Projector
US4213679A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1978 |
| Grant date | Jul 22, 1980 |
| Priority date | — |
| Expiry date | Mar 2, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/30
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A motion picture projector in which projector mechanisms are incorporated in the body of a carrying case, the opening of which is covered by a panel structure on which a reel setting portion and an operation board are disposed. The panel structure is provided with a projection window through which a light beam from the projector mechanisms is projected. A cover attached to the case body by hinge means is provided in the inside thereof with a rear-projection screen assembly, which is adapted to engage the case body and to be supported in a predetermined angle together with the case cover when unfolded. A light beam from the projection window is reflected by a mirror disposed in the inside of the case cover so as to be projected on the screen assembly. A projector in accordance with the present invention is formed in a readily portable shape and has high versatility because films wound upon usual open-type reels are available. In addition, the projected image is easy to see because of the large screen size. A generally available attache case can be used instead of a specially designed case, and the use of such ready-made case results in a reduced manufacturing cost. High operation ef…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.