GB2405954B - Projection image display apparatus with diffractive reflection polariser and astigmatism corrector - Google Patents

Projection image display apparatus with diffractive reflection polariser and astigmatism corrector

Info

Publication number
GB2405954B
GB2405954B GB0424535A GB0424535A GB2405954B GB 2405954 B GB2405954 B GB 2405954B GB 0424535 A GB0424535 A GB 0424535A GB 0424535 A GB0424535 A GB 0424535A GB 2405954 B GB2405954 B GB 2405954B
Authority
GB
United Kingdom
Prior art keywords
polariser
image display
display apparatus
projection image
astigmatism corrector
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 - Fee Related
Application number
GB0424535A
Other versions
GB2405954A (en
GB0424535D0 (en
Inventor
Tsutomu Nakashima
Satoshi Ouchi
Taro Imahase
Tomohiro Miyoshi
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
Priority claimed from JP2002369172A external-priority patent/JP2004126496A/en
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Publication of GB0424535D0 publication Critical patent/GB0424535D0/en
Publication of GB2405954A publication Critical patent/GB2405954A/en
Application granted granted Critical
Publication of GB2405954B publication Critical patent/GB2405954B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3102—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators
    • H04N9/3105—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying all colours simultaneously, e.g. by using two or more electronic spatial light modulators
    • 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
    • G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
    • G02B27/283—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1809—Diffraction gratings with pitch less than or comparable to the wavelength

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Liquid Crystal (AREA)
  • Projection Apparatus (AREA)
GB0424535A 2002-08-05 2003-08-04 Projection image display apparatus with diffractive reflection polariser and astigmatism corrector Expired - Fee Related GB2405954B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2002226806 2002-08-05
JP2002369172A JP2004126496A (en) 2002-08-05 2002-12-20 Optical unit and projection type video display device using optical unit
GB0318218A GB2393266B (en) 2002-08-05 2003-08-04 Projection type image display apparatus with diffractive reflection polariser

Publications (3)

Publication Number Publication Date
GB0424535D0 GB0424535D0 (en) 2004-12-08
GB2405954A GB2405954A (en) 2005-03-16
GB2405954B true GB2405954B (en) 2005-11-23

Family

ID=34222019

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0424535A Expired - Fee Related GB2405954B (en) 2002-08-05 2003-08-04 Projection image display apparatus with diffractive reflection polariser and astigmatism corrector

Country Status (1)

Country Link
GB (1) GB2405954B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113654997B (en) * 2021-08-31 2022-07-05 北京理工大学 High-resolution-high-precision Stokes-Mueller imager and calibration method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002100115A1 (en) * 2001-06-02 2002-12-12 Koninklijke Philips Electronics N.V. Digital image projector with oriented fixed-polarization-axis polarizing beamsplitter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002100115A1 (en) * 2001-06-02 2002-12-12 Koninklijke Philips Electronics N.V. Digital image projector with oriented fixed-polarization-axis polarizing beamsplitter

Also Published As

Publication number Publication date
GB2405954A (en) 2005-03-16
GB0424535D0 (en) 2004-12-08

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20080804