Patent US3586895A successfully refreshed from Google Patents.
US3586895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photocathode of light fibers having ends terminating in truncated corner cubes
Assignee: Optics Tech Inc
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Filing: 1968-05-08
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Granted: 1971-06-22
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Expires: 1988-05-08
Abstract
Abstract A multiple total reflection optical device is disclosed with angled ends on optical wave guides in a bundle of optical wave guides. In one embodiment a photocathode imaging system is disclosed wherein the terminal fused plate of a fiber optic bundle is selectively etched to produce a taper at the end of each fiber which is then coated with a photocathode material. Light conducted through the fibers undergoes multiple total reflections down the terminal taper and is dissipated with high efficiency in the photocathode material. The tapered ends can be cones, corner cubes or other shapes.
Inventors
- 👤 Hal L Sowers
- 👤 John T Balkwill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:01
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/38; G; G02; G02B; G02B6/00; G02B6/04; G02B6/06; H01J29/86; H01J29/89; H01J29/892
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A photocathode imaging system comprising: a fiber optic fused plate having a plurality of coated optical fibers fused together to form at one end a plate surface adapted to receive an image to be intensified, each of said fibers terminating at the other end in a terminating surface positioned at an angle to the axis of said fibers and formed to provide multiple reflections of light received from said image surface: each angled terminating surface being a corner cube truncated to provide a culminating face perpendicular to the axis of said fibers, and each said terminating surface being coated with a photocathode material; an anode spaced from said photocathode coated plate surface; and a vacuum envelope enclosing said photocathode coated surface and said anode.
Claim 2
Dependent Claim
124 words
A photocathode imaging system comprising: a fiber optic fused plate having a plurality of coated optical fibers fused together to form at one end a plate surface adapted to receive an image to be intensified, each of said fibers terminating at the other end in a terminating surface positioned at an angle to the axis of said fibers and formed to provide multiple reflections of light received from said image surface: each angled terminating surface being a corner cube truncated to provide a culminating face perpendicular to the axis of said fibers, and each said terminating surface being coated with a photocathode material; an anode spaced from said photocathode coated plate surface; and a vacuum envelope enclosing said photocathode coated surface and said anode.
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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |