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 (enrdf_load_stackoverflow
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

  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
  • Automatic Focus Adjustment (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 (enrdf_load_stackoverflow) 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 (enrdf_load_stackoverflow)

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 (enrdf_load_stackoverflow) * 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
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

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 (enrdf_load_stackoverflow) * 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
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 (enrdf_load_stackoverflow) 1986-06-06

Similar Documents

Publication Publication Date Title
CA2042829A1 (en) Polarization converting device and polarized-light illuminating system using the device and image display unit using the same
EP0266841B1 (en) An optical data recording device
US3919698A (en) Method of reducing the optical noise produced by a motion on an illuminated surface, and optical devices for implementing said method
EP0840305A3 (en) Optical apparatus
JPS5768813A (en) Optical information reader
ATE66762T1 (de) Optische leseeinrichtung fuer optische aufnahmetraeger.
KR920020427A (ko) 광헤드장치
JPS5683849A (en) Optical information reader
KR970028643A (ko) 광검출장치
EP3031007B1 (en) Laser light beam scanning device for reading coded information
JPS5793314A (en) Semiconductor laser optical device
CA2084259A1 (en) Linear, polarization/conversion apparatus
GB2185588A (en) Optical switching using holographic elements
JPS5771537A (en) Optical pickup device
JPS5467443A (en) Observer
EP0591541A4 (en) LASER.
JPS55159273A (en) Optical unit
JPS5641530A (en) Photodisk recording device
JPS5771536A (en) Optical pickup device
JPS54139749A (en) Isolator for semiconductor laser
SU1679541A1 (ru) Устройство дл воспроизведени информации с оптического носител
JPS63309815A (ja) 光学干渉装置
JPS5661045A (en) Optical information reader
JPS5470004A (en) Optical information reader
JPS57124707A (en) Control system for polarizing direction for semiconductor laser oscillating beam