Optical apparatus for producing a special photographic effect

Details Optical apparatus for producing a special photographic effect Optical apparatus for producing a special photographic effect

1988-10-25

1990-09-18

Arnold, Bruce Y.

350430, G02B 728

Patent

active

049573543

ABSTRACT:
A soft focus lens comprising a lens for softening arranged to axially move to selectively change the soft focus effect, a lens for focus adjustment arranged to axially move to adjust the focus, a driver for moving the lens for focus adjustment, a selector device for moving the lens for softening to select axial positions and a computing circuit for computing the amount of movement of the lens for focus adjustment to cancel the shift of the focal point resulting from the movement of the lens for softening and producing an output to the driver.

REFERENCES:
patent: 4043642 (1977-08-01), Hirose et al.
patent: 4124276 (1978-11-01), Okano et al.
patent: 4310221 (1982-01-01), Momiyama et al.
patent: 4825237 (1989-04-01), Hatase et al.
patent: 4826301 (1989-05-01), Ikemori

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