Yukihiro Abiko
Fujitsu
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Featured researches published by Yukihiro Abiko.
machine vision applications | 2002
Yukihiro Abiko; Akihiko Yabuki; Tetsuo Koezuka
The optical pickup of a magneto-optical drive is constructed of millimeter-size optical components, including a laser diode (LD), a collimating lens (CL), a polarizing beam splitter, some kinds of prisms, and photo detectors (PD). Each component must be assembled with micrometer-order accuracy. In particular, the astigmatism, which is adjusted by changing the position of the CL, must be within 0.65 micrometers in the optical axis direction. To enable the CL position to be adjusted quantitatively, we developed an adjustment method that uses passive alignment. We estimated the astigmatism by analyzing an image of the LD, which is acquired through the CL by illuminating the LD with the polarized light. We developed an optical-pickup adjustment system using the proposed method and tested its effectiveness experimentally. The results showed that this system can be used to adjust the accuracy to within 0.65 micrometers. Because the image of the LD and the PD are acquired clearly by this system, it should be useful for not only adjusting the optical pickup but also for visually inspecting the LD and PD.
Archive | 2005
Yukihiro Abiko; Takashi Shinzaki
Archive | 2004
Yukihiro Abiko
Archive | 2006
Yukihiro Abiko; Takashi Shinzaki; Kiyohiko Ikeda; Fumie Shiroyama
Archive | 2000
Yukihiro Abiko; Hideo Kato; Tetsuo Koezuka
Archive | 2001
Yukihiro Abiko; Tetsuo Koezuka; Hideo Kato
Archive | 2009
Yukihiro Abiko
Archive | 2005
Satoshi Semba; Yusaku Fujii; Yukihiro Abiko; Takashi Shinzaki
Archive | 2004
Yukihiro Abiko; Yusaku Fujii; Takashi Morihara
Archive | 2002
Yukihiro Abiko; Yusaku Fujii; Takashi Morihara