GB9809646D0 - Projection device - Google Patents

Projection device

Info

Publication number
GB9809646D0
GB9809646D0 GBGB9809646.4A GB9809646A GB9809646D0 GB 9809646 D0 GB9809646 D0 GB 9809646D0 GB 9809646 A GB9809646 A GB 9809646A GB 9809646 D0 GB9809646 D0 GB 9809646D0
Authority
GB
United Kingdom
Prior art keywords
housing
light beam
lens
supporting arm
panel
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.)
Withdrawn
Application number
GBGB9809646.4A
Other versions
GB2337134A (en
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.)
SUNFLOWER SYSTEMS Inc
Original Assignee
SUNFLOWER SYSTEMS Inc
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 SUNFLOWER SYSTEMS Inc filed Critical SUNFLOWER SYSTEMS Inc
Priority to GB9809646A priority Critical patent/GB2337134A/en
Publication of GB9809646D0 publication Critical patent/GB9809646D0/en
Publication of GB2337134A publication Critical patent/GB2337134A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/16—Optical objectives specially designed for the purposes specified below for use in conjunction with image converters or intensifiers, or for use with projectors, e.g. objectives for projection TV
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/02—Catoptric systems, e.g. image erecting and reversing system
    • G02B17/04—Catoptric systems, e.g. image erecting and reversing system using prisms only
    • G02B17/045—Catoptric systems, e.g. image erecting and reversing system using prisms only having static image erecting or reversing properties only
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/005—Projectors using an electronic spatial light modulator but not peculiar thereto
    • G03B21/006—Projectors using an electronic spatial light modulator but not peculiar thereto using LCD's
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/147—Optical correction of image distortions, e.g. keystone
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/16—Cooling; Preventing overheating
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
    • H04N5/7416—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal
    • H04N5/7441—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal the modulator being an array of liquid crystal cells
    • 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]
    • H04N9/3141—Constructional details thereof

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Projection Apparatus (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Overhead Projectors And Projection Screens (AREA)
  • Liquid Crystal (AREA)

Abstract

A projecting device for projecting a pattern produced by an LCD 73 of a notebook computer set 7 to a screen 9 includes a housing 2, a light beam source 3, a lens-supporting arm 4 and a projection lens unit 5. The housing 2 has a transparent panel 21 that is adapted to mount the LCD 73. The light beam source 3 is mounted inside the housing 2. The lens-supporting arm 4 extends from the housing 2 away from the panel 21 in the direction of the light beam. The projection lens unit 5 is mounted on the lens-supporting arm 4 and is disposed across a straight line which extends between the panel 21 to the screen 9. The projection lens unit 5 includes a lens assembly (51, Fig 8) for producing an image from the light beam, and a light-transmissive image rotating unit (52, Fig 8) for rotating the image by a predetermined angle. The device may have support rods (8, 8', Fig 7) to allow tilting. Heat dissapating devices (6, 31, Fig 2) may be used.
GB9809646A 1998-05-06 1998-05-06 Projector for LCD with lens supporting arm Withdrawn GB2337134A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9809646A GB2337134A (en) 1998-05-06 1998-05-06 Projector for LCD with lens supporting arm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9809646A GB2337134A (en) 1998-05-06 1998-05-06 Projector for LCD with lens supporting arm

Publications (2)

Publication Number Publication Date
GB9809646D0 true GB9809646D0 (en) 1998-07-01
GB2337134A GB2337134A (en) 1999-11-10

Family

ID=10831525

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9809646A Withdrawn GB2337134A (en) 1998-05-06 1998-05-06 Projector for LCD with lens supporting arm

Country Status (1)

Country Link
GB (1) GB2337134A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020236175A1 (en) * 2019-05-22 2020-11-26 Hewlett-Packard Development Company, L.P. Projection unit and scanner accessories

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4051535A (en) * 1976-04-09 1977-09-27 Inglis James M Magnification of television images
US5392081A (en) * 1993-09-29 1995-02-21 Texas Instruments Incorporated Calculator projection display
WO1996012998A1 (en) * 1994-10-21 1996-05-02 Jan Batal Projection system

Also Published As

Publication number Publication date
GB2337134A (en) 1999-11-10

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)