发明名称 OPTICAL PICKUP
摘要 PURPOSE:To provide an optical pickup for exactly controlling the quantity of light of semiconductor laser with a structure to use a hologram. CONSTITUTION:A reflected hologram area 13a is formed at a hologram 13a so as to reflect forward emitted light from a semiconductor laser 11 and to converge it on a photodetector area 16b for output monitor of a photodetector 16. Then, the photodetector area 16a for output monitor and a photodetector area 16a for signal detection to receive reflected light from an optical disk 15 are monolithically integrated.
申请公布号 JPH07192295(A) 申请公布日期 1995.07.28
申请号 JP19930333520 申请日期 1993.12.27
申请人 SANYO ELECTRIC CO LTD 发明人 MORI KAZUSHI;TAJIRI ATSUSHI;YOSHITOSHI KEIICHI;YAMAGUCHI TAKAO
分类号 G11B7/135 主分类号 G11B7/135
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