US3273458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical delay system for providing eye protection against intense light
Assignee: Individual
•
Filing: 1964-09-28
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Granted: 1966-09-20
•
Expires: 1984-09-28
Abstract
No abstract record available.
Inventors
- 👤 Hans W Kohler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:30
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/20; G02B5/22; G02B5/23
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
IN COMBINATION WITH AN OPTICAL VIEWING DEVICE HAVING AN OBJECTIVE LENS AND AN EYEPIECE LENS, AN ELECTROOPTICAL SYSTEM FOR PROTECTING AN OBSERVER AGAINST HARMFUL AND BLINDING EFFECTS OF INTENSE LIGHT THAT MAY BE PRODUCED BY LASER BEAMS WHICH IMPINGE UPON THE OPTICAL VIEWING DEVICE OR BY ATOMIC OR NUCLEAR EXPLOSIONS COMPRISING: (A) AN OPTICAL DELAY MEANS FOR RECEIVING LIGHT FROM SAID OBJECTIVE LENS AND FOR PROVIDING A SHORT TIME DELAY IN THE TRANSMISSION THERETHROUGH OF LIGHT SO RECEIVED, (B) AN INERTIA-FREE OPTICAL SHUTTER BETWEEN SAID OPTICAL DELAY MEANS AND SAID EYEPIECE LENS, SAID INERTIAFREE OPTICAL SHUTTER BEING NORMALLY OPEN PERMITTING FREE TRANSMISSION OF LIGHT THERETHROUGH FROM SAID OPTICAL DELAY MEANS TO SAID EYEPIECE LENS, AND (C) MEANS CONNECTED TO SAID INERTIA-FREE OPTICAL SHUTTER FOR DETECTING THE INTENSITY OF THE LIGHT IMPINGING ON SAID OBJECTIVE LENS AND CAUSING SAID INERTIAFREE OPTICAL SHUTTER TO CLOSE WHEN THE LIGHT INTENSITY EXCEEDS A PREDETERMINED MAXIMUM.
Claim 2
Dependent Claim
151 words
IN COMBINATION WITH AN OPTICAL VIEWING DEVICE HAVING AN OBJECTIVE LENS AND AN EYEPIECE LENS, AN ELECTROOPTICAL SYSTEM FOR PROTECTING AN OBSERVER AGAINST HARMFUL AND BLINDING EFFECTS OF INTENSE LIGHT THAT MAY BE PRODUCED BY LASER BEAMS WHICH IMPINGE UPON THE OPTICAL VIEWING DEVICE OR BY ATOMIC OR NUCLEAR EXPLOSIONS COMPRISING: (A) AN OPTICAL DELAY MEANS FOR RECEIVING LIGHT FROM SAID OBJECTIVE LENS AND FOR PROVIDING A SHORT TIME DELAY IN THE TRANSMISSION THERETHROUGH OF LIGHT SO RECEIVED, (B) AN INERTIA-FREE OPTICAL SHUTTER BETWEEN SAID OPTICAL DELAY MEANS AND SAID EYEPIECE LENS, SAID INERTIAFREE OPTICAL SHUTTER BEING NORMALLY OPEN PERMITTING FREE TRANSMISSION OF LIGHT THERETHROUGH FROM SAID OPTICAL DELAY MEANS TO SAID EYEPIECE LENS, AND (C) MEANS CONNECTED TO SAID INERTIA-FREE OPTICAL SHUTTER FOR DETECTING THE INTENSITY OF THE LIGHT IMPINGING ON SAID OBJECTIVE LENS AND CAUSING SAID INERTIAFREE OPTICAL SHUTTER TO CLOSE WHEN THE LIGHT INTENSITY EXCEEDS A PREDETERMINED MAXIMUM.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |