Patent US3701898A successfully refreshed from Google Patents.
US3701898A
Expired / Lapsed
US
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Light reflector system
Assignee: Esquire Inc
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Filing: 1970-07-29
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Granted: 1972-10-31
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Expires: 1990-07-29
Abstract
Abstract A light reflector for a light source having flat sided reflecting surfaces, the corners also being reflecting surfaces, each corner having its smallest dimension in the plane of the reflector opening and gradually widening toward the base of the reflector along lines permitting primary reflections emitting from the corners to pass directly through the reflector opening without further reflection. Additional slanted, flat side and corner pieces provide for further primary reflection emissions. Also, approximately placed light shields screen direct emissions from the light source and from primary emissions near the reflector edges without interferring with direct emissions through the center of the reflector opening.
Inventors
- 👤 Albert C Mcnamara Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:35
CPC Classifications
F; F21; F21V; F21V7/00; F21V7/04; F21V7/05
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
186 words
A light reflector for carrying a mounted light source therein and having a rectangular opening through which light from the source is emitted, comprising flat first and second reflectors slanted to cause at least some primary reflections of the source to be emitted through the opening, said reflectors aligned substantially at a right angle to each other and meeting along a line and defining a first corner at the opening, a flat third reflector opposite said first reflector and meeting along a line and defining a second corner with said second reflector at the opening, a flat fourth reflector opposite said second reflector and meeting along a line and defining a third corner with said first reflector at the opening, the primary reflection exit pupil ray of said light source to said second corner intersecting said first reflector at a first point, the primary reflection exit pupil ray of said light source to said third corner intersecting said second reflector at a second point, and a corner reflector defined by the plane at least approximately consisting of said first corner and said first and second points.
Claim 2
Dependent Claim
186 words
A light reflector for carrying a mounted light source therein and having a rectangular opening through which light from the source is emitted, comprising flat first and second reflectors slanted to cause at least some primary reflections of the source to be emitted through the opening, said reflectors aligned substantially at a right angle to each other and meeting along a line and defining a first corner at the opening, a flat third reflector opposite said first reflector and meeting along a line and defining a second corner with said second reflector at the opening, a flat fourth reflector opposite said second reflector and meeting along a line and defining a third corner with said first reflector at the opening, the primary reflection exit pupil ray of said light source to said second corner intersecting said first reflector at a first point, the primary reflection exit pupil ray of said light source to said third corner intersecting said second reflector at a second point, and a corner reflector defined by the plane at least approximately consisting of said first corner and said first and second points.
Claim 3
Dependent Claim
72 words
A light reflector as described in claim 1, wherein said opening is substantially square, and another corner reflector substantially identical to said defined corner reflector is located between said second and third reflectors, yet another corner reflector Substantially identical to said defined corner reflector is located between said third and fourth reflectors, and still another corner reflector substantially identical to said defined corner reflector is located between said fourth and first reflectors.
Claim 4
Dependent Claim
44 words
A light reflector as described in claim 1, and further including back side reflectors intersecting said first, second and corner reflectors at lines approximately on the intersection of the primary reflection exit pupil rays of said source and said first, second and corner reflectors.
Claim 5
Dependent Claim
42 words
A light reflector as described in claim 1, and further including shields for blocking the direct light from the source and the primary reflective light near the edges of the opening without disturbing the light emanating from the center of the opening.
Claim 6
Dependent Claim
17 words
A light reflector as described in claim 4, wherein said shields are louvers located inside the opening.
Claim 7
Dependent Claim
26 words
A light reflector as described in claim 5, wherein said shields are light absorptive on the side receiving the direct light and the primary reflective light.
Claim 8
Dependent Claim
29 words
A light reflector as described in claim 6, wherein said shields are light reflective on the side opposite the side receiving the direct light and the primary reflective light.
Claim 9
Dependent Claim
110 words
A light reflector for carrying a mounted light source therein and having a rectangular opening through which light from the source emanates, comprising four reflectors slanted inwardly from the plane of said opening to cause at least some primary reflections of the source to emanate through the opening, said reflectors aligned successively and substantially at right angles to each other in the plane of the opening, and four corner reflectors being disposed one between each of said right-angle aligned pairs and extending inwardly from the plane of said opening, said corner reflectors being wedge-shaped with the smallest dimension thereof at the opening and progressively becoming larger away from said opening.
Claim 10
Dependent Claim
110 words
A light reflector for carrying a mounted light source therein and having a rectangular opening through which light from the source emanates, comprising four reflectors slanted inwardly from the plane of said opening to cause at least some primary reflections of the source to emanate through the opening, said reflectors aligned successively and substantially at right angles to each other in the plane of the opening, and four corner reflectors being disposed one between each of said right-angle aligned pairs and extending inwardly from the plane of said opening, said corner reflectors being wedge-shaped with the smallest dimension thereof at the opening and progressively becoming larger away from said opening.
Claim 11
Dependent Claim
21 words
A light reflector as described in claim 8, wherein said corner reflectors are flat and are attached to ajoining flat reflectors.
Claim 12
Dependent Claim
41 words
A light reflector as described in claim 9, and further including back reflectors intersecting said flat and corner reflectors at lines approximately on the intersection of the primary reflection exit pupil rays of said source and said flat and corner reflectors.
Claim 13
Dependent Claim
42 words
A light reflector as described in claim 9, and further including shields for blocking the direct light from the source and the primary reflective light near the edges of the opening without disturbing the light emanating from the center of the opening.
