US3558230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light beam deflection sensor
Assignee: Verizon Laboratories Inc
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Filing: 1969-05-28
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Granted: 1971-01-26
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Expires: 1989-05-28
Abstract
Abstract AN APPARATUS FOR DETECTING THE TWO-DIMENSIONAL DEFLECTION OF AN INPUT LIGHT BEAM FROM A REFERENCE DIRECTION. THE INPUT BEAM IS DIVIDED INTO FOUR SPLIT BEAMS BY A PRISM BLOCK. EACH OF THE SPLIT BEAMS PASSES THROUGH ONE OF FOUR RULED GRATINGS MOUNTED ON THE BLOCK. DETECTING MEANS RECEIVED THE LIGHT OUTPUTS FROM THE GRATINGS AND COMPARE THEM TO DETERMINE THE INPUT BEAM DEFLECTION.
Inventors
- 👤 Vernon J Fowler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:06
CPC Classifications
G; G01; G01D; G01D5/00; G01D5/26; G01D5/28; G01D5/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |