JPS5683849A - Optical information reader - Google Patents

Optical information reader

Info

Publication number
JPS5683849A
JPS5683849A JP16097979A JP16097979A JPS5683849A JP S5683849 A JPS5683849 A JP S5683849A JP 16097979 A JP16097979 A JP 16097979A JP 16097979 A JP16097979 A JP 16097979A JP S5683849 A JPS5683849 A JP S5683849A
Authority
JP
Japan
Prior art keywords
permeates
beam splitter
reflected
wavelength plate
light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP16097979A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6123575B2 (US06373033-20020416-M00035.png
Inventor
Tetsuo Hosomi
Toshiro Kamogawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP16097979A priority Critical patent/JPS5683849A/ja
Publication of JPS5683849A publication Critical patent/JPS5683849A/ja
Publication of JPS6123575B2 publication Critical patent/JPS6123575B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Automatic Focus Adjustment (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
JP16097979A 1979-12-11 1979-12-11 Optical information reader Granted JPS5683849A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16097979A JPS5683849A (en) 1979-12-11 1979-12-11 Optical information reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16097979A JPS5683849A (en) 1979-12-11 1979-12-11 Optical information reader

Publications (2)

Publication Number Publication Date
JPS5683849A true JPS5683849A (en) 1981-07-08
JPS6123575B2 JPS6123575B2 (US06373033-20020416-M00035.png) 1986-06-06

Family

ID=15726258

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16097979A Granted JPS5683849A (en) 1979-12-11 1979-12-11 Optical information reader

Country Status (1)

Country Link
JP (1) JPS5683849A (US06373033-20020416-M00035.png)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59121634A (ja) * 1982-12-28 1984-07-13 Pioneer Electronic Corp 光学的ピツクアツプ装置における焦点検出装置
JPS61105919U (US06373033-20020416-M00035.png) * 1984-12-12 1986-07-05
JPS61287041A (ja) * 1985-06-12 1986-12-17 Pioneer Electronic Corp 光学式ピツクアツプ装置
JPS6255602A (ja) * 1985-08-24 1987-03-11 ドクトル−インジエニエ−ル・ル−ドルフ・ヘル・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング 積分集光器
EP0326354A2 (en) * 1988-01-25 1989-08-02 Olympus Optical Co., Ltd. Apparatus for reading information out of an optical recording medium

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59121634A (ja) * 1982-12-28 1984-07-13 Pioneer Electronic Corp 光学的ピツクアツプ装置における焦点検出装置
JPH0424768B2 (US06373033-20020416-M00035.png) * 1982-12-28 1992-04-28 Pioneer Electronic Corp
JPS61105919U (US06373033-20020416-M00035.png) * 1984-12-12 1986-07-05
JPH0433546Y2 (US06373033-20020416-M00035.png) * 1984-12-12 1992-08-11
JPS61287041A (ja) * 1985-06-12 1986-12-17 Pioneer Electronic Corp 光学式ピツクアツプ装置
JPS6255602A (ja) * 1985-08-24 1987-03-11 ドクトル−インジエニエ−ル・ル−ドルフ・ヘル・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング 積分集光器
EP0326354A2 (en) * 1988-01-25 1989-08-02 Olympus Optical Co., Ltd. Apparatus for reading information out of an optical recording medium
US5155718A (en) * 1988-01-25 1992-10-13 Olympus Optical Co., Ltd. Optical record medium reading apparatus having a de-focussed light beam projected on an optical record medium

Also Published As

Publication number Publication date
JPS6123575B2 (US06373033-20020416-M00035.png) 1986-06-06

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