GB2350472B - Three-dimensional imaging system - Google Patents

Three-dimensional imaging system

Info

Publication number
GB2350472B
GB2350472B GB0020069A GB0020069A GB2350472B GB 2350472 B GB2350472 B GB 2350472B GB 0020069 A GB0020069 A GB 0020069A GB 0020069 A GB0020069 A GB 0020069A GB 2350472 B GB2350472 B GB 2350472B
Authority
GB
United Kingdom
Prior art keywords
imaging system
dimensional imaging
dimensional
imaging
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.)
Revoked
Application number
GB0020069A
Other versions
GB0020069D0 (en
GB2350472A (en
Inventor
Alan Howard Greenaway
Paul Michael Blanchard
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.)
UK Secretary of State for Defence
Original Assignee
UK Secretary of State for Defence
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 claimed from GBGB9804996.8A external-priority patent/GB9804996D0/en
Priority claimed from GB9828365A external-priority patent/GB2347261A/en
Application filed by UK Secretary of State for Defence filed Critical UK Secretary of State for Defence
Priority to GB0020069A priority Critical patent/GB2350472B/en
Priority claimed from PCT/GB1999/000658 external-priority patent/WO1999046768A1/en
Publication of GB0020069D0 publication Critical patent/GB0020069D0/en
Publication of GB2350472A publication Critical patent/GB2350472A/en
Application granted granted Critical
Publication of GB2350472B publication Critical patent/GB2350472B/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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
    • G11B7/12—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
    • G11B7/1353—Diffractive elements, e.g. holograms or gratings
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/02—Viewing or reading apparatus
    • G02B27/04—Viewing or reading apparatus having collapsible parts
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/42—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect
    • G02B27/4205—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect having a diffractive optical element [DOE] contributing to image formation, e.g. whereby modulation transfer function MTF or optical aberrations are relevant
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1828—Diffraction gratings having means for producing variable diffraction
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
    • G02B6/2848—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers having refractive means, e.g. imaging elements between light guides as splitting, branching and/or combining devices, e.g. lenses, 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
    • G11B7/14—Heads, e.g. forming of the optical beam spot or modulation of the optical beam specially adapted to record on, or to reproduce from, more than one track simultaneously

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Optical Distance (AREA)
  • Length Measuring Devices By Optical Means (AREA)
GB0020069A 1998-03-10 1999-03-05 Three-dimensional imaging system Revoked GB2350472B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0020069A GB2350472B (en) 1998-03-10 1999-03-05 Three-dimensional imaging system

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GBGB9804996.8A GB9804996D0 (en) 1998-03-10 1998-03-10 Three dimensional imaging system
GB9828365A GB2347261A (en) 1998-12-23 1998-12-23 Multiple-layer imaging system
PCT/GB1999/000658 WO1999046768A1 (en) 1998-03-10 1999-03-05 Three-dimensional imaging system
GB0020069A GB2350472B (en) 1998-03-10 1999-03-05 Three-dimensional imaging system

Publications (3)

Publication Number Publication Date
GB0020069D0 GB0020069D0 (en) 2000-10-04
GB2350472A GB2350472A (en) 2000-11-29
GB2350472B true GB2350472B (en) 2002-03-13

Family

ID=27255846

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0020069A Revoked GB2350472B (en) 1998-03-10 1999-03-05 Three-dimensional imaging system

Country Status (1)

Country Link
GB (1) GB2350472B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0510470D0 (en) 2005-05-23 2005-06-29 Qinetiq Ltd Coded aperture imaging system
GB2434935A (en) 2006-02-06 2007-08-08 Qinetiq Ltd Coded aperture imager using reference object to form decoding pattern
GB2434937A (en) 2006-02-06 2007-08-08 Qinetiq Ltd Coded aperture imaging apparatus performing image enhancement
GB0602380D0 (en) 2006-02-06 2006-03-15 Qinetiq Ltd Imaging system
GB2434934A (en) 2006-02-06 2007-08-08 Qinetiq Ltd Processing coded aperture image data by applying weightings to aperture functions and data frames
GB2434877A (en) 2006-02-06 2007-08-08 Qinetiq Ltd MOEMS optical modulator
GB0615040D0 (en) 2006-07-28 2006-09-06 Qinetiq Ltd Processing method for coded apperture sensor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5526336A (en) * 1995-01-24 1996-06-11 Samsung Electronics Co., Ltd. Optical pickup for optical disk having multiple recording layers
JPH08249707A (en) * 1995-03-10 1996-09-27 Pioneer Electron Corp Optical pickup device
JPH09179020A (en) * 1995-08-28 1997-07-11 Asahi Optical Co Ltd Diffracting multifocal objective for optical information recording and reproducing device
US5721629A (en) * 1995-06-26 1998-02-24 Samsung Electronics Co., Ltd. Dual-focus forming method and apparatus thereof
US5838496A (en) * 1995-08-28 1998-11-17 Asahi Kogaku Kogyo Kabushiki Kaisha Diffractive multi-focal objective lens

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5526336A (en) * 1995-01-24 1996-06-11 Samsung Electronics Co., Ltd. Optical pickup for optical disk having multiple recording layers
JPH08249707A (en) * 1995-03-10 1996-09-27 Pioneer Electron Corp Optical pickup device
US5892748A (en) * 1995-03-10 1999-04-06 Pioneer Electronic Corporation Optical pickup for reading or recording information on a recording surface
US5721629A (en) * 1995-06-26 1998-02-24 Samsung Electronics Co., Ltd. Dual-focus forming method and apparatus thereof
JPH09179020A (en) * 1995-08-28 1997-07-11 Asahi Optical Co Ltd Diffracting multifocal objective for optical information recording and reproducing device
US5838496A (en) * 1995-08-28 1998-11-17 Asahi Kogaku Kogyo Kabushiki Kaisha Diffractive multi-focal objective lens

Also Published As

Publication number Publication date
GB0020069D0 (en) 2000-10-04
GB2350472A (en) 2000-11-29

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Legal Events

Date Code Title Description
773K Patent revoked under sect. 73(2)/1977

Free format text: PATENT REVOKED ON 20040218