US4517631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indirect light reflector
Assignee: JW LIGHTING Inc 750 ALMEDA-GENOA ROAD A CORP OF
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Filing: 1984-05-14
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Granted: 1985-05-14
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Expires: 2004-05-14
Abstract
Abstract A reflector for use with a light source in which the light source is shielded from direct view. The reflector provides even illumination, with high efficiency by reflecting light from the light source around the light source rather than to be blocked thereby.
Inventors
- 👤 Jack R. Mullins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:59
CPC Classifications
F; F21; F21V; F21V7/00; F21V7/04; F21V7/08; F21V7/0008; F21V7/09; G; G02; G02B; G02B19/00; G02B19/0004; G02B19/0019; G02B19/0023; G02B19/0033; G02B19/0047; F21S; F21S8/00; F21S8/02; F21S8/026; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
86 words
A reflector for use with a light source comprising: first reflector means having first and second focal points, said light source located at said first focal point, a first surface thereof being opposite said first reflector, for reflecting light originating near said first focal point through said second focal point; and second reflector means disposed opposite a second surface of said light source for reflecting light received from said second surface around said light source and on to said first reflector means for further reflection therefrom.
Claim 2
Dependent Claim
86 words
A reflector for use with a light source comprising: first reflector means having first and second focal points, said light source located at said first focal point, a first surface thereof being opposite said first reflector, for reflecting light originating near said first focal point through said second focal point; and second reflector means disposed opposite a second surface of said light source for reflecting light received from said second surface around said light source and on to said first reflector means for further reflection therefrom.
Claim 3
Dependent Claim
43 words
The lamp according to claim 1 further comprising third reflector means disposed opposite a third surface of said light source for reflecting light received from said third surface around said light source and on to said first reflector means for further reflection therefrom.
Claim 4
Dependent Claim
38 words
The lamp according to claim 2 further comprising a fourth reflector means disposed opposite a fourth surface of said light source for reflecting light received therefrom, said fourth reflector being located between said second and third reflector means.
Claim 5
Dependent Claim
33 words
The reflector according to claim 3 wherein said first reflector means comprises a surface having a substantially semi-elliptical shape, said first and second focal point being the focal point of said first reflector.
Claim 6
Dependent Claim
46 words
The reflector according to claim 4 wherein said lamp has a circular surface, said first surface being opposite said first reflector, said second surface being opposite said second reflector said third surface being opposite said third reflector and said fourth surface being opposite said fourth reflector.
Claim 7
Dependent Claim
11 words
The reflector according to claim 5 wherein said lamp is elongate.
Claim 8
Dependent Claim
48 words
The reflector according to claim 5 wherein said second reflector means comprises a plurality of small planar surfaces adjacent each other, said surfaces being disposed so that each is normal to a corresponding one of a plurality of tangents to said second portion of said light source surface.
Claim 9
Dependent Claim
29 words
The reflector according to claim 5 wherein said second reflector means comprises a curved surface normal to a plurality of tangents to said second surface of said light source.
Claim 10
Dependent Claim
47 words
The lamp according to claim 7 wherein said third reflector means comprises a plurality of substantially planar surfaces adjacent each other, said surfaces being disposed so that each is normal to a corresponding one of a plurality of tangents to said third portion of said lamp surface.
Claim 11
Dependent Claim
29 words
The reflector according to claim 8 wherein said third reflector means comprises a curved surface normal to a plurality of tangents to said third surface of said light source.
Claim 12
Dependent Claim
17 words
The reflector according to claim 9 wherein said adjacent small planar surfaces are substantially continuous and smoothed.
Claim 13
Dependent Claim
14 words
The reflector according to claim 9 wherein said fourth reflector means is substantially planar.
Claim 14
Dependent Claim
14 words
The reflector according to claim 10 wherein said fourth reflector means is substantially planar.
Claim 15
Dependent Claim
38 words
The reflector according to claim 7 wherein said fourth reflector means is at least partially triangular in cross-section for reflecting light received from said fourth surface on to said second and third reflector means for further reflection therefrom.
Claim 16
Dependent Claim
38 words
The reflector according to claim 10 wherein said fourth reflector means is at least partially triangular in cross-section for reflecting light received from said fourth surface on to said second and third reflector means for further reflection therefrom.
Claim 17
Dependent Claim
25 words
The reflector according to claim 7 further comprising a planar surface coupled to said first reflector means near said second focal point for reflecting light.
Claim 18
Dependent Claim
25 words
The reflector according to claim 10 further comprising a planar surface coupled to said first reflector means near said second focal point for reflecing light.
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) | 1988-05-13 | 1988-11-12 | 1989-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-13 | 1992-11-12 | 1993-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-13 | 1996-11-12 | 1997-05-14 | $7700.00 | Window Closed / Lapsed |