Optics: image projectors – Housing
Patent
1996-04-23
1999-02-09
Dowling, William
Optics: image projectors
Housing
353DIG3, G03B 2114
Patent
active
058684840
ABSTRACT:
A portable overhead projector includes a projection unit having a light source and a projection lens, a stage having a Fresnel lens which has a reflecting surface facing the projection unit, and an arm part for connecting the projection unit with the stage. The arm is sized to accommodate the projection unit and the stage when these are folded thereinto. The size of the projector when the projection unit and the stage are folded into the arm part is not substantially larger than approximately a length of 184 mm, a width of 135 mm, and a thickness of 58 mm. Since each member can be folded, it is possible to make the portable overhead projector compact so that users can conveniently carry such an overhead projector in their bags.
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Chikauchi Masami
Hagari Yasunori
Noda Naohiko
Tachibana Seiji
Yokokawa Hiroyuki
Casio Computer Co. Ltd.
Dowling William
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