Temporary birefringent color image apparatus and method
US8233099B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Apr 22, 2011 |
| Grant date | Jul 31, 2012 |
| Priority date | — |
| Expiry date | Apr 22, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63H33/22
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
Disclosed is an apparatus and method for making temporary colorful birefringent displays. In its preferred embodiment, cellophane 104 is laminated between self-adherent vinyl sheets 108 with non-water soluble adhesive 112 and desired shapes 212 are cut therefrom. Plane polarizing filter 213 is similarly laminated between sheets of self-adherent vinyl 214. One of the polarizer laminations is adhered to a gloss surface such as a window 217. Shapes 212 cut from the cellophane-vinyl laminations are adhered to the polarizer lamination 215. Colors created by the polarized light passing through the birefringent cellophane laminations 100 are viewed through a polarizing analyzer 230 which can be a second lamination of polarizer between self-adherent vinyl sheets and placed over the completed design, or through analyzers held separately from the design such as polarized glasses 218 or hand held viewers 222, 230. Transmissive 214 and reflective 304 and transflective 604 types are disclosed. A less-resilient but less expensive version using low-tack adhesive 710 in place of surface-adherent vinyl 104 is also described. Embodiments and methods are disclosed for using the apparatus as education…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.