WO2007079299B1 - Compact projection display with emissive imager - Google Patents
Compact projection display with emissive imagerInfo
- Publication number
- WO2007079299B1 WO2007079299B1 PCT/US2006/061420 US2006061420W WO2007079299B1 WO 2007079299 B1 WO2007079299 B1 WO 2007079299B1 US 2006061420 W US2006061420 W US 2006061420W WO 2007079299 B1 WO2007079299 B1 WO 2007079299B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- emissive
- pixel
- projection
- recited
- sub
- Prior art date
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]
-
- 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
-
- 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
Abstract
The present invention provides a system for reducing the size of a projection display system. This is achieved by using an emissive imager that comprises a large number of emissive pixels. The emissive pixels provide both light output and light modulation functions. This eliminates the need for a separate illumination source. Each emissive pixel represents a pixel (or a sub- pixel for color projection) of an image to be projected. The light signals produced and modulated by the emissive imager are passed through a microlens array. The microlens array collects and reshapes the emitted light signals from the emissive pixels. Each microlens forms a light beam with a concentrated non-Lambertian radiation profile. The non-Lambertian radiation profile helps in effective collection of light at a projection lens. Finally, the projection lens collects this light and projects a magnified image on a projection screen.
Claims
1. A compact projection system for projecting an image on a projection screen, the projection system comprising: an emissive imager comprising a plurality of emissive pixels, each emissive pixel representing a single pixel of the image, the emissive pixel emitting light signals modulated according to image information; a microlens array comprising a plurality of microlenses, each microlens matched to one emissive pixel to collect and reshape the emitted light signals; and a projection lens system, the projection lens system having a collect cone matched to the microlens array to magnify and project the light signals collected by the microlenses on the projection screen.
2. The system as recited in claim 1 wherein an emissive pixel is an Organic Light Emitting Diode.
3. The system as recited in claim 1 wherein an emissive pixel is an electroluminescent device.
4 The system as recited in claim 1 wherein an emissive pixel is a field emission device.
5. The system as recited in claim 1 wherein each emissive pixel corresponds to one of the primary colors red, green, and blue, and wherein a combination of three emissive pixels of the three primary colors represents a single color pixel of the image.
AMENDED SHEET (ARTICLE 19)
6. A compact projection system for projecting an image on a projection screen, the compact projection system comprising: an emissive color imager comprising a plurality of emissive sub-pixels, each emissive sub-pixel corresponding to one of the primary colors red, green, and blue, a combination of three emissive sub-pixels of the three primary colors representing a single color pixel of the image, the emissive sub-pixels emitting light signals modulated according to image information; a microlens array comprising a plurality of microlenses, each microlens matched to one emissive sub-pixel to collect and reshape the emitted light signals; and a projection lens system having a collect cone matched to the microlens array to magnify and project the light signals concentrated by the microlenses on the projection screen.
7,. The system as recited in claim 6 wherein an emissive sub-pixel is an Organic Light Emitting Diode.
8. The system as recited in claim 6 wherein an emissive sub-pixel is an electroluminescent device.
9: The system as recited in claim 6 wherein an emissive sub-pixel is a field emission device.
AMENDED SHEET (ARTICLE 19)
15
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112006003610T DE112006003610T5 (en) | 2005-12-28 | 2006-11-30 | Compact projection display with emitting image generator |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/319,681 US20070146655A1 (en) | 2005-12-28 | 2005-12-28 | Compact projection display with emissive imager |
US11/319,681 | 2005-12-28 |
Publications (3)
Publication Number | Publication Date |
---|---|
WO2007079299A2 WO2007079299A2 (en) | 2007-07-12 |
WO2007079299A3 WO2007079299A3 (en) | 2008-05-22 |
WO2007079299B1 true WO2007079299B1 (en) | 2008-07-10 |
Family
ID=38193232
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2006/061420 WO2007079299A2 (en) | 2005-12-28 | 2006-11-30 | Compact projection display with emissive imager |
Country Status (3)
Country | Link |
---|---|
US (1) | US20070146655A1 (en) |
DE (1) | DE112006003610T5 (en) |
WO (1) | WO2007079299A2 (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7178735B2 (en) * | 2004-11-15 | 2007-02-20 | Kuo Ching Chiang | Multi-function portable communication device |
US7874486B2 (en) | 2004-11-15 | 2011-01-25 | Kuo-Ching Chiang | Portable communication device with DMD |
US9083781B2 (en) | 2004-11-15 | 2015-07-14 | Bascule Development Ag Llc | Portable image-capturing device with embedded projector |
US8640954B2 (en) | 2007-04-10 | 2014-02-04 | Bascule Development Ag Llc | Filter-free projector |
US20090115970A1 (en) * | 2007-11-02 | 2009-05-07 | Jabil Circuit, Inc. | High efficiency compact oled microdisplay projection engine |
US20090147272A1 (en) * | 2007-12-05 | 2009-06-11 | Microvision, Inc. | Proximity detection for control of an imaging device |
US8251517B2 (en) * | 2007-12-05 | 2012-08-28 | Microvision, Inc. | Scanned proximity detection method and apparatus for a scanned image projection system |
US20100321640A1 (en) * | 2009-06-22 | 2010-12-23 | Industrial Technology Research Institute | Projection display chip |
TWI459119B (en) * | 2010-10-05 | 2014-11-01 | Bascule Dev Ag Llc | Mini-color image projector |
FR3068484B1 (en) * | 2017-06-29 | 2019-11-22 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | COLOR PROJECTOR WITH TWO EMISSIVE SCREENS. |
WO2019107044A1 (en) * | 2017-12-01 | 2019-06-06 | 株式会社日立エルジーデータストレージ | Virtual image projection device |
GB2593181B (en) | 2020-03-17 | 2023-11-15 | Plessey Semiconductors Ltd | Micro-LED device |
GB2595715B (en) | 2020-06-04 | 2022-08-17 | Plessey Semiconductors Ltd | Enhanced colour conversion and collimation of micro-LED devices |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6227669B1 (en) * | 1998-05-26 | 2001-05-08 | Industrial Technology Research Institute | Illumination device and image projection apparatus comprising the device |
TW380213B (en) * | 1999-01-21 | 2000-01-21 | Ind Tech Res Inst | Illumination apparatus and image projection apparatus includes the same |
US6819486B2 (en) * | 2001-01-17 | 2004-11-16 | 3M Innovative Properties Company | Projection screen having elongated structures |
JP2002283361A (en) * | 2001-03-23 | 2002-10-03 | Seiko Epson Corp | Microlens array, method for manufacturing the same and optical device |
KR100440959B1 (en) * | 2001-11-08 | 2004-07-21 | 삼성전자주식회사 | Illumination system and projection system employing it |
US6769772B2 (en) * | 2002-10-11 | 2004-08-03 | Eastman Kodak Company | Six color display apparatus having increased color gamut |
KR100619070B1 (en) * | 2005-03-08 | 2006-08-31 | 삼성전자주식회사 | Illuminating unit and projection type image display apparatus employing the same |
-
2005
- 2005-12-28 US US11/319,681 patent/US20070146655A1/en not_active Abandoned
-
2006
- 2006-11-30 DE DE112006003610T patent/DE112006003610T5/en not_active Withdrawn
- 2006-11-30 WO PCT/US2006/061420 patent/WO2007079299A2/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
US20070146655A1 (en) | 2007-06-28 |
WO2007079299A2 (en) | 2007-07-12 |
DE112006003610T5 (en) | 2008-11-13 |
WO2007079299A3 (en) | 2008-05-22 |
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