Intermediate optical device

Details Intermediate optical device Intermediate optical device

1987-02-26

1989-02-07

Arnold, Bruce Y.

354402, 354286, G02B 702, G03B 300

Patent

active

048027383

ABSTRACT:
A converter lens interposed between a camera body and an interchangeable lens and having an engagement means at each of the front and rear ends thereof to prevent interconnection with another converter lens. The interconnection of converter lenses are prevented by the engagement of the engagement means at the front end of one converter lens with the engagement means at the rear end of the other converter lens, thereby preventing any increase in mechanical exposure error.

REFERENCES:
patent: 4336991 (1982-06-01), Isobe
patent: 4372663 (1983-02-01), Oshima
patent: 4420239 (1983-12-01), Yasuyuki et al.
patent: 4466019 (1984-08-01), Sakashita
patent: 4548488 (1985-10-01), Honda et al.
patent: 4627699 (1986-12-01), Takagi

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