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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Igaki; Masahiko
Address:
Kanagawa, JP
No. of patents:
12
Patents:












Patent Number Title Of Patent Date Issued
7332708 Optical encoder February 19, 2008
In an optical encoder, a plurality of light sources is controlled on and off so as to use light rays to irradiate an optical grating of a scale from a plurality of different directions. The light rays are received by a plurality of photoreceptor elements. Operations are performed using
7122785 Rotation angle detection apparatus and resin rotary disk for the same October 17, 2006
A rotation information record surface of a rotary disk is disposed at an intermediate position between a fixing point of the rotary disk and a rotary shaft and a fixing position of a detection head, so that a stable gap can be obtained with a variation due to thermal expansion being
7087888 Electrical division circuit for an optical encoder August 8, 2006
In an optical encoder, an output signal of the encoder and a signal inverted from the output signal are respectively inputted to one input terminal and the other input terminal of a comparator constituting a circuit for electrically decomposing the output signal of the encoder, where
7045770 Sensor using roof mirror/roof prism array scale, and apparatus equipped with the sensor May 16, 2006
A divergent light beam from a light source unit having a plurality of light-emitting regions is almost contained within the surface of a reflecting body that is an array of micro roof mirrors/roof prisms disposed in a regular manner. The light beam emitted from the light source unit
7043054 Postal information input apparatus and a data display method thereof May 9, 2006
In a postal information input apparatus in which when a postcode to be read by a reader of a postal matter sorting machine cannot be normally read, a correct postcode is reentered manually from an input device, a first display means which displays on a display device of the input app
7026654 Package for optical semiconductor April 11, 2006
To provide a package for an optical semiconductor having a light-emitting device and a light-receiving device in one package, in which a groove is provided between the light-emitting device and the light-receiving device to thereby avoid rays of light from the light-emitting device to di
7022974 Sensor using roof mirror/roof prism array scale, and apparatus equipped with the sensor April 4, 2006
A divergent light beam from a light source unit having a plurality of light-emitting regions is almost contained within the surface of a reflecting body that is an array of micro roof mirrors/roof prisms disposed in a regular manner. The light beam emitted from the light source unit
7019282 Optical encoder March 28, 2006
An optical encoder includes a scale having an optical grating formed thereon, a plurality of light-receiving devices, a light-emitting device, and a position-information detecting unit. The plurality of light-receiving devices is movable with respect to the scale. The light-emitting
7019281 Rotation angle detection apparatus and rotary disk for same March 28, 2006
A rotation information record surface of a rotary disk is disposed at an intermediate position between a fixing point of the rotary disk and a rotary shaft and a fixing position of a detection head, so that a stable gap can be obtained with a variation due to thermal expansion being
6975408 Reflection scale and displacement measurement apparatus using the same December 13, 2005
This invention realizes a detection system which serves as a displacement measurement apparatus for optically detecting a relative position, improves the use efficiency of a light amount, and is resistant to mechanical variations. More specifically, in an optical sensor having a ligh
6901682 Rotation angle detecting apparatus and its rotary disc June 7, 2005
A rotary disc made of synthetic resin has a fixed portion fixed to a rotary shaft, a cylindrical portion extending in the thrust direction from the outer peripheral edge of the fixed portion, and a disc main body portion extending in the radial direction from the lower portion of the
6891150 Optical scale formed from mold having fixed and movable platens May 10, 2005
It is an object of this invention to provide a mold for manufacturing an optical scale which can be easily manufactured and is capable of outputting high-precision position signals. In order to achieve this object, there is provided a mold for an optical scale, which has fixed and mo










 
 
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