Victor C Czarnecki DeceasedMadison, MS
Victor Czarnecki Phones & Addresses
Madison, MS
1300 Wyndham Dr, Columbia, TN 38401 931-3883891
76 Fairwood Rd, Madison, NJ 07940 973-3770321
Port Charlotte, FL
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Us Patents
Mechanism To Open And Close Iris On Lens
US Patent:
4048641, Sep 13, 1977
Filed:
Jun 14, 1976
Appl. No.:
5/695967
Inventors:
Robert J. Cieplik - Mount Lakes NJ
Victor Czarnecki - Madison NJ
Victor Czarnecki - Madison NJ
Assignee:
Addressograph Multigraph Corporation - Cleveland OH
International Classification:
G03B 2300
US Classification:
354 10
Abstract:
Some photocomposition machines use optics with a variable magnification lens, usually referred to as a variator lens. Because larger size print requires more lumens of power for proper exposure of the photosensitive sheets used in photocomposition machines, the common practice is to employ an iris diaphragm which is coordinated with the size of the projected image. The ratio of the diaphragm opening to the focal length is referred to as the f-number. The invention shows an improved cam operated iris control wherein the cam-to-follower pressure angle is maintained at a minimum and provides a means for enabling the cam follower to traverse the entire cam without binding as the cam follower carriage is moved relative to the driving cam.
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