Chinon Kabushiki Kaisha

Noriyoshi Fujimori

Nobuo Komatsu

Mitsuru Fukushima

A camera viewfinder optical system is interlockingly connected with a rotatable cam ring used to zoom a camera lens barrel system unit forwardly in an optical axial direction thus eliminating a bulky cam portion on the outer surface of the cam ring so a more compact zoom lens barrel unit is possible.

Zoom lens camera viewfinder

A lens barrel unit for a zoom lens camera which is more compact in the axial optical direction in the retracted state because the lens group moving means and linear movement guiding means are juxtaposed along the optical axis. The lens barrel unit also has a reduced outer diameter due to a reduction in the need for a separate outer helicoid portion of the moving means and elimination of guiding grooves on the inside of the fixed barrel unit.

Growing community of inventors

Suwa, Japan

Noriyoshi Fujimori