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Title: US5179399: Theatre in the round projection apparatus and method
[ Derwent Title ]


Country: US United States of America

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6 pages

 
Inventor: Pringle, David A.; Pacific Palisades, CA 90272

Assignee: None

Published / Filed: 1993-01-12 / 1991-01-24

Application Number: US1991000645232

IPC Code: Advanced: G03B 21/56; G03B 37/04;
Core: G03B 37/00; more...
IPC-7: G03B 21/56; G03B 37/04;

U.S. Class: Current: 353/094; 352/069; 353/030; 353/079; 353/121; 359/451;
Original: 353/094; 353/079; 353/030; 353/121; 359/451; 352/069;

Field of Search: 353/011,94,79,122,30,48,28,121 352/069,70 359/443,451

Priority Number:
1991-01-24  US1991000645232

Abstract: A projection system for a theatre in the round having a plurality of moving image projectors. The projectors can be either film projectors or television-type projectors. They project in an essentially cylindrical surface which is viewed by people at a viewing location. A lens is associated with each moving image projector, the lens having an optical axis located at or above a top edge of the viewable portion of the cylindrical surface. A source of moving images is associated with each lens, the center of which source is located above the optical axis of the associated lens such that moving images are projected by each lens downwardly toward a portion of the essentially cylindrical surface in an essentially distortion-free manner.

Attorney, Agent or Firm: Ladas & Parry ;

Primary / Asst. Examiners: Cuchlinski, Jr., William A.; Dowling, William C.

Maintenance Status: E1 Expired  Check current status

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Designated Country: AU CA EP JP KR US 

Family: Show 3 known family members

First Claim:
Show all 11 claims
I claim:     1. A projection system for a theatre in the round having a plurality of moving image projectors and an essentially cylindrical surface for display of projected moving images, said projection system comprising:
  • (a) lenses associated with said moving image projectors, the lenses each having an optical axis located at or above a top edge of the moving images projected on said essentially cylindrical surface; and
  • (b) a source of moving images associated with each moving image projector and with each lens, the center of which source is located offset from the optical axis of its associated lens such that moving images are projected by each lens downwardly towards said essentially cylindrical surface in an essentially distortion-free manner.


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Forward References: Show 5 U.S. patent(s) that reference this one

       
U.S. References: Go to Result Set: All U.S. references   |  Forward references (5)   |   Backward references (7)   |   Citation Link

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Patent  Pub.Date  Inventor Assignee   Title
Get PDF - 5pp US2931267  1960-04 Hoch   Means for producing a picture comprising a plurality of adjacent images
Get PDF - 5pp US2942516  1960-06 Disney et al.   Panoramic motion picture presentation arrangement
Get PDF - 6pp US3370505  1968-02 Bryan   Panoramic picture exhibiting apparatus
Get PDF - 10pp US4129365  1978-12 Aversano et al.  Sperry Rand Corporation Wide angle anamorphic display projection system
Get PDF - 9pp US4167311  1979-09 Pund  McDonnell Douglas Corporation Projection system and process
Get PDF - 17pp US4641918  1987-02 Moffatt et al.  EML Environmental Simulations Inc. Portable panoramic theatre
Get PDF - 8pp US4991955  1991-02 Vetter  Todd-AO Corporation Circular projection and display system using segmented trapezoidal screens
       
Foreign References: None

Other Abstract Info: DERABS G92-284814

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