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WO2007015141A8 - Laser illuminator - Google Patents

Laser illuminator Download PDF

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Publication number
WO2007015141A8
WO2007015141A8 PCT/IB2006/002093 IB2006002093W WO2007015141A8 WO 2007015141 A8 WO2007015141 A8 WO 2007015141A8 IB 2006002093 W IB2006002093 W IB 2006002093W WO 2007015141 A8 WO2007015141 A8 WO 2007015141A8
Authority
WO
WIPO (PCT)
Prior art keywords
esbg
laser
speckle
variable
laser source
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.)
Ceased
Application number
PCT/IB2006/002093
Other languages
French (fr)
Other versions
WO2007015141A3 (en
WO2007015141A2 (en
Inventor
Milan Momcilo Popovich
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.)
Individual
Original Assignee
Individual
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 GB0516063A external-priority patent/GB0516063D0/en
Application filed by Individual filed Critical Individual
Publication of WO2007015141A2 publication Critical patent/WO2007015141A2/en
Publication of WO2007015141A3 publication Critical patent/WO2007015141A3/en
Anticipated expiration legal-status Critical
Publication of WO2007015141A8 publication Critical patent/WO2007015141A8/en
Ceased 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
    • G02B27/48—Laser speckle optics
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/32—Systems for obtaining speckle elimination
    • 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]
    • H04N9/3129—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] scanning a light beam on the display screen

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Projection Apparatus (AREA)

Abstract

The invention provides an illuminator comprising a laser source and an Electrically Switchable Bragg Grating (ESBG) device disposed along the path of the beam emitted by said laser. The laser and ESBG form part of an apparatus for illuminating an electronic display to provide a viewable image. At least one viewable surface illuminated by laser light exhibits speckle. The ESBG device is configured to generate a time sequential set o f speckle cells by operating on one or both of the optical phase or ray-angular characteristics o incoming light. The optical characteristics of the ESBG are changed by applying a time varying electric field to the ESBG. A human eye observing the display integrates said speckle cells to provide an apparently de-speckled final image. The ESBG device may be characterised as a variable diffractive axicon, a variable sub-wavelength grating or a variable diffractive diffuser. The ESBG device may comprise similarly characterised first and second gratings disposed in series. The laser source and ESBG device may be two-dimensional arrays.
PCT/IB2006/002093 2005-08-04 2006-08-01 Laser illuminator Ceased WO2007015141A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0516063A GB0516063D0 (en) 2005-07-29 2005-08-04 Apparatus for reducing speckle in laser displays
GB0516063.5 2005-08-04

Publications (3)

Publication Number Publication Date
WO2007015141A2 WO2007015141A2 (en) 2007-02-08
WO2007015141A3 WO2007015141A3 (en) 2007-04-12
WO2007015141A8 true WO2007015141A8 (en) 2011-03-31

Family

ID=37622085

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2006/002093 Ceased WO2007015141A2 (en) 2005-08-04 2006-08-01 Laser illuminator

Country Status (1)

Country Link
WO (1) WO2007015141A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11449178B2 (en) 2017-07-31 2022-09-20 Samsung Electronics Co., Ltd. Meta projector and electronic apparatus including the same

