Anamorphic imaging system

Details Anamorphic imaging system Anamorphic imaging system

2006-08-01

2006-08-01

Sugarman, Scott J. (Department: 2873)

Optical: systems and elements

Lens

Anamorphic

C359S710000

Reexamination Certificate

active

07085066

ABSTRACT:
A rear anamorph is disclosed with at least two cylindrically surfaced elements oriented in one direction primarily for squeezing or stretching the image with a ratio of less than 2:1, and at least two cylindrically surfaced elements oriented in a second direction primarily for aberration control. The cylindrically surfaced elements oriented in one direction may be moved as a group along the optical axis, and the cylindrically surfaced elements oriented in the second direction may also be moved as a group along the optical axis. In addition, the entire rear anamorph may be moved together, and a lens unit attached to the rear anamorph may also be moved with respect to the rear anamorph. With these adjustments, the two image planes formed by the two focal lengths created by the cylindrically surfaced elements in the two directions may be aligned with each other and superimposed on the nominal image plane.

REFERENCES:
patent: 2890622 (1959-06-01), Wallin
patent: 3865738 (1975-02-01), Lente
patent: 2004/0196570 (2004-10-01), Nurishi
“The Proposed Trilent-35 System,” by Miklos Lente,American Cinematographer, Jun. 1976 (4 pp).
“Three-Perf In The Future?,” by Rune Ericson,American Cinematographer, Jul. 1986 (4 pp).
“A Universal Format For Film Production,” by N. D. Bernstein et al,Journal Of The SMPTE, vol. 82, Sep. 1973 (3 pp).
“Shiga Rear Anamorph,”Lens Diagram And Optical Prescription(2 pp), Dec. 1997.

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