Patent ID: 6030687
Filing Date: 2000-02-29
Classification: B23K,B44C,B44F,G02B,G09F,Y10S,Y10T

Abstract:
A light reflective vision control panel for forming discrete images observable from one side of the panel, comprising:sheet material having light reflective material on one side of said sheet material and having an opaque surface on an opposite side thereof;light-permeable material comprising a first translucent image-forming material overlying said light reflective material and defining a first image on said one side of said sheet material;an array of perforations through the sheet material including through the light reflective and light-permeable materials, said perforations forming 10-68% of open area through said sheet material and said light reflective and light-permeable materials, such that an observer on said one side of said sheet material sees said first image on the light reflective 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 light reflective material and at least in part in registration with the perforations through said sheet material;a light-permeable material comprising a second 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;said second translucent image-forming material being applied on surface portions of said non-perforated light-permeable material both in and out of registration with the perforations through said sheet material such that a portion of said second image-forming material is blocked by non-perforated portions of said sheet material, leaving only portions of said second image-forming material forming said second image visible to the observer on said one side through said perforations;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.