Drive device, lens barrel and camera

Abstract

In a drive device having a drive unit which is mounted on a body of the drive device, a rotary scale such as a pulse disc which is disposed at the drive unit and a light-emitting element and a light-receiving element which are arranged on a circuit board of the body in a state of confronting each other through the pulse disc, the drive unit includes a first transmission member which has a rotation shaft arranged to be substantially orthogonal relative to the circuit board and a second transmission member which is connected to the first transmission member and is arranged to rotate in synchronism with the rotation of the first transmission member, the second transmission member having a rotation shaft arranged to be substantially orthogonal relative to the rotation shaft of the first transmission member, and the pulse disc is connected to the second transmission member.

Dependencies are inferred from the claim text.