JPS55150142A - Optical signal reproducing head - Google Patents

Optical signal reproducing head

Info

Publication number
JPS55150142A
JPS55150142A JP5620679A JP5620679A JPS55150142A JP S55150142 A JPS55150142 A JP S55150142A JP 5620679 A JP5620679 A JP 5620679A JP 5620679 A JP5620679 A JP 5620679A JP S55150142 A JPS55150142 A JP S55150142A
Authority
JP
Japan
Prior art keywords
lens
beam splitter
bonding layer
under
optical signal
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
JP5620679A
Other languages
Japanese (ja)
Other versions
JPS6143771B2 (en
Inventor
Chiaki Kojima
Yutaka Oki
Kayoko Hasegawa
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.)
Sony Corp
Original Assignee
Sony Corp
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
Priority to AU58049/80A priority Critical patent/AU535350B2/en
Application filed by Sony Corp filed Critical Sony Corp
Priority to JP5620679A priority patent/JPS55150142A/en
Priority to US06/145,687 priority patent/US4312559A/en
Priority to GB8014585A priority patent/GB2049986B/en
Priority to CA351,258A priority patent/CA1127886A/en
Priority to NL8002589A priority patent/NL8002589A/en
Priority to FR8010220A priority patent/FR2456343A1/en
Priority to DE19803017491 priority patent/DE3017491A1/en
Publication of JPS55150142A publication Critical patent/JPS55150142A/en
Publication of JPS6143771B2 publication Critical patent/JPS6143771B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Optical Head (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)

Abstract

PURPOSE: To obtain an optical signal reproducing head which is lightweight and inexpensive and simplifiers a focus servo by using a hologram lens as an objective lens and by bonding a beam splitter, λ/4 plate and the above-mentioned lens in a body.
CONSTITUTION: Under beam splitter 3 obtained by connecting a couple of 45-degree prisms 3a and 3b mutually by multilayer film 3c at their bevels, λ/4 plate 4 is bonded with light-transmissive bonding layer 8 interposed and under it, hologram lens (e.g., an inline hologram lens formed by providing photosensitive film 5a having circular lens part 5a' in the center on glass substrate 5b) 5 is stuck via bonding layer 8. Under it, cover glass 9 is further bonded via bonding layer 8 and photodetecting element (e.g., photodiode) 7 is fitted to the flank of prism 3b of beam splitter 3 to obtain the marked reproduced head.
COPYRIGHT: (C)1980,JPO&Japio
JP5620679A 1979-05-07 1979-05-07 Optical signal reproducing head Granted JPS55150142A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
AU58049/80A AU535350B2 (en) 1979-05-07 1979-05-02 Inline hologram lens
JP5620679A JPS55150142A (en) 1979-05-07 1979-05-07 Optical signal reproducing head
US06/145,687 US4312559A (en) 1979-05-07 1980-05-01 Method of producing an inline hologram lens
GB8014585A GB2049986B (en) 1979-05-07 1980-05-02 Inline hologram lenses
CA351,258A CA1127886A (en) 1979-05-07 1980-05-05 Method of producing inline hologram lens
NL8002589A NL8002589A (en) 1979-05-07 1980-05-06 METHOD FOR MANUFACTURING A COAXIAL HOLOGRAM LENS, AND LENS METHOD OBTAINED
FR8010220A FR2456343A1 (en) 1979-05-07 1980-05-07 PROCESS FOR MANUFACTURING HOLOGRAPHIC LENSES AND LENSES THUS OBTAINED
DE19803017491 DE3017491A1 (en) 1979-05-07 1980-05-07 METHOD FOR PRODUCING AN INLINE HOLOGRAM AND USING SUCH A HOLOGRAM IN AN OPTICAL PLAY HEAD

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5620679A JPS55150142A (en) 1979-05-07 1979-05-07 Optical signal reproducing head

Publications (2)

Publication Number Publication Date
JPS55150142A true JPS55150142A (en) 1980-11-21
JPS6143771B2 JPS6143771B2 (en) 1986-09-30

Family

ID=13020632

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5620679A Granted JPS55150142A (en) 1979-05-07 1979-05-07 Optical signal reproducing head

Country Status (1)

Country Link
JP (1) JPS55150142A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58166543A (en) * 1982-03-09 1983-10-01 トムソン−セエスエフ Optical head of recording and reading device for data carrier
JPS6023934U (en) * 1983-07-26 1985-02-19 ソニー株式会社 Pickup parts for optical discs
JPS6043237A (en) * 1983-08-19 1985-03-07 Nippon Telegr & Teleph Corp <Ntt> Optical head
JPS61243964A (en) * 1985-04-22 1986-10-30 Sony Corp Semiconductor laser device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58166543A (en) * 1982-03-09 1983-10-01 トムソン−セエスエフ Optical head of recording and reading device for data carrier
JPH05210867A (en) * 1982-03-09 1993-08-20 Thomson Csf Optical head for at least one of recording and read of data on data carrier
JPS6023934U (en) * 1983-07-26 1985-02-19 ソニー株式会社 Pickup parts for optical discs
JPH0441465Y2 (en) * 1983-07-26 1992-09-29
JPS6043237A (en) * 1983-08-19 1985-03-07 Nippon Telegr & Teleph Corp <Ntt> Optical head
JPH0221059B2 (en) * 1983-08-19 1990-05-11 Nippon Telegraph & Telephone
JPS61243964A (en) * 1985-04-22 1986-10-30 Sony Corp Semiconductor laser device

Also Published As

Publication number Publication date
JPS6143771B2 (en) 1986-09-30

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