REFLEX LIGHT REFLECTOR

• US 3,637,285 A
• Filed: 06/23/1970
• Issued: 01/25/1972
• Est. Priority Date: 06/23/1970
• Status: Expired due to Term

• Current Assignee: Marshall E. Stewart
• Original Assignee: Marshall E. Stewart
• Inventors: Stewart, Marshall E.
• Primary Examiner(s): Schonberg, David
• Assistant Examiner(s): Tokar, Michael J.
• Application Number:
  US05/049,029
• Time in Patent Office: 581 Days
• Field of Search: 350/188,276,283,117,123,126,97-109
• US Class Current: 359/538
• CPC Class Codes: G02B 5/128 transparent spheres being embedded in matrix

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.

Claims

1. 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.

2. A reflex-reflective screen as in claim 1, wherein said backing is flexible.

3. A reflex-reflective screen as in claim 1, wherein a layer of opaque material is interposed between the backing and the reflective layer.

4. A reflex-reflective screen as in claim 3, wherein the reflective layer comprises a metallic material.

5. A reflex-reflective screen as in claim 4, wherein the small spheres comprises glass beads.

6. 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.

7. 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.

8. 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.

9. 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.