Patent US3247609A successfully refreshed from Google Patents.
US3247609A
Expired / Lapsed
US
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Display device
Assignee: Bausch and Lomb Inc
•
Filing: 1962-09-27
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Granted: 1966-04-26
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Expires: 1982-09-27
Abstract
No abstract record available.
Inventors
- 👤 John D Hayes
- 👤 Harold H Schroeder
- 👤 Gligorijevic Slobodan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:55
CPC Classifications
G; G09; G09F; G09F13/00; G09F13/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A DISPLAY DEVICE COMPRISING, SUPPORTING MEANS, A SOURCE OF LIGHT MOUNTED ON SAID SUPPORTING MEANS RADIATING A LUMINOUS FLUX CONTAINING MORE THAN ONE WAVELENGTH OF LIGHT, A PLURALITY OF PANELS FORMING A TRANSPARENT SUBSTRATE EACH DEFINING A PLANAR SURFACE FOR ROTATION RELATIVE TO THE LUMINOUS FLUX, AT LEAST ONE INTERFERENCE FILM SUPPORTED ON EACH OF SAID SUBSTRATE PRODUCING CONSTRUCTIVE AND DESTRUCTIVE INTERFERENCE WITH THE LIGHT RAYS IN THE LUMINOUS FLUX, MOTOR MEANS MOUNTED ON SAID SUPPORTING MEANS ROTATING EACH OF SAID PANELS RELATIVE TO THE LUMINOUS FLUX FOR CONSTANTLY VARYING THE ANGLE OF THE PLANAR SURFACES DEFINING BY SAID SUBSTRATES RELATIVE TO THE LIGHT RAYS IN THE LUMINOUS FLUX AND THEREBY VARYING THE LIGHT PATH LENGTH THROUGH SAID FILMS TO PRODUCE A VARIABLE BRIGHTNESS AND COLOR SENSATION DEPENDING ON THE ANGLE OF THE LIGHT RAYS INCIDENT UPON SAID SUBSTRATE.
Claim 2
Dependent Claim
139 words
A DISPLAY DEVICE COMPRISING, SUPPORTING MEANS, A SOURCE OF LIGHT MOUNTED ON SAID SUPPORTING MEANS RADIATING A LUMINOUS FLUX CONTAINING MORE THAN ONE WAVELENGTH OF LIGHT, A PLURALITY OF PANELS FORMING A TRANSPARENT SUBSTRATE EACH DEFINING A PLANAR SURFACE FOR ROTATION RELATIVE TO THE LUMINOUS FLUX, AT LEAST ONE INTERFERENCE FILM SUPPORTED ON EACH OF SAID SUBSTRATE PRODUCING CONSTRUCTIVE AND DESTRUCTIVE INTERFERENCE WITH THE LIGHT RAYS IN THE LUMINOUS FLUX, MOTOR MEANS MOUNTED ON SAID SUPPORTING MEANS ROTATING EACH OF SAID PANELS RELATIVE TO THE LUMINOUS FLUX FOR CONSTANTLY VARYING THE ANGLE OF THE PLANAR SURFACES DEFINING BY SAID SUBSTRATES RELATIVE TO THE LIGHT RAYS IN THE LUMINOUS FLUX AND THEREBY VARYING THE LIGHT PATH LENGTH THROUGH SAID FILMS TO PRODUCE A VARIABLE BRIGHTNESS AND COLOR SENSATION DEPENDING ON THE ANGLE OF THE LIGHT RAYS INCIDENT UPON SAID SUBSTRATE.
References Cited (Backward Citations)
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Cited
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US2589930A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |