Inventor

NAGURA CHIHIRO

JP38 patents

⚠️ This page may combine multiple inventors who share the name “NAGURA CHIHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

NAGURA CHIHIRO

CANON KK

Optical encoder and apparatus provided therewith

Optical force sensor and apparatus using optical force sensor

Optical information recording/reproducing apparatus

Optical sensor having an irradiating light separation component and image forming apparatus thereof

Scale, encoder, lens apparatus, and image pickup system having a plurality of patterns with different modulating periods

Encoder for producing position information using positions of a first and second sensor, tilt angles, period of a pattern on a scale

Encoder and apparatus using the same

Encoder that detects displacement of an object, and lens apparatus and camera having the same

Optical information recording and reproducing apparatus capable of coma aberration correction

Apparatus using light-attenuating element for optically reproducing and recording information

Annealed optical information recording medium and optical information recording/reproducing apparatus for the same

Force sensor and robot equipped with force sensor

Optical encoder and control apparatus

Force sensor and robot equipped with force sensor

Optical sensor and apparatus including optical sensor

Position detection apparatus, machine tool apparatus, and exposure apparatus

Optical encoder and drive control device comprising a light receiving element to receive a first interference fringe formed by a first periodic pattern and a second diffracted light from a second periodic pattern toward the first periodic pattern

Position detection apparatus that detects a position of an object by detecting light from a scale, and lithography apparatus, force sensor, and apparatus having force sensor including the position detection apparatus

Position detection apparatus, lens apparatus, image pickup system, machine tool apparatus, exposure apparatus, position detection method, and non-transitory computer-readable storage medium which are capable of detecting reference position with high accuracy

Encoder and apparatus using encoder

Optical encoder and control apparatus for receiving light that forms moire fringes from a grating pattern

Position detection apparatus, lens apparatus, image pickup system, machine tool apparatus, position detection method, and non-transitory computer-readable storage medium which are capable of detecting abnormality

Position detection apparatus, force sensor, and apparatus

Position detection apparatus, lens apparatus, image pickup system, machine tool apparatus, position detection method, and non-transitory computer-readable storage medium

Optical encoder and apparatus including the same

Optical information recording-reproducing apparatus

Scale, displacement detection apparatus, lens apparatus, image pickup system, and assembling apparatus

NAGURA CHIHIRO

Optical encoder with a scale that has fine and coarse pitch patterns

Encoder having plural phase acquirers and a positional information acquirer for precisely obtaining a position of a scale

Optical encoder

Encoder

Encoder having a scale that includes block patterns

Rotary encoder having multiple slit arrays, which detects rotation angle

Rotary encoder and optical apparatus

Rotary encoder that detects rotation angle

HORIGUCHI HARUHIKO

Encoder having a scale with two areas in which an increasing direction of the amplitude of the energy distribution is opposite between the two areas for precisely obtaining a position of the scale

Optical encoder having a high resolution detection mode to detect a fine pitch pattern and a low resolution detection mode to detect a coarse pitch pattern

WATANABE IKUO

Rotary encoder and method of assembling the same