US3314052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light modulation system
Assignee: International Business Machines Corp
•
Filing: 1963-04-12
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Granted: 1967-04-11
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Expires: 1983-04-12
Abstract
No abstract record available.
Inventors
- 👤 Adolf W Lohmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:31
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/42; G02B27/4266; G11; G11C; G11C13/00; G11C13/04; G11C13/042; H; H04; H04N; H04N5/00; H04N5/76
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A SYSTEM COMPRISING, A POINT SOURCE OF LIGHT, A COLLIMATING LENS, A CONVERGING LENS, A DIFFRACTION GRATING POSITIONED BETWEEN SAID COLLIMATING LENS AND SAID CONVERGING LENS, A SIGNAL INPUT MEANS, MEANS FOR MODULATING THE ANGULAR ORIENTATION OF SAID GRATING IN RESPONSE TO SAID SIGNAL INPUT MEANS, A MASK IN THE FRAUNHOFER PLANE OF SAID CONVERGING LENS, SAID MASK HAVING AREAS OF VARYING TRANSMISSIVITY, AND DETECTING MEANS IN THE IMAGE PLANE OF SAID CONVERGING LENS TO DETECT THE AMOUNT OF LIGHT INCIDENT UPON SAID DETECTING MEANS.
Claim 2
Independent Claim
85 words
A SYSTEM COMPRISING, A POINT SOURCE OF LIGHT, A COLLIMATING LENS, A CONVERGING LENS, A DIFFRACTION GRATING POSITIONED BETWEEN SAID COLLIMATING LENS AND SAID CONVERGING LENS, A SIGNAL INPUT MEANS, MEANS FOR MODULATING THE ANGULAR ORIENTATION OF SAID GRATING IN RESPONSE TO SAID SIGNAL INPUT MEANS, A MASK IN THE FRAUNHOFER PLANE OF SAID CONVERGING LENS, SAID MASK HAVING AREAS OF VARYING TRANSMISSIVITY, AND DETECTING MEANS IN THE IMAGE PLANE OF SAID CONVERGING LENS TO DETECT THE AMOUNT OF LIGHT INCIDENT UPON SAID DETECTING MEANS.
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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) | 1970-04-10 | 1970-10-10 | 1971-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-10 | 1974-10-10 | 1975-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-10 | 1978-10-10 | 1979-04-11 | $7700.00 | Window Closed / Lapsed |