Image projecting apparatus furnished with image rotating mechani

Details Image projecting apparatus furnished with image rotating mechani Image projecting apparatus furnished with image rotating mechani

1991-06-11

1992-11-03

Cuchlinski, Jr., William A.

Optics: image projectors

Selective data retrieval

Film strip

353 25, 353 81, 353 27A, G03B 2308

Patent

active

051609509

ABSTRACT:
An image projecting apparatus is disclosed which is provided with a film carrier part for retaining a microfilm, a screen for allowing an image recorded on the film to be projected thereon, and an optical image rotating mechanism disposed in a projected light path extending from a light source to the screen and adapted to rotate the image recorded on the film and consequently allow the image to be projected in a desired posture on the screen. The operator, even when the image on the film is projected in a rotated state, is enabled to move the film in a prescribed direction in accordance with the angle of the rotation of the image produced by the optical image rotating mechanism by keeping an eye on the image projected on the screen and, at the same time, manipulating a key corresponding to the direction in which the image is desired to be observed or to the direction identical to the direction in which the image is desired to be moved.

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patent: 5023657 (1991-06-01), Kuriyama

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