Inventor

IZUMI KATSUHIKO

JP17 patents

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

IZUMI KATSUHIKO

HITACHI LTD

Optical detector, optical pickup and optical information reproducing apparatus using optical pickup

Objective lens driving device and optical disc apparatus using the same

Objective lens driving device and optical disc apparatus using the same

Disc auto changer for recording or reproducing information on a desired disc of a plurality of discs in a magazine

Optical detector, optical pickup and optical information reproducing apparatus using optical pickup for detecting at least three light beams separated from one or more light sources

Objective lens driving device and optical disc apparatus using the same

Magnetic recording and reproducing apparatus with repositioning stop mode

Magnetic recording and reproducing apparatus

HITACHI MEDIA ELECTRON KK

Photodetector, diffraction grating, optical pickup and optical disc apparatus

Photodetector, diffraction grating, optical pickup and optical disc apparatus

Optical pickup and optical disc apparatus

Optical disc drive, optical pickup and optical component used therefor

HITACHI LG DATA STORAGE INC

Distance measurement apparatus and angle adjustment method of the same

Three-dimensional distance measurement apparatus

Three-dimensional distance measurement device

IZUMI KATSUHIKO

Optical pickup and optical disc unit

Optical pickup and optical disc apparatus