JPS5485054A - Hologram reconstructor - Google Patents

Hologram reconstructor

Info

Publication number
JPS5485054A
JPS5485054A JP15323277A JP15323277A JPS5485054A JP S5485054 A JPS5485054 A JP S5485054A JP 15323277 A JP15323277 A JP 15323277A JP 15323277 A JP15323277 A JP 15323277A JP S5485054 A JPS5485054 A JP S5485054A
Authority
JP
Japan
Prior art keywords
hologram
hologram plate
light
shield pattern
deflector
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.)
Pending
Application number
JP15323277A
Other languages
Japanese (ja)
Inventor
Fumikazu Tateishi
Katsuyuki Fujito
Yoshikazu Nakayama
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 JP15323277A priority Critical patent/JPS5485054A/en
Priority to US05/970,439 priority patent/US4278318A/en
Publication of JPS5485054A publication Critical patent/JPS5485054A/en
Pending legal-status Critical Current

Links

Landscapes

  • Holo Graphy (AREA)

Abstract

PURPOSE: To correct the position errors of holograms and radiation luminous flux at a high speed by detecting the position of a hologram plate by the shield pattern provided to the hologram plate.
CONSTITUTION: A hologram group 1a having been recorded with information and X-form shield pattern 1b are provided to a hologram plate 1 and a photo detector 10 is connected to a light deflector driving circuit 12 by way of a feedback circuit 11. Then, the laser light from a laser light source 4 deflected by a deflector 5 is radiated to the specified hologram of the hologram plate 1 via lens 6 and the diffracted light thereof is imaged on an information detecting element 8 and is at the same time intermittently radiated to the X-form shield pattern 1b. The transmitted light thereof then enters the photo detector 10 and the position of the hologram plate 1 is detected. Based on the detection signal thereof, feedback is applied to the light deflector 5, whereby the hologram lighting luminous flux is follow-up-controlled to the position of the hologram plate 1.
COPYRIGHT: (C)1979,JPO&Japio
JP15323277A 1977-12-19 1977-12-19 Hologram reconstructor Pending JPS5485054A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP15323277A JPS5485054A (en) 1977-12-19 1977-12-19 Hologram reconstructor
US05/970,439 US4278318A (en) 1977-12-19 1978-12-18 Holographic reconstructing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15323277A JPS5485054A (en) 1977-12-19 1977-12-19 Hologram reconstructor

Publications (1)

Publication Number Publication Date
JPS5485054A true JPS5485054A (en) 1979-07-06

Family

ID=15557934

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15323277A Pending JPS5485054A (en) 1977-12-19 1977-12-19 Hologram reconstructor

Country Status (1)

Country Link
JP (1) JPS5485054A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2634290A1 (en) * 1988-07-13 1990-01-19 Hologram Ind Method and device for recording 3-D images
WO2005052929A1 (en) * 2003-11-28 2005-06-09 Tdk Corporation Reproducing method and device for holographic memory

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2634290A1 (en) * 1988-07-13 1990-01-19 Hologram Ind Method and device for recording 3-D images
WO2005052929A1 (en) * 2003-11-28 2005-06-09 Tdk Corporation Reproducing method and device for holographic memory
US7589876B2 (en) 2003-11-28 2009-09-15 Tdk Corporation Holographic memory reproduction method and apparatus

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