Time lapse and exposure control apparatus for camera

Details Time lapse and exposure control apparatus for camera Time lapse and exposure control apparatus for camera

G - Physics

03

B

95/54

G03B 1/00 (2006.01) G03B 17/16 (2006.01) G03B 17/18 (2006.01) G03B 17/40 (2006.01) G03B 17/46 (2006.01)

Patent

CA 1150558

ABSTRACT OF THE DISCLOSURE Apparatus is provided for automatically controlling time lapse and exposure intervals in a photographic camera. The apparatus has a stepper motor controlled by programmable control and timing circuits driving the film transport mechanism. It also has the motor shaft posi- tion fed back to the control circuit by means of an optical encoding disc. An advantage of the present invention is that it is adaptable to be inte- grally built into a camera or, as in the preferred embodiment described, be attached externally to a motion-picture camera without undue modifica- tion thereof. Yet another advantage is that the apparatus according to the present invention utilizes off-the-shelf integrated circuits and com- ponents, save the optical encoder disc.

367641

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