WO2005076869A3 - Compact electronic viewfinder - Google Patents

Compact electronic viewfinder Download PDF

Info

Publication number
WO2005076869A3
WO2005076869A3 PCT/US2005/003250 US2005003250W WO2005076869A3 WO 2005076869 A3 WO2005076869 A3 WO 2005076869A3 US 2005003250 W US2005003250 W US 2005003250W WO 2005076869 A3 WO2005076869 A3 WO 2005076869A3
Authority
WO
WIPO (PCT)
Prior art keywords
electronic viewfinder
microdisplay
optical
folded
design
Prior art date
Application number
PCT/US2005/003250
Other languages
French (fr)
Other versions
WO2005076869A2 (en
Inventor
Mark Handschy
Paul Weissman
Original Assignee
Displaytech Inc
Mark Handschy
Paul Weissman
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 Displaytech Inc, Mark Handschy, Paul Weissman filed Critical Displaytech Inc
Publication of WO2005076869A2 publication Critical patent/WO2005076869A2/en
Publication of WO2005076869A3 publication Critical patent/WO2005076869A3/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/14—Viewfinders
    • 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
    • G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
    • G02B27/283—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining
    • 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
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/02—Viewfinders
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof

Abstract

An electronic viewfinder with a reflective microdisplay and associated optical elements in a design that utilizes one or more folded optical paths to achieve a compact size and volume that may have a dimension of less than 10 millimeters per side. Moreover, the optical design may have an effective focal length that is greater than the spacing of the optical elements from the microdisplay. Various embodiments include a pancake window arrangement with reflective surfaces that are spaced apart from each other and cube beamsplitter eyepieces with folded paths.
PCT/US2005/003250 2004-02-04 2005-02-03 Compact electronic viewfinder WO2005076869A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US54207404P 2004-02-04 2004-02-04
US60/542,074 2004-02-04

Publications (2)

Publication Number Publication Date
WO2005076869A2 WO2005076869A2 (en) 2005-08-25
WO2005076869A3 true WO2005076869A3 (en) 2006-02-02

Family

ID=34860258

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2005/003250 WO2005076869A2 (en) 2004-02-04 2005-02-03 Compact electronic viewfinder

Country Status (2)

Country Link
US (1) US7206134B2 (en)
WO (1) WO2005076869A2 (en)

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Also Published As

Publication number Publication date
US20050286135A1 (en) 2005-12-29
US7206134B2 (en) 2007-04-17
WO2005076869A2 (en) 2005-08-25

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