US3637285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reflex light reflector
Assignee: Stewart Filmscreen Corp
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Filing: 1970-06-23
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Granted: 1972-01-25
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Expires: 1990-06-23
Abstract
Abstract A reflex light reflector comprising a reflective screen for reflecting both paraxial and normal rays and having a diffusion coating applied to the surface thereof for dispersing light rays reflected by said screen.
Inventors
- 👤 Marshall E Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:26
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/12; G02B5/126; G02B5/128
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
71 words
A reflex-reflective screen comprising, a backing, a layer of light-reflective material on said backing, a plurality of small transparent spherical beads embedded in the layer of reflective material for refracting and reflecting back toward its source a projected beam of light passing through the spheres, and a light diffusion coating overlying the surface of said beads and layer of reflective material for increasing the angle of dispersion of light reflected thereby.
Claim 2
Dependent Claim
71 words
A reflex-reflective screen comprising, a backing, a layer of light-reflective material on said backing, a plurality of small transparent spherical beads embedded in the layer of reflective material for refracting and reflecting back toward its source a projected beam of light passing through the spheres, and a light diffusion coating overlying the surface of said beads and layer of reflective material for increasing the angle of dispersion of light reflected thereby.
Claim 3
Dependent Claim
12 words
A reflex-reflective screen as in claim 1, wherein said backing is flexible.
Claim 4
Dependent Claim
22 words
A reflex-reflective screen as in claim 1, wherein a layer of opaque material is interposed between the backing and the reflective layer.
Claim 5
Dependent Claim
15 words
A reflex-reflective screen as in claim 3, wherein the reflective layer comprises a metallic material.
Claim 6
Dependent Claim
14 words
A reflex-reflective screen as in claim 4, wherein the small spheres comprises glass beads.
Claim 7
Dependent Claim
29 words
A reflex-reflective screen as in claim 1, wherein the diffusion coating comprises a flatting agent dispersed in a lacquer solution and applied evenly to the surface of the screen.
Claim 8
Dependent Claim
29 words
A reflex-reflective screen as in claim 6, wherein the lacquer solution is selected from the group consisting of vinyl acetate, vinyl copolymer, acrylic, nitrocellulose, soya, ethyl cellulose and butyrate.
Claim 9
Dependent Claim
26 words
A reflex-reflective screen as in claim 7, wherein the flatting agent is selected from the group consisting of pyrogenated silica, nondelaquescent silica gel and powdered glass.
Claim 10
Dependent Claim
88 words
A reflex-reflective screen for refracting and reflecting a beam of light projected onto the screen back to its source comprising, a substantially flat planar backing, a layer of opaque material on said backing, a layer of light-reflective material on said opaque layer, a plurality of small transparent spherical beads embedded in said layer of light-reflective material, and a coating of light diffusing material over the exposed surface of said beads and said layer of reflective material for eliminating hot spots in light reflected and refracted by said screen.
Claim 11
Dependent Claim
88 words
A reflex-reflective screen for refracting and reflecting a beam of light projected onto the screen back to its source comprising, a substantially flat planar backing, a layer of opaque material on said backing, a layer of light-reflective material on said opaque layer, a plurality of small transparent spherical beads embedded in said layer of light-reflective material, and a coating of light diffusing material over the exposed surface of said beads and said layer of reflective material for eliminating hot spots in light reflected and refracted by said screen.
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) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |