Camera having partially retractable taking optical system

Claim 2

A camera comprising: (a) photographing optical means having an optical system capable of altering the focal length of said photographing optical means; (b) viewfinder means having an optical system capable of altering magnifying power of said viewfinder means corresponding to the focal length of said photographing optical means; (c) an electric motor; (d) first transmission means adapted for the connection of said motor to said photographing optical means; (e) second transmission means adapted for the connection of said motor to said viewfinder means, said second transmission means including means for separating the connection of said motor to said viewfinder means during focusing of said photographing optical means; and (f) control means including circuit means for actuating said motor, the control means causing said motor to simultaneously drive said first and second transmission means for altering the focal length of said photographing optical means and for altering the magnifying power of said viewfinder means.

Claim 3

A camera according to claim 1, wherein said second transmission means includes a cam member and a cam follower member which are coupled to each other during alteration of the focal length and during alteration of the magnification, and which are separated from each other during said focusing.

Claim 4

A camera comprising: (a) photographing optical means capable of switchover between first and second focal lengths; (b) viewfinder optical means capable of effecting switch-over between first and second magnifications corresponding to said first and second focal lengths, respectively, of said photographing optical means, the viewfinder optical means including a finder optical path, a first movable optical system which is inserted in said finder optical path for making said first magnification and retracted from said finder optical path for making said second magnification, and a second movable optical system disposed near said first movable optical system; and (c) means for driving said photographing optical means and said first and second movable optical systems in synchronism with one another, said second movable optical system being displaced from the path of said first movable optical system during the movement of said first movable optical system; said driving means including means for rotating said second movable optical system around an axis substantially normal to said finder optical path, and means for moving said second movable optical system along said finder optical path.

Claim 5

A camera comprising: (a) photographing optical means capable of switchover between first and second focal lengths; (b) viewfinder optical means capable of effecting switch-over between first and second magnifications corresponding to said first and second focal lengths, respectively, of said photographing optical means, the viewfinder optical means including a finder optical path, a first movable optical system which is inserted in said finder optical path for making said first magnification and retracted from said finder optical path for making said second magnification, and a second movable optical system disposed near said first movable optical system; and (c) means for driving said photographing optical means and said first and second movable optical systems in synchronism with one another, said second movable optical system being displaced from the path of said first movable optical system during the movement of said first movable optical system; said driving means including means for rotating said second movable optical system around an axis substantially normal to said finder optical path, and means for moving said second movable optical system along said finder optical path.

Claim 6

A camera according to claim 3, wherein the last-mentioned means moves said second movable optical system along said finder optical path after rotation by said rotating means.

Claim 7

A camera according to claim 4, wherein said driving means includes first driving means which actuates said photographing optical means for the switch-over of the focal length, and second driving means which operates each of said first and second movable optical systems in synchronism with said first driving means.

Claim 8

A camera according to claim 3, wherein said driving means includes first driving means which actuates said photographing optical means for the switch-over of the focal length, and second driving means which operates each of said first and second movable optical systems in synchronism with said first driving means.

Claim 9

A camera comprising: (a) photographing optical means having an optical system capable of altering the focal length of said photographing optical means and effecting focusing toward an object; (b) viewfinder means having an optical system capable of altering magnifying power of said viewfinder means corresponding to the focal length of said photographing optical means; (c) an electric motor; (d) first transmission means adapted for the connection of said motor to said photographing optical means; (e) second transmission means adapted for the connection of said motor to said viewfinder means; and (f) control means including circuit means for actuating said motor, the control means causing said motor to simultaneously drive said first and second transmission means for altering the focal length of said photographing optical means and for altering the magnifying power of said viewfinder means and to drive said first transmission means for the focusing of said photographing optical means.

Claim 10

A camera comprising: (a) photographing optical means having an optical system capable of altering the focal length of said photographing optical means and effecting focusing toward an object; (b) viewfinder means having an optical system capable of altering magnifying power of said viewfinder means corresponding to the focal length of said photographing optical means; (c) an electric motor; (d) first transmission means adapted for the connection of said motor to said photographing optical means; (e) second transmission means adapted for the connection of said motor to said viewfinder means; and (f) control means including circuit means for actuating said motor, the control means causing said motor to simultaneously drive said first and second transmission means for altering the focal length of said photographing optical means and for altering the magnifying power of said viewfinder means and to drive said first transmission means for the focusing of said photographing optical means.

Claim 11

A camera according to claim 7, wherein said photographing optical means has first and second focal lengths and is driven between said first and second focal lengths, and said viewfinder means has first and second magnifying powers corresponding to the first and second focal lengths, respectively, of said photographing optical means and is driven between said first and second magnifying powers.