Visible light reflectors and process of making same

Details Visible light reflectors and process of making same Visible light reflectors and process of making same

1994-04-18

1996-09-03

Phan, James

Optical: systems and elements

Signal reflector

359516, 359534, 359900, 264 19, 4289133, G02B 512

Patent

active

055529330

ABSTRACT:
Light reflective buttons according to this invention are made from a plurality of fused strata, the top stratum having an exposed reflective area, preferably of pleochroic or dichroic material in a plane. Manufacture of the buttons involves stacking the top stratum with the reflective area exposed on top of a sub-stratum, and then heating the complex to a temperature sufficient to fuse the stack. During fusion, the stack forms a dome with a flat base. Sub-strata may be added to the stack as needed prior to heating for strength and/or aesthetic purposes. Preferably the strata are all glass, with the top stratum being a cut or otherwise shaped piece of sheet glass commonly known as "dichroic glass." For a reflective area comprised of a plane of pleochroic or dichroic crystalline material, the temperature at which fusion of the strata occurs is too low to melt the crystalline plane, and so it is substantially unaffected by the heating. Thus, the reflective area holds its shape and may be incorporated into the button in whatever form is desired. Along with decorative uses, these buttons may be used as safety reflectors mounted on objects or clothing worn by persons or animals.

REFERENCES:
patent: 285125 (1883-09-01), Hamann
patent: 1241467 (1917-09-01), Hastings
patent: 2306587 (1938-10-01), Broderson
patent: 2602192 (1948-04-01), Silberkraus
patent: 3871336 (1975-03-01), Bergman
patent: 3901579 (1975-08-01), Demerest

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