US3249004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Depth-of-field correction for projection system
Assignee: Brunswick Corp
•
Filing: 1963-10-14
•
Granted: 1966-05-03
•
Expires: 1983-10-14
Abstract
No abstract record available.
Inventors
- 👤 Osmar A Ullrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:07
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/132; A; A63; A63D; A63D5/00; A63D5/04; A63D2005/048; Y; Y10; Y10S; Y10S353/00; Y10S353/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A PROJECTION SYSTEM WHICH COMPRISES A PROJECTION LENS, A PLATEN HAVING A REFLECTING SURFACE FOR RECEIVING AN IMAGE MARKED THEREON, A LIGHT SOURCE AND MEANS ASSOCIATED THEREWITH FOR REFLECTING LIGHT FROM SAID REFLECTING SURFACE THENCE ALONG AN OPTICAL PATH, MEANS MOUNTING THE PROJECTION LENS IN SAID OPTICAL PATH FOR RECEIVING AND FOCUSING LIGHT TRANSMITTED FROM SAID REFLECTING SURFACE THROUGH SAID OPTICAL PATH, MEANS MOUNTING SAID PLATEN IN THE OPTICAL PATH WITH SAID REFLECTING SURFACE AT AN ANGLE RELATIVE TO SAID OPTICAL PATH WHICH IS DIFFERENT FROM THE ANGLE OF SAID LENS RELATIVE TO SAID OPTICAL PATH, LIGHTTRANSMITTING MEANS ON THE PLATEN BETWEEN THE REFLECTING SURFACE AND THE PROJECTION LENS FOR RECEIVING THE PORTION OF THE IMAGE REFLECTED FROM THE PORTION OF THE REFLECTING SURFACE OF SAID PLATEN FARTHEST FROM SAID PROJECTION LENS TO MOVE THE EFFECTIVE IMAGE AS VIEWED BY THE PROJECTOR LENS SUFFICIENT TO PROVIDE GENERALLY UNIFORM DEPTH-OF-FIELD IN THE PROJECTED IMAGE.
Claim 2
Dependent Claim
153 words
A PROJECTION SYSTEM WHICH COMPRISES A PROJECTION LENS, A PLATEN HAVING A REFLECTING SURFACE FOR RECEIVING AN IMAGE MARKED THEREON, A LIGHT SOURCE AND MEANS ASSOCIATED THEREWITH FOR REFLECTING LIGHT FROM SAID REFLECTING SURFACE THENCE ALONG AN OPTICAL PATH, MEANS MOUNTING THE PROJECTION LENS IN SAID OPTICAL PATH FOR RECEIVING AND FOCUSING LIGHT TRANSMITTED FROM SAID REFLECTING SURFACE THROUGH SAID OPTICAL PATH, MEANS MOUNTING SAID PLATEN IN THE OPTICAL PATH WITH SAID REFLECTING SURFACE AT AN ANGLE RELATIVE TO SAID OPTICAL PATH WHICH IS DIFFERENT FROM THE ANGLE OF SAID LENS RELATIVE TO SAID OPTICAL PATH, LIGHTTRANSMITTING MEANS ON THE PLATEN BETWEEN THE REFLECTING SURFACE AND THE PROJECTION LENS FOR RECEIVING THE PORTION OF THE IMAGE REFLECTED FROM THE PORTION OF THE REFLECTING SURFACE OF SAID PLATEN FARTHEST FROM SAID PROJECTION LENS TO MOVE THE EFFECTIVE IMAGE AS VIEWED BY THE PROJECTOR LENS SUFFICIENT TO PROVIDE GENERALLY UNIFORM DEPTH-OF-FIELD IN THE PROJECTED IMAGE.
References Cited (Backward Citations)
US1319292A
Cited
US2685227A
Cited
US2821108A
Cited
US2858731A
Cited
GB929675A
Cited
US3138059A
Cited
US3174414A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |