Projector having a dynamically positioned shutter
US8376554B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 2010 |
| Grant date | Feb 19, 2013 |
| Priority date | — |
| Expiry date | Dec 20, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/145
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A projector includes: a projection optical device; an exterior housing; a shutter; and a support member, the shutter and support member are provided with an engagement structure including an engagement protrusion which being provided on either one of them, protrudes along a vertical axis, and an engagement groove which being provided on the other, and extending in a direction in which the shutter moves, guides a movement of the engagement protrusion by the engagement protrusion being inserted therein, and the engagement groove is provided in such a way that a start end at which the engagement protrusion is positioned in the closed position is positioned to the projection optical device projection side of a finish end at which the engagement protrusion is positioned in the open position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.