WO2007015141A3 - Laser illuminator - Google Patents

Laser illuminator Download PDF

Info

Publication number
WO2007015141A3
WO2007015141A3 PCT/IB2006/002093 IB2006002093W WO2007015141A3 WO 2007015141 A3 WO2007015141 A3 WO 2007015141A3 IB 2006002093 W IB2006002093 W IB 2006002093W WO 2007015141 A3 WO2007015141 A3 WO 2007015141A3
Authority
WO
WIPO (PCT)
Prior art keywords
esbg
laser
speckle
variable
laser source
Prior art date
Application number
PCT/IB2006/002093
Other languages
French (fr)
Other versions
WO2007015141A8 (en
WO2007015141A2 (en
Inventor
Milan Momcilo Popovich
Original Assignee
Milan Momcilo Popovich
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 Milan Momcilo Popovich filed Critical Milan Momcilo Popovich
Publication of WO2007015141A2 publication Critical patent/WO2007015141A2/en
Publication of WO2007015141A3 publication Critical patent/WO2007015141A3/en
Publication of WO2007015141A8 publication Critical patent/WO2007015141A8/en

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

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 WO2007015141A2 (en)

Applications Claiming Priority (2)

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

Publications (3)

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

Family

ID=37622085

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2006/002093 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
JP7153482B2 (en) 2017-07-31 2022-10-14 三星電子株式会社 Metaprojector and electronic device including the same

Families Citing this family (49)

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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
US11726332B2 (en) 2009-04-27 2023-08-15 Digilens Inc. Diffractive projection apparatus
US9335604B2 (en) 2013-12-11 2016-05-10 Milan Momcilo Popovich Holographic waveguide display
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
WO2016020630A2 (en) 2014-08-08 2016-02-11 Milan Momcilo Popovich Waveguide laser illuminator incorporating a despeckler
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
WO2013102759A2 (en) 2012-01-06 2013-07-11 Milan Momcilo Popovich Contact image sensor using switchable bragg gratings
EP2842003B1 (en) 2012-04-25 2019-02-27 Rockwell Collins, Inc. Holographic wide angle display
WO2013167864A1 (en) 2012-05-11 2013-11-14 Milan Momcilo Popovich 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
WO2014188149A1 (en) 2013-05-20 2014-11-27 Milan Momcilo Popovich Holographic waveguide eye tracker
US9727772B2 (en) 2013-07-31 2017-08-08 Digilens, Inc. Method and apparatus for contact image sensing
WO2016020632A1 (en) 2014-08-08 2016-02-11 Milan Momcilo Popovich Method for holographic mastering and replication
US10241330B2 (en) 2014-09-19 2019-03-26 Digilens, Inc. 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
US20180275402A1 (en) 2015-01-12 2018-09-27 Digilens, Inc. Holographic waveguide light field displays
CN111323867A (en) 2015-01-12 2020-06-23 迪吉伦斯公司 Environmentally isolated waveguide display
JP6867947B2 (en) 2015-01-20 2021-05-12 ディジレンズ インコーポレイテッド Holographic waveguide rider
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
WO2016156776A1 (en) 2015-03-31 2016-10-06 Milan Momcilo Popovich Method and apparatus for contact image sensing
JP6598269B2 (en) 2015-10-05 2019-10-30 ディジレンズ インコーポレイテッド Waveguide display
US10983340B2 (en) 2016-02-04 2021-04-20 Digilens Inc. Holographic waveguide optical tracker
JP6895451B2 (en) 2016-03-24 2021-06-30 ディジレンズ インコーポレイテッド Methods and Devices for Providing Polarized Selective Holography Waveguide Devices
EP3433658B1 (en) 2016-04-11 2023-08-09 DigiLens, Inc. Holographic waveguide apparatus for structured light projection
US11513350B2 (en) 2016-12-02 2022-11-29 Digilens Inc. Waveguide device with uniform output illumination
US10545346B2 (en) 2017-01-05 2020-01-28 Digilens Inc. Wearable heads up displays
WO2019079350A2 (en) 2017-10-16 2019-04-25 Digilens, Inc. Systems and methods for multiplying the image resolution of a pixelated display
WO2019136476A1 (en) 2018-01-08 2019-07-11 Digilens, Inc. Waveguide architectures and related methods of manufacturing
KR20200108030A (en) 2018-01-08 2020-09-16 디지렌즈 인코포레이티드. System and method for high throughput recording of holographic gratings in waveguide cells
WO2019178614A1 (en) 2018-03-16 2019-09-19 Digilens Inc. Holographic waveguides incorporating birefringence control and methods for their fabrication
US11402801B2 (en) 2018-07-25 2022-08-02 Digilens Inc. Systems and methods for fabricating a multilayer optical structure
WO2020168348A1 (en) 2019-02-15 2020-08-20 Digilens Inc. Methods and apparatuses for providing a holographic waveguide display using integrated gratings
KR20210134763A (en) 2019-03-12 2021-11-10 디지렌즈 인코포레이티드. Holographic waveguide backlights and related manufacturing methods
US20200386947A1 (en) 2019-06-07 2020-12-10 Digilens Inc. Waveguides Incorporating Transmissive and Reflective Gratings and Related Methods of Manufacturing
KR20220038452A (en) 2019-07-29 2022-03-28 디지렌즈 인코포레이티드. Method and apparatus for multiplying the image resolution and field of view of a pixelated display
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
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
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
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

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US6738105B1 (en) * 2000-11-02 2004-05-18 Intel Corporation Coherent light despeckling

Patent Citations (3)

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US4006967A (en) * 1975-04-23 1977-02-08 Battelle Memorial Institute Directing optical beam
US6738105B1 (en) * 2000-11-02 2004-05-18 Intel Corporation Coherent light despeckling
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Non-Patent Citations (1)

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Title
V.M. KOTOV ET AL.: "Reflection of an optical beam having speckles from a 'thick' acoustic grating", QUANTUM ELECTRONCS, vol. 33, no. 12, December 2003 (2003-12-01), UK, pages 1111 - 1112, XP009077581 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7153482B2 (en) 2017-07-31 2022-10-14 三星電子株式会社 Metaprojector and electronic device including the same

Also Published As

Publication number Publication date
WO2007015141A8 (en) 2011-03-31
WO2007015141A2 (en) 2007-02-08

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