CA2347198A1 - Scanned beam display with adjustable accommodation - Google Patents

Scanned beam display with adjustable accommodation

Info

Publication number
CA2347198A1
CA2347198A1 CA002347198A CA2347198A CA2347198A1 CA 2347198 A1 CA2347198 A1 CA 2347198A1 CA 002347198 A CA002347198 A CA 002347198A CA 2347198 A CA2347198 A CA 2347198A CA 2347198 A1 CA2347198 A1 CA 2347198A1
Authority
CA
Canada
Prior art keywords
curvature
distance
eye
simulate
virtual object
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.)
Granted
Application number
CA002347198A
Other languages
French (fr)
Other versions
CA2347198C (en
Inventor
Michael Tidwell
Charles D. Melville
Richard S. Johnston
Joel S. Kollin
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.)
University of Washington
Original Assignee
University Of Washington
Michael Tidwell
Charles D. Melville
Richard S. Johnston
Joel S. Kollin
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=22695455&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2347198(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by University Of Washington, Michael Tidwell, Charles D. Melville, Richard S. Johnston, Joel S. Kollin filed Critical University Of Washington
Publication of CA2347198A1 publication Critical patent/CA2347198A1/en
Application granted granted Critical
Publication of CA2347198C publication Critical patent/CA2347198C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
    • G09G3/003—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background to produce spatial visual effects
    • 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
    • G02B27/01—Head-up displays
    • G02B27/017—Head mounted
    • 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
    • G02B27/01—Head-up displays
    • G02B27/017—Head mounted
    • G02B27/0172—Head mounted characterised by optical features
    • 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
    • G02B27/01—Head-up displays
    • G02B27/017—Head mounted
    • G02B27/0176—Head mounted characterised by mechanical features
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/02—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes by tracing or scanning a light beam on a screen
    • G09G3/025—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes by tracing or scanning a light beam on a screen with scanning or deflecting the beams in two directions or dimensions
    • 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
    • G02B27/01—Head-up displays
    • G02B27/017—Head mounted
    • G02B2027/0178—Eyeglass type

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Lenses (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

A scanning beam display 10/50/150 controls the curvature of scanning light wave impinging on the eye to simulate image points of differing depth. To simulate an object at a far distance the generated light waves are flatter. To simulate closer objects, the light wave curvature increases. When changing the curvature of the light waves, the eye responds by altering its focus. The curvature of the light waves thus determines the apparent focal distance from the eye to the virtual object. To vary the curvature, either a variable focus lens 22/320 or a variable index of refraction device 22/330/350 is used.
Alternatively, a moving point source is used. The generated apparent distance of a virtual object is correlated to a detected distance in a background field of view. Intensity of the virtual object is correlated to detected intensity of background light.
CA002347198A 1998-11-09 1999-11-02 Scanned beam display with adjustable accommodation Expired - Fee Related CA2347198C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/188,993 1998-11-09
US09/188,993 US6281862B1 (en) 1998-11-09 1998-11-09 Scanned beam display with adjustable accommodation
PCT/US1999/025787 WO2000028592A1 (en) 1998-11-09 1999-11-02 Scanned beam display with adjustable accommodation

Publications (2)

Publication Number Publication Date
CA2347198A1 true CA2347198A1 (en) 2000-05-18
CA2347198C CA2347198C (en) 2004-04-06

Family

ID=22695455

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002347198A Expired - Fee Related CA2347198C (en) 1998-11-09 1999-11-02 Scanned beam display with adjustable accommodation

Country Status (6)

Country Link
US (5) US6281862B1 (en)
EP (1) EP1138081A4 (en)
JP (1) JP2002529801A (en)
AU (1) AU1907600A (en)
CA (1) CA2347198C (en)
WO (1) WO2000028592A1 (en)

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Also Published As

Publication number Publication date
CA2347198C (en) 2004-04-06
AU1907600A (en) 2000-05-29
US20040196213A1 (en) 2004-10-07
JP2002529801A (en) 2002-09-10
US6388641B2 (en) 2002-05-14
US7230583B2 (en) 2007-06-12
EP1138081A1 (en) 2001-10-04
EP1138081A4 (en) 2004-11-03
US6538625B2 (en) 2003-03-25
WO2000028592A1 (en) 2000-05-18
US20020093467A1 (en) 2002-07-18
US6281862B1 (en) 2001-08-28
US20030142042A1 (en) 2003-07-31
US20010040535A1 (en) 2001-11-15
US6734835B2 (en) 2004-05-11

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