US3741623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined lens and reflector
Assignee: Reflex Corp of Canada Ltd
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Filing: 1970-08-14
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Granted: 1973-06-26
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Expires: 1990-08-14
Abstract
Abstract A combined lens and reflector comprising a body of light transmitting material having an outer surface and an inner surface. The inner surface is formed of a plurality of spaced cubic prisms separated by flat areas. Each prism comprises three surfaces intersecting one another to form a cube corner, the lines of intersection of said surfaces extending to a base having six sides comprising alternating long and short sides with each line of intersection extending and intersecting a short side intermediate its ends. A method of making a combined lens and reflector is disclosed wherein a plurality of reflector pins having cubic ends are assembled together, an electroform is formed to produce a body having recesses each of which comprises a cubic shape. The electroform is then machined so that the bases of the recesses define hexagonal shapes having surfaces lying in a common plane. The lines of intersection of the cubic recesses intersect the short sides of the bases.
Inventors
- 👤 M Mihalik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:39
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/12; G02B5/122; G02B5/124; H; H01; H01Q; H01Q15/00; H01Q15/23
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
133 words
A combined lens and reflector comprising: a body of light-transmitting material having an outer surface and an inner surface, said inner surface having a plurality of spaced cubic prisms thereon, each said prism comprising three surfaces intersecting one another to form a cube corner, with lines of intersection extending to a base having six sides comprising three long sides long sides connected by three short sides, each line of intersection extending and intersecting a short side intermediate its end, the sides of the bases of at least some of said prisms being spaced from one another, whereby light may be transmitted freely through the areas of said body between said prisms and light directed against said outer surface and contacting said prisms is redirected outwardly by reflection from the surfaces of said prisms.
Claim 2
Dependent Claim
133 words
A combined lens and reflector comprising: a body of light-transmitting material having an outer surface and an inner surface, said inner surface having a plurality of spaced cubic prisms thereon, each said prism comprising three surfaces intersecting one another to form a cube corner, with lines of intersection extending to a base having six sides comprising three long sides long sides connected by three short sides, each line of intersection extending and intersecting a short side intermediate its end, the sides of the bases of at least some of said prisms being spaced from one another, whereby light may be transmitted freely through the areas of said body between said prisms and light directed against said outer surface and contacting said prisms is redirected outwardly by reflection from the surfaces of said prisms.
Claim 3
Dependent Claim
16 words
The combination set forth in claim 1 wherein the areas between said prisms comprise flat surfaces.
Claim 4
Dependent Claim
17 words
The combination set forth in claim 1 wherein said prisms are uniformly spaced over said inner surface.
Claim 5
Dependent Claim
31 words
The combination set forth in claim 1 wherein said prisms are arranged in rows, adjacent prisms in any row have a long side of said base parallel to a short side.
Claim 6
Dependent Claim
22 words
The combination set forth in claim 4 wherein corresponding lines of intersection of prisms in adjacent rows are parallel to one another.
Claim 7
Dependent Claim
35 words
The combination set forth in claim 4 wherein the long side of the base of one prism is provided adjacent the short side of a base of a corresponding adjacent prism throughout the inner surface.
Claim 8
Dependent Claim
20 words
The combination set forth in claim 4 wherein the distance between the bases of adjacent surfaces is substantially equal throughout.
Claim 9
Dependent Claim
23 words
The combination set forth in claim 4 wherein the corresponding lines of intersection of alternate rows of prisms are parallel to one another.
Claim 10
Dependent Claim
46 words
The combination set forth in claim 4 wherein the corresponding lines of adjacent rows of prisms are such that one line of intersection is parallel to a corresponding line but extends in an opposite direction, another line of intersection is parallel and extends in opposite direction.
Claim 11
Dependent Claim
110 words
The combination set forth in claim 1 wherein the short side of the base of one prism is parallel to the long side of the base of an adjacent prism, said one prism having another long side of the base thereof parallel to the long side, each said prism having a long side of the base thereof extending along a corresponding long side of an adjacent prism, each said prism having two short sides thereof extending along two short sides of a base of adjacent prisms whereby flat areas are provided between adjacent long sides having a greater width than the flat areas provided between adjacent long and short sides.
Claim 12
Dependent Claim
92 words
The combination set forth in claim 1 wherein said prisms are provided in groups along said inner surface, each said group comprising a central prism and six peripheral prisms, the peripheral prisms having two lines of intersection thereof aligned with corresponding lines of the adjacent prisms circumferentially and the other line of intersection thereof extending outwardly therefrom whereby alternate peripheral prisms have a long base adjacent a long base of said central prism and alternate peripheral prisms have a long base adjacent a short side of the base of the central prism.
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) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |