Sughrue Mion, PLLC
Optical apparatus
An optical apparatus includes: a focusing lens that focuses light which is one of recording light being irradiated to an optical recording medium with reference light for recording a hologram and reference light being irradiated to an optical recording medium for reading out a hologram; and a focal position-shifting unit that refracts the light while moving in accordance with a moving speed of the optical recording medium, so as to shift a focal position of the light in the optical recording medium a distance in a thickness direction of the optical recording medium.
Fuji Xerox Co., Ltd
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G03H G11B G03H G11B G11B G03H
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Jiro Yasuhiro Shin Kazuhiro Koichi Katsunori Makoto Hisae
Minabe Ogasawara Yasuda Hayashi Haga Kawano Furuki Yoshizawa