Lens barrel having an aperture information transmission section

Details Lens barrel having an aperture information transmission section Lens barrel having an aperture information transmission section

1978-06-14

1980-05-06

Griffin, Donald A.

354 53, 354273, G03B 1700, G03B 902, G03B 1720

Patent

active

042014620

ABSTRACT:
Full and minimum aperture information is transmitted to a camera body from an interchangeable lens by coding possible combinations of the two values into various discrete single values and transmitting the single value to a decoder in the camera body. For instance, a projection may be provided on the lens barrel having a height corresponding to a particular combination of full and minimum aperture values.

REFERENCES:
patent: 3683765 (1972-08-01), Iura
patent: 3928858 (1975-12-01), Sakurada et al.
patent: 4089010 (1978-05-01), Ito et al.
patent: 4101917 (1978-07-01), Ueda et al.
patent: 4104649 (1978-08-01), Tanaka et al.
patent: 4118726 (1978-10-01), Kuramoto et al.

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