JP2502959Y2 - 光学式情報読取装置 - Google Patents

光学式情報読取装置

Info

Publication number
JP2502959Y2
JP2502959Y2 JP1986027380U JP2738086U JP2502959Y2 JP 2502959 Y2 JP2502959 Y2 JP 2502959Y2 JP 1986027380 U JP1986027380 U JP 1986027380U JP 2738086 U JP2738086 U JP 2738086U JP 2502959 Y2 JP2502959 Y2 JP 2502959Y2
Authority
JP
Japan
Prior art keywords
filter
light
optical information
diffraction grating
objective lens
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.)
Expired - Lifetime
Application number
JP1986027380U
Other languages
English (en)
Japanese (ja)
Other versions
JPS62142722U (enExample
Inventor
義英 田渕
昌之 阿部
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP1986027380U priority Critical patent/JP2502959Y2/ja
Publication of JPS62142722U publication Critical patent/JPS62142722U/ja
Application granted granted Critical
Publication of JP2502959Y2 publication Critical patent/JP2502959Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Optical Head (AREA)
JP1986027380U 1986-02-28 1986-02-28 光学式情報読取装置 Expired - Lifetime JP2502959Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1986027380U JP2502959Y2 (ja) 1986-02-28 1986-02-28 光学式情報読取装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1986027380U JP2502959Y2 (ja) 1986-02-28 1986-02-28 光学式情報読取装置

Publications (2)

Publication Number Publication Date
JPS62142722U JPS62142722U (enExample) 1987-09-09
JP2502959Y2 true JP2502959Y2 (ja) 1996-06-26

Family

ID=30829352

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1986027380U Expired - Lifetime JP2502959Y2 (ja) 1986-02-28 1986-02-28 光学式情報読取装置

Country Status (1)

Country Link
JP (1) JP2502959Y2 (enExample)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8104946A (nl) * 1981-11-02 1983-06-01 Philips Nv Inrichting voor het uitlezen en/of inschrijven van een optisch uitleesbare informatiestructuur op een registratiedrager.

Also Published As

Publication number Publication date
JPS62142722U (enExample) 1987-09-09

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