Image projector and image forming apparatus for image projection

Details Image projector and image forming apparatus for image projection Image projector and image forming apparatus for image projection

1994-03-18

1995-05-09

Cuchlinski, Jr., William A.

Optics: image projectors

Miscellaneous

353DIG3, G03B 2128

Patent

active

054144817

ABSTRACT:
In an image projector and an image forming apparatus for image projection, after a document has been laid on a glass platen, a voltage is applied from a power source to transparent electrodes respectively formed on the upper and lower surfaces of a combined polymer and liquid crystal film. As a scanner scans the document, the resulting reflection from the document scans the film. As a result, an image matching the document in tonality is formed in the film in the form of a transmittance distribution and in the original scale. After the document has been removed from the glass platen, a lamp included in an illumination unit is turned on to project the image held in the film onto a screen in an enlarged scale via mirrors and a lens which are included in a projection unit.

REFERENCES:
patent: 4811110 (1989-03-01), Ohmura et al.
patent: 4839731 (1989-06-01), Saka
patent: 4851924 (1989-07-01), Nakamura et al.
patent: 5214457 (1993-05-01), Takanashi et al.

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