Patent ID: 11960194
Assignee: NIDEC COPAL CORPORATION
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A camera, comprising:
a housing having a front surface with a viewfinder;
a frame accommodated in the housing;
a lens barrel accommodating at least one lens, the lens barrel including
a stationary cylinder including a base fastened to the frame and a cylindrical wall extending in an axial direction from the base,
an extendable unit located radially inward from the cylindrical wall of the stationary cylinder, the extendable unit being extendable in the axial direction, and
an operation cylinder rotatable relative to the stationary cylinder without moving in the axial direction to extend and contract the extendable unit, the operation cylinder including a guide surface extending in a circumferential direction and a lever drive adjacent to the guide surface in the circumferential direction, the lever drive having an outer diameter different from an outer diameter of the guide surface;

a viewfinder portion causing a frontward field of view to be visible through the viewfinder in the housing;
a drive lever rotatable about a first shaft, the drive lever including
an actuation portion configured to come in contact with the guide surface of the operation cylinder, and
a drive gear including a plurality of teeth;

an urging member urging the actuation portion in the drive lever toward the guide surface of the operation cylinder;
a prism configured to change a direction of a field of view visible through the viewfinder portion; and
a prism guide lever rotatable about a second shaft, the prism guide lever including
a prism holder holding the prism, the prism holder being placeable into the viewfinder portion, and
a follower gear including a plurality of teeth meshing with the plurality of teeth in the drive gear in the drive lever.