Patent US3883731A successfully refreshed from Google Patents.
US3883731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light source with high efficiency light collection means
Assignee: Tinsley Laboratories Inc
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Filing: 1974-04-26
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Granted: 1975-05-13
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Expires: 1994-04-26
Abstract
Abstract A reflector structure comprising a stepped, annular reflective member which may be formed by a joined series of adjacent, coaxial, annular reflective members of increasing radius, from rear to front, with each annular member provided with a rectangular cross section such that pairs of adjacent members each form at least one annular corner reflector, i.e., a stepped or right angle reflector.
Inventors
- 👤 Harvey L Morton
- 👤 Bradley H Oland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:00
CPC Classifications
F; F21; F21V; F21V7/00; F21V7/04
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
128 words
A reflector for an axial light source comprising, a conical light transmissive body having a first index of refraction, said conical body having an axially extending aperture therethrough for accommodating a coaxially extending light source, an apex end and an output end opposite the apex end, and a conical surface inclined with respect to a coaxially extending light source at an angle for forwardly reflecting light rays directed thereon; reflector means surrounding said conical surface and spaced therefrom for reflecting light escaping from said conical body back into said body; and a medium having a second index of refraction greater than the first index of refraction within the space between said conical body and said reflector means, said medium surrounding the conical body and being in interface therewith.
Claim 2
Dependent Claim
128 words
A reflector for an axial light source comprising, a conical light transmissive body having a first index of refraction, said conical body having an axially extending aperture therethrough for accommodating a coaxially extending light source, an apex end and an output end opposite the apex end, and a conical surface inclined with respect to a coaxially extending light source at an angle for forwardly reflecting light rays directed thereon; reflector means surrounding said conical surface and spaced therefrom for reflecting light escaping from said conical body back into said body; and a medium having a second index of refraction greater than the first index of refraction within the space between said conical body and said reflector means, said medium surrounding the conical body and being in interface therewith.
Claim 3
Dependent Claim
48 words
The apparatus of claim 19 wherein said reflector means comprises a series of juxtaposed annular mirrors of decreasing radii from the conical output end to the apex end, coaxial with said conical surface for reflecting light rays directed from a coaxially extending light source toward said conical apex.
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) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |