Method and apparatus for producing optical illusions
US7762896B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Dec 14, 2006 |
| Grant date | Jul 27, 2010 |
| Priority date | — |
| Expiry date | May 24, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63J21/00
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A method and apparatus for use in connection with a theatrical stage presentation for rendering an actor or object located on the stage visible or invisible at will. The apparatus used to create the illusion includes a strategically located, selectively transparent screen and a large, generally vertically extending mirror. In carrying out the method of the invention, the mirror is controllably moved across the stage at a location intermediate a rear wall and the selectively transparent screen from a first position out of sight of the audience to a second position wherein the mirror is disposed between the rear wall and the selectively transparent screen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.