CA2292989A1 - Methode et appareillage de fixation d'un ou de plusieurs ecrans de retroprojection sans discontinuite - Google Patents

Methode et appareillage de fixation d'un ou de plusieurs ecrans de retroprojection sans discontinuite Download PDF

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Publication number
CA2292989A1
CA2292989A1 CA 2292989 CA2292989A CA2292989A1 CA 2292989 A1 CA2292989 A1 CA 2292989A1 CA 2292989 CA2292989 CA 2292989 CA 2292989 A CA2292989 A CA 2292989A CA 2292989 A1 CA2292989 A1 CA 2292989A1
Authority
CA
Canada
Prior art keywords
supporting
rear projector
screen
frame
projector screens
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
CA 2292989
Other languages
English (en)
Other versions
CA2292989C (fr
Inventor
Colin Blehm
Geoff Gosling
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.)
Evans Consoles Corp
Original Assignee
Evans Consoles Inc
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 CA002256871A external-priority patent/CA2256871A1/fr
Application filed by Evans Consoles Inc filed Critical Evans Consoles Inc
Priority to CA 2292989 priority Critical patent/CA2292989C/fr
Publication of CA2292989A1 publication Critical patent/CA2292989A1/fr
Application granted granted Critical
Publication of CA2292989C publication Critical patent/CA2292989C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/10—Projectors with built-in or built-on screen
    • 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
    • H04N9/3147—Multi-projection systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Overhead Projectors And Projection Screens (AREA)
CA 2292989 1998-12-22 1999-12-21 Methode et appareillage de fixation d'un ou de plusieurs ecrans de retroprojection sans discontinuite Expired - Fee Related CA2292989C (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2292989 CA2292989C (fr) 1998-12-22 1999-12-21 Methode et appareillage de fixation d'un ou de plusieurs ecrans de retroprojection sans discontinuite

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CA2,256,871 1998-12-22
CA002256871A CA2256871A1 (fr) 1998-12-22 1998-12-22 Methode de soutien d'un ou plusieurs retroprojecteurs sans discontinuite
CA 2292989 CA2292989C (fr) 1998-12-22 1999-12-21 Methode et appareillage de fixation d'un ou de plusieurs ecrans de retroprojection sans discontinuite

Publications (2)

Publication Number Publication Date
CA2292989A1 true CA2292989A1 (fr) 2000-06-22
CA2292989C CA2292989C (fr) 2009-09-29

Family

ID=31888820

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2292989 Expired - Fee Related CA2292989C (fr) 1998-12-22 1999-12-21 Methode et appareillage de fixation d'un ou de plusieurs ecrans de retroprojection sans discontinuite

Country Status (1)

Country Link
CA (1) CA2292989C (fr)

Also Published As

Publication number Publication date
CA2292989C (fr) 2009-09-29

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Legal Events

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EEER Examination request
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