Image projection apparatus
US6695452B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 22, 2001 |
| Grant date | Feb 24, 2004 |
| Priority date | — |
| Expiry date | Feb 8, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/2066
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A projector having a polymeric housing containing an electrical light source, an image medium support assembly aligned in the light path of the light source, and a lens through which light emanating from the light source exits the housing after passing through an image medium disposed in the image support assembly. The projector is preferably adjustably mounted on a support member comprising a tubular section containing a transformer. The projector can be made with an electric motor inside the housing that causes a wheel comprising multiple fixed images to continuously or intermittently rotate the same or different images sequentially through the light path of the projector. A projector assembly is also disclosed in which a projector is mounted in a frame assembly in combination with a rotating mirror ball that simultaneously redirects the projected image in many different directions and continuously changes the image being projected onto a particular spot on surrounding viewing surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.