Optics: image projectors – Projector or screen removable from common housing
Patent
1978-03-02
1980-07-22
Haroian, Harry N.
Optics: image projectors
Projector or screen removable from common housing
353 79, 353 75, 353 77, 353119, 353 15, G03B 2130
Patent
active
042136792
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 efficiency is also expected.
REFERENCES:
patent: 2482031 (1949-09-01), Rose
patent: 3028790 (1962-04-01), Wade et al.
patent: 3375054 (1968-03-01), Hughes
patent: 3479116 (1969-11-01), Anderson
patent: 3704054 (1972-11-01), Robak
patent: 3715155 (1973-02-01), Grupp
patent: 3746437 (1973-07-01), Pammer et al.
Oie Naoyuki
Sakamoto Kiyoshi
Tsukakoshi Yukio
Haroian Harry N.
Sanyo Electric Co,. Ltd.
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