Claim 14
Dependent Claim
17 words
A light reflector as described in claim 11, wherein said shields are louvers located inside the opening.
Claim 15
Dependent Claim
26 words
A light reflector as described in claim 12, wherein said shields are light absorptive on the side receiving the direct light and the primary reflective light.
Claim 16
Dependent Claim
29 words
A light reflector as described in claim 13, wherein said shields are light reflective on the side opposite the side receiving the direct light and the primary reflective light.
Claim 17
Dependent Claim
135 words
A light reflector for carrying a mounted light source therein and having an opening through which light from the source is emitted, comprising at least first and second adjacent reflectors meeting to form a part of said opening through which light from the source is emitted and being oriented to cause at least some primary reflections of said light source to be emitted through the opening, and a third reflector extending inwardly from the plane of said opening, being adjacent at least one of said first and second reflectors and having sides merging toward a point at a corner of said opening, the exit pupil of each of said two adjacent reflectors permitting the forwardly directed primary light reflections of said light source from said third reflector to emanate through said opening without secondary reflection.
Claim 18
Dependent Claim
135 words
A light reflector for carrying a mounted light source therein and having an opening through which light from the source is emitted, comprising at least first and second adjacent reflectors meeting to form a part of said opening through which light from the source is emitted and being oriented to cause at least some primary reflections of said light source to be emitted through the opening, and a third reflector extending inwardly from the plane of said opening, being adjacent at least one of said first and second reflectors and having sides merging toward a point at a corner of said opening, the exit pupil of each of said two adjacent reflectors permitting the forwardly directed primary light reflections of said light source from said third reflector to emanate through said opening without secondary reflection.
Claim 19
Dependent Claim
20 words
A light reflector as described in claim 15, wherein Said first and second reflectors are slanted inwardly from said opening.
Claim 20
Dependent Claim
46 words
A light reflector as described in claim 16, and further including at least one back reflector disposed in angular relation with said first and second reflectors for emanating with only primary reflection a substantial amount of light initially directed from said source away from said opening.
Claim 21
Dependent Claim
45 words
A light reflector as described in claim 16, and further including at least one shield for blocking the direct light from the source and the primary reflected light near the edges of the opening without disturbing the light emanating from the center of the opening.
Claim 22
Dependent Claim
18 words
A light reflector as described in claim 18, wherein said shield is a louver located inside the opening.
Claim 23
Dependent Claim
56 words
A light reflector as described in claim 16, wherein said third reflector is adjacent said first reflector and not adjacent said second reflector such that the forwardly directed primary reflections from said third reflector directed toward the meeting of said first and second adjacent reflectors define a boundary between said first reflector and said third reflector.
Claim 24
Dependent Claim
132 words
A light reflector for carrying a mounted light source and having a multisided opening through which light from the source is emitted, comprising a plurality of successively adjacent reflectors meeting to form said opening and being slanted inwardly from the plane of said opening, and a plurality of corner reflectors between at least some of said successively adjacent reflectors and extending inwardly from the plane of said opening, said corner reflectors having sides merging toward a point at a corner of said opening and being oriented to reflect light from said source forwardly through said opening, the exit pupil of each of said successively adjacent reflectors at said opening permitting primary light reflections of said light source from each of said corner reflectors to emanate forwardly through said opening without secondary reflection.
Claim 25
Dependent Claim
132 words
A light reflector for carrying a mounted light source and having a multisided opening through which light from the source is emitted, comprising a plurality of successively adjacent reflectors meeting to form said opening and being slanted inwardly from the plane of said opening, and a plurality of corner reflectors between at least some of said successively adjacent reflectors and extending inwardly from the plane of said opening, said corner reflectors having sides merging toward a point at a corner of said opening and being oriented to reflect light from said source forwardly through said opening, the exit pupil of each of said successively adjacent reflectors at said opening permitting primary light reflections of said light source from each of said corner reflectors to emanate forwardly through said opening without secondary reflection.
Claim 26
Dependent Claim
44 words
A light reflector as described in claim 21, and further including back reflectors each being disposed adjacent respective ones of said successively adjacent reflectors for emanating with only primary reflection a substantial amount of light initially directed from said source away from said opening.
Claim 27
Dependent Claim
42 words
A light reflector as described in claim 21, and further including shields for blocking the direct light from the source and the primary reflected light near the edges of the opening without disturbing the light emanating from the center of the opening.
Claim 28
Dependent Claim
17 words
A light reflector as described in claim 23, wherein said shields are louvers located inside the opening.
Claim 29
Dependent Claim
77 words
A light reflector as described in claim 21, wherein said plurality of successively adjacent reflectors includes first and second reflectors meeting at said opening, and said plurality of corner reflectors includes a reflector adjacent said first reflector and not adjacent said second reflector such that the forwardly directed primary reflections from said flat corner reflector directed toward the meeting of said first and second reflectors define a boundary between said first reflector and said flat corner reflector.
Claim 30
Dependent Claim
82 words
A light reflector as described in claim 25, wherein said plurality of successively adjacent reflectors includes a third reflector meeting with said first reflector at said opening, and said plurality of corner reflectors includes a second corner reflector adjacent said first reflector and not adjacent said third reflector such that the forwardly directed primary reflections from said second corner reflector directed toward the meeting of said first and third reflectors define a boundary between said first reflector and said second corner reflector.
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) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |