JP3750356B2 - 開口制御素子およびこれを用いた光ヘッド装置 - Google Patents

開口制御素子およびこれを用いた光ヘッド装置 Download PDF

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Publication number
JP3750356B2
JP3750356B2 JP19469898A JP19469898A JP3750356B2 JP 3750356 B2 JP3750356 B2 JP 3750356B2 JP 19469898 A JP19469898 A JP 19469898A JP 19469898 A JP19469898 A JP 19469898A JP 3750356 B2 JP3750356 B2 JP 3750356B2
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Japan
Prior art keywords
optical
light
film
absorption
wavelength
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Expired - Fee Related
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JP19469898A
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Japanese (ja)
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JP2000030283A (ja
JP2000030283A5 (enExample
Inventor
具展 妹尾
浩一 村田
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AGC Inc
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Asahi Glass Co Ltd
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JP19469898A 1998-07-09 1998-07-09 開口制御素子およびこれを用いた光ヘッド装置 Expired - Fee Related JP3750356B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19469898A JP3750356B2 (ja) 1998-07-09 1998-07-09 開口制御素子およびこれを用いた光ヘッド装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19469898A JP3750356B2 (ja) 1998-07-09 1998-07-09 開口制御素子およびこれを用いた光ヘッド装置

Publications (3)

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JP2000030283A JP2000030283A (ja) 2000-01-28
JP2000030283A5 JP2000030283A5 (enExample) 2005-05-26
JP3750356B2 true JP3750356B2 (ja) 2006-03-01

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JP19469898A Expired - Fee Related JP3750356B2 (ja) 1998-07-09 1998-07-09 開口制御素子およびこれを用いた光ヘッド装置

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JP (1) JP3750356B2 (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60330817D1 (de) * 2002-02-27 2010-02-11 Ricoh Kk Optischer Lesekopf und optische Informationsverarbeitungsvorrichtung

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JP2000030283A (ja) 2000-01-28

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