Cube-corner retroreflective articles

Details Cube-corner retroreflective articles Cube-corner retroreflective articles

1993-02-05

1993-12-21

Ben, Loha

Optical: systems and elements

Signal reflector

3-corner retroreflective

359530, 428 40, G02B 5122

Patent

active

052725626

ABSTRACT:
A retroreflective article (30, 50) has opaque pigment particles (38, 58) dispersed in a retroreflective region (33, 53) of a front portion (35, 55) of a sheeting (32, 52) that includes a body portion (34, 54) and a multitude of cube-corner elements (36, 56). The opaque pigment particles (38, 58) scatter white, yellow, or light brown light to allow the retroreflective article to demonstrate improved lightness and, if colored fluorescent, improved fluorescence. The improvement in lightness and fluorescence makes the retroreflective articles more conspicuous to persons during the daytime.

REFERENCES:
patent: 3420597 (1969-01-01), Nellessen et al.
patent: 3684348 (1972-08-01), Rowland
patent: 4025159 (1977-05-01), McGrath
patent: 4055377 (1977-10-01), Erickson et al.
patent: 4618518 (1986-10-01), Pricone et al.
patent: 4763985 (1988-08-01), Bingham
patent: 4801193 (1989-01-01), Martin

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