Method for making a modified cube corner retro-reflective screen
AssigneeEastman Kodak Company
InventorThomas R. Wulff
Life of this patent
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Abstract
This patent discloses methods for modifying cube corner retroreflective patterns by stretching a cube corner retroreflector. Stretching may either permanent through inelastic stretching usually under heat or elastic stretching using a controlled stretching mechanism.
Claims11
A method for making a modified retro-reflective screen having a plurality of cube corner retro-reflectors having internal angles of intersection, comprising the steps of:
- providing a web having a plurality of cube corner retro-reflectors;
- and
- applying tension in at least one direction to said web so as to change the shape of said internal angles of intersection of said cube corner retro-reflectors so that the reflected rays which form a desired image are directed to a new designated area to provide a reflected image which is elongated or expanded over that of a screen not so modified.
A method for providing various reflective image shapes from a retro-reflective screen having a plurality of cube corner retro-reflectors having internal angles of intersection, comprising the steps of:
- providing a web having a plurality of cube corner retro-reflectors;
- controlling the amount of tension applied to said web in at least one direction so as to be able to adjust the shape of said internal angles of intersection of said plurality of cube corner retro-reflectors that the reflected rays which form a desired image are directed to a new designated area to provide a reflected image which is elongated or expanded over that of a screen not so modified.
Dependencies are inferred from the claim text.