KR20000019593A - Apparatus for recognizing holographic image based upon angle and wavelength multiplexing - Google Patents

Apparatus for recognizing holographic image based upon angle and wavelength multiplexing Download PDF

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Publication number
KR20000019593A
KR20000019593A KR1019980037771A KR19980037771A KR20000019593A KR 20000019593 A KR20000019593 A KR 20000019593A KR 1019980037771 A KR1019980037771 A KR 1019980037771A KR 19980037771 A KR19980037771 A KR 19980037771A KR 20000019593 A KR20000019593 A KR 20000019593A
Authority
KR
South Korea
Prior art keywords
optical
wavelength
fourier
angle
generates
Prior art date
Application number
KR1019980037771A
Other languages
Korean (ko)
Inventor
Seung Hyun Lee
Eun Soo Kim
Yeong Rok Yoo
Sang Hoon Lee
Original Assignee
Seung Hyun Lee
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 Seung Hyun Lee filed Critical Seung Hyun Lee
Priority to KR1019980037771A priority Critical patent/KR20000019593A/en
Publication of KR20000019593A publication Critical patent/KR20000019593A/en

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0065—Recording, reproducing or erasing by using optical interference patterns, e.g. holograms
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/04—Processes or apparatus for producing holograms
    • G03H1/16—Processes or apparatus for producing holograms using Fourier transform
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/083—Disposition or mounting of heads or light sources relatively to record carriers relative to record carriers storing information in the form of optical interference patterns, e.g. holograms
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/127—Lasers; Multiple laser arrays
    • G11B7/1275—Two or more lasers having different wavelengths
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/128—Modulators
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1362—Mirrors
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1395—Beam splitters or combiners

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Holo Graphy (AREA)

Abstract

PURPOSE: An apparatus for recognizing holographic image based upon angle and wavelength multiplexing is provided to recognize an image in a real time by performing an image recognition with an image of a matching object by an optical correlation method. CONSTITUTION: A wavelength variable laser(10) varies a wavelength of a laser beam for performing a wavelength multiplexing of an input data and generates a wavelength variable laser beam. A beam splitter(20) optically divides the wavelength variable laser beam and generates a reference beam for forming a different optical path each other. An optical modulator(30) generates an optical modulating phase according to the emission by an object beam. An optical Fourier converting unit(40) converts the optical modulating phase into a Fourier converting phase. An optical refractive recording medium(50) stores a Fourier interference shape with an interference grid pattern shape by an optical refractive effect. An angle multiplex rotating body(60) provides a rotating force by stages for recording the Fourier interference shape in the optical refractive recording medium(50).
KR1019980037771A 1998-09-14 1998-09-14 Apparatus for recognizing holographic image based upon angle and wavelength multiplexing KR20000019593A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019980037771A KR20000019593A (en) 1998-09-14 1998-09-14 Apparatus for recognizing holographic image based upon angle and wavelength multiplexing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019980037771A KR20000019593A (en) 1998-09-14 1998-09-14 Apparatus for recognizing holographic image based upon angle and wavelength multiplexing

Publications (1)

Publication Number Publication Date
KR20000019593A true KR20000019593A (en) 2000-04-15

Family

ID=19550476

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019980037771A KR20000019593A (en) 1998-09-14 1998-09-14 Apparatus for recognizing holographic image based upon angle and wavelength multiplexing

Country Status (1)

Country Link
KR (1) KR20000019593A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003079284A1 (en) * 2002-03-19 2003-09-25 Maxsoft Co., Ltd Method and apparatus for assuring an integrity of a smart card using holography technologies
KR100767949B1 (en) * 2006-09-25 2007-10-17 주식회사 대우일렉트로닉스 Method of recording optical information and reproducing optical information
KR100787755B1 (en) * 2006-09-25 2007-12-24 주식회사 대우일렉트로닉스 Apparatus for processing optical information and method of reading optical information
KR101152798B1 (en) * 2010-08-09 2012-06-14 (주)펨트론 3d measurement apparatus using dual wave digital holography

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003079284A1 (en) * 2002-03-19 2003-09-25 Maxsoft Co., Ltd Method and apparatus for assuring an integrity of a smart card using holography technologies
KR100767949B1 (en) * 2006-09-25 2007-10-17 주식회사 대우일렉트로닉스 Method of recording optical information and reproducing optical information
KR100787755B1 (en) * 2006-09-25 2007-12-24 주식회사 대우일렉트로닉스 Apparatus for processing optical information and method of reading optical information
KR101152798B1 (en) * 2010-08-09 2012-06-14 (주)펨트론 3d measurement apparatus using dual wave digital holography

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