T
Takao Hayashi
Researcher at Panasonic
Publications - 4
Citations - 80
Takao Hayashi is an academic researcher from Panasonic. The author has contributed to research in topics: Signal & Birefringence. The author has an hindex of 4, co-authored 4 publications receiving 80 citations.
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Patent
Two plate-like beam splitting device
TL;DR: In this paper, a first plate beam-splitting element has a splitting ratio of P polarization to S polarization, and it splits at least a part of the beam reflected by the information recording medium along a direction different from that of a direction returning to the light emitting element.
Patent
Optical reading and writing device
TL;DR: In this paper, the relative tilt of an optical disk and a movable objective lens holder is measured as an output of a differential amplifier which subtracts an output from first photodetectors and detects the reflected light from optical disk from output of second photodeter.
Patent
Lens drive mechanism for optical disc player with parallel support springs having different spring constants
TL;DR: In this article, a lens drive mechanism for an optical disc player includes a movable unit including an objective lens for focusing a coherent beam of light on a optical disc, a lens holder carrying the objective lens, focusing and tracking coils secured to opposite portions of a periphery of the lens holder.
Patent
Optical information system having a birefringence plate movably disposed in accordance with the detected light intensity
TL;DR: In this article, a beam splitter is used between the light emitting source and the information recording member to separate the reflected light and light traveling from the source to the information recorder.