WO2005088987A3 - Light engine for frame-sequential color projection display system having monochromatic light sources, system and driving method - Google Patents

Light engine for frame-sequential color projection display system having monochromatic light sources, system and driving method Download PDF

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Publication number
WO2005088987A3
WO2005088987A3 PCT/IB2005/050858 IB2005050858W WO2005088987A3 WO 2005088987 A3 WO2005088987 A3 WO 2005088987A3 IB 2005050858 W IB2005050858 W IB 2005050858W WO 2005088987 A3 WO2005088987 A3 WO 2005088987A3
Authority
WO
WIPO (PCT)
Prior art keywords
light
frame
projection display
display system
sequential color
Prior art date
Application number
PCT/IB2005/050858
Other languages
French (fr)
Other versions
WO2005088987A2 (en
Inventor
Hans Zou
Duncan J Anderson
Original Assignee
Koninkl Philips Electronics Nv
Hans Zou
Duncan J Anderson
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 Koninkl Philips Electronics Nv, Hans Zou, Duncan J Anderson filed Critical Koninkl Philips Electronics Nv
Priority to JP2007502487A priority Critical patent/JP2007529035A/en
Priority to EP05708980A priority patent/EP1728395A2/en
Publication of WO2005088987A2 publication Critical patent/WO2005088987A2/en
Publication of WO2005088987A3 publication Critical patent/WO2005088987A3/en

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]
    • H04N9/3141—Constructional details thereof
    • H04N9/315—Modulator illumination systems
    • 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
    • H04N9/3111—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying the colours sequentially, e.g. by using sequentially activated light sources
    • H04N9/3114—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying the colours sequentially, e.g. by using sequentially activated light sources by using a sequential colour filter producing one colour at a time

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Projection Apparatus (AREA)
  • Liquid Crystal (AREA)
  • Led Device Packages (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

A compact light engine (22) for a frame-sequential color projection display system employs sets of monochromatic light sources (26, 27, 28) such as LEDs. The LED sets are incorporated into compact light input modules (23, 24, 25) which include an array of reflectors (29, 30, 31) as light collectors, one for each LED, and a light coupling element (32, 33, 34) for coupling the collected light to a color combiner (35). The color combiner employs dichroic filters (36, 37) to combine the light of different colors into a beam. The beam's light intensity is homogenized by a homogenizing light guide (38). Increased light output is obtained without sacrificing lifetime by pulse-driving the LEDs at 5 or more times the rated max. DC driving current, at a 1/5 duty ratio.
PCT/IB2005/050858 2004-03-11 2005-03-09 Light engine for frame-sequential color projection display system having monochromatic light sources, system and driving method WO2005088987A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2007502487A JP2007529035A (en) 2004-03-11 2005-03-09 Light engine, system, and driving method for frame sequential color projection display system having monochromatic light source
EP05708980A EP1728395A2 (en) 2004-03-11 2005-03-09 Light engine for frame-sequential color projection display system having monochromatic light sources, system and driving method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US55209404P 2004-03-11 2004-03-11
US60/552,094 2004-03-11

Publications (2)

Publication Number Publication Date
WO2005088987A2 WO2005088987A2 (en) 2005-09-22
WO2005088987A3 true WO2005088987A3 (en) 2006-03-02

Family

ID=34961035

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2005/050858 WO2005088987A2 (en) 2004-03-11 2005-03-09 Light engine for frame-sequential color projection display system having monochromatic light sources, system and driving method

Country Status (4)

Country Link
EP (1) EP1728395A2 (en)
JP (1) JP2007529035A (en)
CN (1) CN1947429A (en)
WO (1) WO2005088987A2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4118244B2 (en) * 2004-03-29 2008-07-16 三洋電機株式会社 Illumination device and projection display device
TWI467530B (en) * 2007-04-27 2015-01-01 Chunghwa Picture Tubes Ltd Method for driving display
JP2009092745A (en) 2007-10-04 2009-04-30 Ｎｅｃディスプレイソリューションズ株式会社 Image display device and method of driving light source for the same
JP5495041B2 (en) * 2010-03-31 2014-05-21 カシオ計算機株式会社 projector
WO2014110588A2 (en) * 2013-01-14 2014-07-17 Robe Lighting, Inc. Improved homogenization system for an led luminaire
EP3049858A1 (en) * 2013-12-20 2016-08-03 Huawei Technologies Co., Ltd. Light source apparatus and method for generating a mixed-color light beam
IT201600083994A1 (en) * 2016-08-09 2018-02-09 Clay Paky Spa HEADLAMP, PREFERABLY FROM STAGE
US10883704B2 (en) 2019-03-29 2021-01-05 Robe Lighting S.R.O. Homogenization system for an LED luminaire

Citations (4)

* Cited by examiner, † Cited by third party
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
WO2001043113A1 (en) * 1999-12-09 2001-06-14 Koninklijke Philips Electronics N.V. Display systems incorporating light-emitting diode light source
US20010048560A1 (en) * 2000-05-31 2001-12-06 Yasuyuki Sugano Display apparatus
EP1363460A2 (en) * 2002-05-10 2003-11-19 Seiko Epson Corporation Lighting system and projector

Patent Citations (4)

* Cited by examiner, † Cited by third party
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
WO2001043113A1 (en) * 1999-12-09 2001-06-14 Koninklijke Philips Electronics N.V. Display systems incorporating light-emitting diode light source
US20010048560A1 (en) * 2000-05-31 2001-12-06 Yasuyuki Sugano Display apparatus
EP1363460A2 (en) * 2002-05-10 2003-11-19 Seiko Epson Corporation Lighting system and projector

Also Published As

Publication number Publication date
WO2005088987A2 (en) 2005-09-22
CN1947429A (en) 2007-04-11
JP2007529035A (en) 2007-10-18
EP1728395A2 (en) 2006-12-06

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