetized portions (12) provided on both sides of the origin position magnetized portion (11) and magnetized with magnetization in the same direction at one or more positions as the origin position magnetized portion (11).

Abstract: A monitoring system for a moving object including a leaking transmission device having a first and second leaking transmission paths extending substantially in parallel to each other, first equipment for transmitting a first transmission signal from one end side of both the ends of the leaking transmission device as a transmission medium to the other end side, second equipment for transmitting a second transmission signal from the other end side of both the ends of the leaking transmission device as the transmission medium to the one end side, and a detector for detecting a two-dimensional movement of a moving object as a monitoring target on the basis of a difference between variations of first and second reception signals based on the respective reflection waves of the first and second transmission signals from the moving object.

Abstract: An electronic device housing includes a metallic base part 101; a resin part 402 fixed to the base part 101; and a printed circuit board 104 coming into contact with the resin part 402; wherein bonding of the base part 101 to the resin part 402 is carried out by way of a nanomold technique and wherein the resin part 402 has insulating property.

Abstract: An ophthalmologic photographing apparatus includes an imaging unit configured to capture a fundus image of a subject's eye to output an image signal, a projection unit configured to intermittently project an index light flux onto the subject's eye in synchronization with the image signal from the imaging unit, and an image recording unit configured to record the image signal from the imaging unit as a moving image.

Abstract: An ophthalmologic photographing apparatus includes an optical system, a pedestal, an auxiliary lens configured to be able to be inserted into and retracted from the optical system, a focusing lens, a focusing lens driving unit configured to move the focusing lens along an optical axis, a pedestal position detection unit configured to detect that the pedestal is away from the subject's eye by a predetermined distance, an auxiliary lens insertion detection unit configured to detect that the auxiliary lens is inserted into the optical system, a storage unit configured to store a position of the focusing lens, and a control unit configured to cause the focusing lens driving unit to move the focusing lens to a predetermined position stored in the storage unit based on outputs from the pedestal position detection unit and the auxiliary lens insertion detection unit.

Abstract: Present invention provides an optical encoder capable of improving the precision of an interpolation angle in a single signal track, in an encoder of sine-wave angle interpolation type. The optical encoder includes a waveform, in which a phase-modulated wave is superimposed in a predetermined period over a sine-wave of a fundamental period, as a signal track (103), and an optical detector (104) for extracting the sine signal and the cosine signal of the phase-modulated wave. An operation unit (106) operates electric angles individually from the output signals of a first optical detector pair and a second optical detector pair belonging to the optical detector, and determines the sum and difference of the electric angles, thereby acquiring the electric angle and the phase-modulated wave of the fundamental period.

Abstract: An ophthalmologic photographing apparatus includes an imaging unit configured to capture a fundus image of a subject's eye to output an image signal, a projection unit configured to intermittently project an index light flux onto the subject's eye in synchronization with the image signal from the imaging unit, and an image recording unit configured to record the image signal from the imaging unit as a moving image.

Abstract: In a photographing optical system, an autofluorescence barrier filter having a characteristic of transmitting a light having an autofluorescence wavelength and a near-infrared wavelength, and a near-infrared light cut-off filter having a characteristic of transmitting the visible light and blocking the near-infrared light are disposed to be replaceable. In the case of observing a fundus, the fluorescence barrier filter is inserted into an optical path in an observation photographing optical system, so that observation can be performed by using a near-infrared illuminating light. In the case of autofluorescence photographing, the photographing can be performed without filter switching. In the case of color photographing, at the time of observation, the observation is performed using the fluorescence barrier filter, and at the time of photographing, the photographing can be performed using the replaced infrared light cut-off filter.

Abstract: An electronic device housing includes a metallic base part 101; a resin part 402 fixed to the base part 101; and a printed circuit board 104 coming into contact with the resin part 402; wherein bonding of the base part 101 to the resin part 402 is carried out by way of a nanomold technique and wherein the resin part 402 has insulating property.

Abstract: A fundus camera wherein when a photography start switch is selected, the optical axis of an eye examining section is aligned with the optical axis of an eye by a detection operation of an alignment optical system. After focusing of a fundus image is performed, the eye examining section is moved to a first recording mode position, and a first photograph of the fundus is taken by a stroboscopic tube. Subsequent to taking the first photograph of the fundus, a base length is changed and an alignment position is moved to a second recording mode position so that a second photograph of the fundus is taken.

Abstract: The present invention provides a magnetic rotational-angle detector capable of detecting a position and a rotational angle of a rotating member with excellent accuracy. The magnetic rotational-angle detector includes device arrays (51, 52) constituted by a plurality of magnetic sensor devices which are arranged to cancel the n-th order harmonic components by each other. In the device arrays, the magnetic sensor devices corresponding to each other are arranged such that they are spaced apart with a distance of (2m+1)?, and the arrangement of all the magnetic sensor devices and their orientations with respect to a power-supply terminal and a ground terminal are axisymmetrical about a straight line (2b) passing through a barycenric position (59) of all the magnetic sensor devices which is positioned on a straight line along a radial direction of a rotating drum (1).

Abstract: An identity verification apparatus includes a light source for applying light that can pass through an object to be detected and having a fingerprints to the object to be detected, an image pickup unit for picking up light emitted from the light source and passing through projections of the fingerprint and light emitted from the light source and passing through depressions of the fingerprint, and for generating a fingerprint image including dark portions corresponding to the projections and bright portions corresponding to the depressions, and a signal processing unit for image processing the fingerprint image generated by the image pickup unit to generate fingerprint information, and for verifying an identity based on the fingerprint information.