1979-05-29
1981-06-16
Corbin, John K.
350463, 350469, G02B 934, G02B 964, G02B 1320
Patent
active
042734240
ABSTRACT:
A variable aberration lens system usable not only as a general photographic lens but also a soft focus lens is provided. The variable aberration lens system includes at least a variable meniscus-shaped air space and cementing surface which are respectively concave against a stop provided therein. A very high resolving power and high contrast can be obtained when the variable aberration lens system is used as the general photographic lens, and a photograph in which an out focus image of the background or foreground is fine can be obtained by varying the width of the air space when the variable aberration lens system is used as the soft focus lens.
REFERENCES:
patent: 1463132 (1923-07-01), Graf
patent: 3152211 (1964-10-01), Cox et al.
patent: 3447861 (1969-06-01), Schlegel
patent: 4124276 (1978-11-01), Okano et al.
Corbin John K.
Mamiya Koki Kabushiki Kaisha (Mamiya Camera Co., Ltd.)
Sugarman Scott J.
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