Portable projector

Details Portable projector Portable projector

1991-11-29

1992-12-08

Cuchlinski, Jr., William A.

Optics: image projectors

Miscellaneous

353 43, 353119, G03B 2100

Patent

active

051701960

ABSTRACT:
A portable projector which can be used at a location where no commercial ac power source is available and can be carried readily, has a battery section for supplying power therefrom, an illuminating section including a lamp for receiving power from the battery section and emitting light therefrom, a picture image holding section for forming a picture image thereon and for being irradiated by light emitted from the irradiating section to pass the light in accordance with the picture image formed thereon, and a lens section for enlarging a picture image of light passing through the picture image holding section. The battery section, illuminating section, picture image holding section and lens section can be removably coupled on a common optical axis to each other.

REFERENCES:
patent: 2764058 (1956-09-01), Ellis
patent: 3078761 (1963-02-01), Zorn
patent: 3539798 (1970-11-01), Perry
patent: 4390257 (1983-06-01), Fernekes et al.
patent: 4756614 (1988-07-01), Kato et al.
patent: 4976429 (1990-12-01), Nagel

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