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 Title: |
US5179399:
Theatre in the round projection apparatus and method
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Pringle, David A.; Pacific Palisades, CA 90272
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| Assignee: |
None
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| Published / Filed: |
1993-01-12
/ 1991-01-24
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| Application Number: |
US1991000645232
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| IPC Code: |
Advanced:
G03B 21/56;
G03B 37/04;
Core:
G03B 37/00;
more...
IPC-7:
G03B 21/56;
G03B 37/04;
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| 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;
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| Field of Search: |
353/011,94,79,122,30,48,28,121
352/069,70
359/443,451
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| Priority Number: |
| 1991-01-24 |
US1991000645232 |
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| 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.
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| Attorney, Agent or Firm: |
Ladas & Parry ;
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| Primary / Asst. Examiners: |
Cuchlinski, Jr., William A.; Dowling, William C.
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| Maintenance Status: |
E1 Expired Check current status
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| INPADOC Legal Status: |
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Family Legal Status Report
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| Designated Country: |
AU CA EP JP KR US
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| Family: |
Show 3 known family members
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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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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 5 U.S. patent(s) that reference this one
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