Patent US4661694A successfully refreshed from Google Patents.
US4661694A
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Infrared streak camera
Assignee: Individual
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Filing: 1985-09-13
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Granted: 1987-04-28
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Expires: 2005-09-13
Abstract
Abstract A non-phase-matchable nonlinear plate such as amorphous zinc sulfide or zinc selenide is inserted in front of a conventional streak image generator with high sensitivity to visible radiation to produce an infrared streak camera arrangement with improved sensitivity and decreased cost.
Inventors
- 👤 Vincent J. Corcoran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:47
CPC Classifications
G; G04; G04F; G04F13/00; G04F13/02; G04F13/026
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
137 words
A streak camera arrangement for viewing a spatial representation of an incident infrared pulse, comprising: a streak generator including a photo-cathode non-responsive to infrared radiation but responsive to visible radiation for producing a beam of electrons from an incident pulse of visible radiation, means for multiplying the intensity of the beam of electrons generated by the photocathode, a phosphor display screen for converting the multiplied beam of electrons into visible radiation, and means for sweeping the multiplied beam of electrons across the display screen to produce a streak image; camera means for recording a streak image produced on the display screen; and a frequency multiplier plate formed from a nonlinear non-phase-matchable material disposed in the path of the incident infrared pulse to convert a portion of the incident infrared pulse into the incident pulse of visible radiation.
Claim 2
Dependent Claim
137 words
A streak camera arrangement for viewing a spatial representation of an incident infrared pulse, comprising: a streak generator including a photo-cathode non-responsive to infrared radiation but responsive to visible radiation for producing a beam of electrons from an incident pulse of visible radiation, means for multiplying the intensity of the beam of electrons generated by the photocathode, a phosphor display screen for converting the multiplied beam of electrons into visible radiation, and means for sweeping the multiplied beam of electrons across the display screen to produce a streak image; camera means for recording a streak image produced on the display screen; and a frequency multiplier plate formed from a nonlinear non-phase-matchable material disposed in the path of the incident infrared pulse to convert a portion of the incident infrared pulse into the incident pulse of visible radiation.
Claim 3
Dependent Claim
36 words
A streak camera arrangement as claimed in claim 1 wherein the photocathode of the streak generator has a response to visible radiation producing more than 200 milliamperes of electron current per watt of incident visible radiation.
Claim 4
Dependent Claim
21 words
A streak camera as claimed in claim 2 wherein the frequency multiplier plate is amorphous zinc sulphide or amorphous zinc selenide.
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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) | 1990-04-27 | 1990-10-27 | 1991-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-27 | 1994-10-27 | 1995-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-27 | 1998-10-27 | 1999-04-28 | $7700.00 | Window Closed / Lapsed |