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| Number | Title | Issue Date |
| 7364085 | Identification document with printing that creates moving and three dimensional image effects with pulsed illumination Identification documents have a three dimensional or moving image effect to enable human verification of their authenticity. These effects are created by printing image layers of invisible inks, such as UV or IR fluorescing inks, each depicting an object in varying ... | 04/29/2008 |
| 7061680 | Adjusting contrast in an optical system An improved object projection system provides an observer with a surrounding background that has adjustable contrast levels relative to an object. A transmissive polarizer and a reflective polarizer change relative orientations. The change in orientation causes the ... | 06/13/2006 |
| 6944983 | Changing color object A device displaying a polychromatic effect, comprising a light source a first linear polarizing layer optically coupled to said light source a first bi-refringent layer a second linear polarizing layer a motor coupled to said first linear polarizing layer so that sa... | 09/20/2005 |
| 6053795 | Toy having image mode and changed image mode A toy or novelty article including an image located thereon, having a reflective "mirror" mode and a transmissive mode, such that a generally opaque material is viewable in the transmissive mode. One preferred embodiment includes a generally opaque materi... | 04/25/2000 |
| 5999317 | Toy mirror with transmissive image mode Toy or novelty including a first polarizer and a second polarizer movable relative to the first polarizer. In a first mode, the first and second polarizers interact to be reflective, and in a second mode, the first and second polarizers is transmissive. T... | 12/07/1999 |
| 5191214 | Method of manufacturing design carrier The present invention is summarized as a method of manufacturing a design carrier which is featured in that a desired pattern is drawn on a polarizing plate by heating and another polarizing plate is superposed thereon to constitute one design carrier.... | 03/02/1993 |
| 5165538 | Baseball holder for display purposes The subject apparatus is a ball holder adapted and constructed for display purposes, as used to hold within the confines of the holder a baseball, or other type of ball, to be displayed inside a transparent cover, so as to be viewable from the outside, wi... | 11/24/1992 |
| 4359832 | Light polarizing lamination and system employing same Undesirable visual effects, such as blinking, observed when an animated image produced by means of polarized light is viewed by means of a color television camera or a similar device which is sensitive to the angle of polarization of light which it views,... | 11/23/1982 |