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GB0522968D0 (en) 2005-11-11 2005-12-21 Popovich Milan M Holographic illumination device
GB0718706D0 (en) 2007-09-25 2007-11-07 Creative Physics Ltd Method and apparatus for reducing laser speckle
EP1975680A1 (en) * 2007-03-31 2008-10-01 Sony Deutschland Gmbh Illumination device and method for illuminating uniformly an image generating micro display
DE102007045332B4 (en) 2007-09-17 2019-01-17 Seereal Technologies S.A. Holographic display for reconstructing a scene
WO2010023444A1 (en) * 2008-08-27 2010-03-04 Milan Momcilo Popovich Laser display incorporating speckle reduction
US9335604B2 (en) 2013-12-11 2016-05-10 Milan Momcilo Popovich Holographic waveguide display
US11726332B2 (en) 2009-04-27 2023-08-15 Digilens Inc. Diffractive projection apparatus
US11204540B2 (en) 2009-10-09 2021-12-21 Digilens Inc. Diffractive waveguide providing a retinal image
WO2011055109A2 (en) 2009-11-03 2011-05-12 Milan Momcilo Popovich Apparatus for reducing laser speckle
WO2012136970A1 (en) 2011-04-07 2012-10-11 Milan Momcilo Popovich Laser despeckler based on angular diversity
JP2012237812A (en) * 2011-05-10 2012-12-06 Dainippon Printing Co Ltd Illumination device, projection video display device, and light deflecting device
EP2581034B1 (en) * 2011-10-11 2016-02-17 Tobii AB Eye-tracker illumination
US10670876B2 (en) 2011-08-24 2020-06-02 Digilens Inc. Waveguide laser illuminator incorporating a despeckler
US20140204455A1 (en) 2011-08-24 2014-07-24 Milan Momcilo Popovich Wearable data display
WO2016020630A2 (en) 2014-08-08 2016-02-11 Milan Momcilo Popovich Waveguide laser illuminator incorporating a despeckler
WO2013102759A2 (en) 2012-01-06 2013-07-11 Milan Momcilo Popovich Contact image sensor using switchable bragg gratings
CN103562802B (en) 2012-04-25 2016-08-17 罗克韦尔柯林斯公司 Holographic wide-angle display
US9456744B2 (en) 2012-05-11 2016-10-04 Digilens, Inc. Apparatus for eye tracking
US9933684B2 (en) 2012-11-16 2018-04-03 Rockwell Collins, Inc. Transparent waveguide display providing upper and lower fields of view having a specific light output aperture configuration
US10209517B2 (en) 2013-05-20 2019-02-19 Digilens, Inc. Holographic waveguide eye tracker
US9727772B2 (en) 2013-07-31 2017-08-08 Digilens, Inc. Method and apparatus for contact image sensing
US10359736B2 (en) 2014-08-08 2019-07-23 Digilens Inc. Method for holographic mastering and replication
WO2016042283A1 (en) 2014-09-19 2016-03-24 Milan Momcilo Popovich Method and apparatus for generating input images for holographic waveguide displays
US10423222B2 (en) 2014-09-26 2019-09-24 Digilens Inc. Holographic waveguide optical tracker
EP3245444B1 (en) 2015-01-12 2021-09-08 DigiLens Inc. Environmentally isolated waveguide display
US20180275402A1 (en) 2015-01-12 2018-09-27 Digilens, Inc. Holographic waveguide light field displays
CN107533137A (en) 2015-01-20 2018-01-02 迪吉伦斯公司 Holographical wave guide laser radar
US9632226B2 (en) 2015-02-12 2017-04-25 Digilens Inc. Waveguide grating device
WO2016146963A1 (en) 2015-03-16 2016-09-22 Popovich, Milan, Momcilo Waveguide device incorporating a light pipe
US10591756B2 (en) 2015-03-31 2020-03-17 Digilens Inc. Method and apparatus for contact image sensing
WO2017060665A1 (en) 2015-10-05 2017-04-13 Milan Momcilo Popovich Waveguide display
EP3398007B1 (en) 2016-02-04 2024-09-11 DigiLens, Inc. Waveguide optical tracker
WO2017162999A1 (en) 2016-03-24 2017-09-28 Popovich Milan Momcilo Method and apparatus for providing a polarization selective holographic waveguide device
CN109154717B (en) 2016-04-11 2022-05-13 迪吉伦斯公司 Holographic Waveguide Devices for Structured Light Projection
WO2018102834A2 (en) 2016-12-02 2018-06-07 Digilens, Inc. Waveguide device with uniform output illumination
US10545346B2 (en) 2017-01-05 2020-01-28 Digilens Inc. Wearable heads up displays
US10942430B2 (en) 2017-10-16 2021-03-09 Digilens Inc. Systems and methods for multiplying the image resolution of a pixelated display
KR102768598B1 (en) 2018-01-08 2025-02-13 디지렌즈 인코포레이티드. Systems and methods for high-throughput recording of holographic gratings within waveguide cells
KR20250004154A (en) 2018-01-08 2025-01-07 디지렌즈 인코포레이티드. Methods for fabricating optical waveguides
US10914950B2 (en) 2018-01-08 2021-02-09 Digilens Inc. Waveguide architectures and related methods of manufacturing
EP4517439A3 (en) 2018-01-08 2025-05-14 DigiLens Inc. Systems and methods for manufacturing waveguide cells
CN119471906A (en) 2018-03-16 2025-02-18 迪吉伦斯公司 Holographic waveguides incorporating birefringence control and methods for their fabrication
WO2020023779A1 (en) 2018-07-25 2020-01-30 Digilens Inc. Systems and methods for fabricating a multilayer optical structure
WO2020149956A1 (en) 2019-01-14 2020-07-23 Digilens Inc. Holographic waveguide display with light control layer
WO2020163524A1 (en) 2019-02-05 2020-08-13 Digilens Inc. Methods for compensating for optical surface nonuniformity
US20220283377A1 (en) 2019-02-15 2022-09-08 Digilens Inc. Wide Angle Waveguide Display
WO2020168348A1 (en) 2019-02-15 2020-08-20 Digilens Inc. Methods and apparatuses for providing a holographic waveguide display using integrated gratings
WO2020186113A1 (en) 2019-03-12 2020-09-17 Digilens Inc. Holographic waveguide backlight and related methods of manufacturing
WO2020247930A1 (en) 2019-06-07 2020-12-10 Digilens Inc. Waveguides incorporating transmissive and reflective gratings and related methods of manufacturing
CN114341729A (en) 2019-07-29 2022-04-12 迪吉伦斯公司 Method and apparatus for multiplying image resolution and field of view of pixelated displays
JP2022546413A (en) 2019-08-29 2022-11-04 ディジレンズ インコーポレイテッド Vacuum grating and manufacturing method
WO2022140763A1 (en) 2020-12-21 2022-06-30 Digilens Inc. Eye glow suppression in waveguide based displays
US12399326B2 (en) 2021-01-07 2025-08-26 Digilens Inc. Grating structures for color waveguides
EP4288831A4 (en) 2021-03-05 2025-01-15 Digilens Inc. EVACUATED PERIODIC STRUCTURES AND THEIR MANUFACTURING PROCESSES
CN114002857A (en) * 2021-11-06 2022-02-01 电子科技大学 Cone lens laser shaping device and cone lens laser shaping method
CN114236941B (en) * 2022-01-01 2023-03-31 电子科技大学 Dual-frequency liquid crystal cone lens imaging device, imaging method and electronic device
CN114236940B (en) * 2022-01-01 2023-04-07 电子科技大学 Double-frequency liquid crystal cone lens, control method, adjusting device and laser shaping device

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US6738105B1 (en) * 2000-11-02 2004-05-18 Intel Corporation Coherent light despeckling
US6577429B1 (en) * 2002-01-15 2003-06-10 Eastman Kodak Company Laser projection display system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11449178B2 (en) 2017-07-31 2022-09-20 Samsung Electronics Co., Ltd. Meta projector and electronic apparatus including the same

Also Published As

Publication number Publication date
WO2007015141A3 (en) 2007-04-12
WO2007015141A2 (en) 2007-02-08

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