David S Riddle

US Patent:

44887949, Dec 18, 1984

Filed:

Jun 28, 1982

Appl. No.:

6/392686

Inventors:

Joanne Dolgow - Silver Spring MD
David Riddle - Northridge CA

International Classification:

G03B 1724
G03B 1750
G03B 4100

US Classification:

354 83

Abstract:

Two separate cameras are mounted together and synchronized in focus and shutter actuation to provide simultaneous exposures on separate film or other image recording media. The primary camera includes a system view finder which permits observation of the field of view along the optical axis of the primary camera. A second camera, which has its optical axis oriented parallel to the primary camera axis, has its field of view corrected for parallax distortion by a prism which is selectively attachable to the lens of the second camera. The second camera provides an instant positive print which serves as a proof for the photograph taken by the primary camera. Identical identification numbers are printed on both of the exposures by means of respective LED arrays actuated along with the shutters to print a number representing the count in an electronic counter. The number in the electronic counter is incremented automatically upon each shutter actuation.