초록 ▼

A retroreflective vision control panel which includes an opaque sheet material coated with retroreflective light reflecting particles and a dark opaque color on the reverse side thereof, and an image formed over top the retroreflective particles using colored light permeable translucent inks or film

A retroreflective vision control panel which includes an opaque sheet material coated with retroreflective light reflecting particles and a dark opaque color on the reverse side thereof, and an image formed over top the retroreflective particles using colored light permeable translucent inks or films to form an image thereon. The opaque sheet and image have a plurality of perforations spaced therethrough. Translucent light-permeable sheet material is provided on the back side of the panel and overlaid on one or the other side with translucent inks to form a second image. An observer on the front side of the panel will observe one or the other of the images, depending upon the relative intensity of the light incident on the front and back sides of the panel.

대표청구항 ▼

[ I claim:] [1.] A retroreflective vision control panel for forming discrete images observable from one side of the panel, comprising:sheet material having retroreflective material on one side of said sheet material and having an opaque surface on an opposite side thereof;light-permeable material co

[ I claim:] [1.] A retroreflective vision control panel for forming discrete images observable from one side of the panel, comprising:sheet material having retroreflective material on one side of said sheet material and having an opaque surface on an opposite side thereof;light-permeable material comprising a translucent image-forming material overlying said retroreflective material and defining a first image on said one side of said sheet material;an array of laser-formed perforations through the sheet material including through the retroreflective and light-permeable materials, said perforations forming 10-68% of open area through said sheet material and said retroreflective and light-permeable materials, such that an observer on said one side of said sheet material sees said first image on the retroreflective material formed by said translucent material dependent on the relative intensity of light incident on opposite sides of the panel;a non-perforated light-permeable material on a side of the sheet material opposite said retroreflective material and at least in part in registration with the perforations through said sheet material;a light-permeable material comprising a translucent image-forming material on said non-perforated light-permeable material and defining a second image such that an observer on said one side of said sheet material sees said second image through said perforations dependent on the relative intensity of the light incident on opposite sides of the panel;whereby the relative intensities of light incident on opposite sides of the panel determine the visibility of one or the other of said first and second images from said one side of said panel.