Device for moving lens and diaphragm by motor

Abstract

Abstract PURPOSE:To control movement of both of a lens and a diaphragm with a simple motor by moving a lens barrel to a desired position through a diaphragm setting member by the driving force due to rotation in a prescribed direction of the motor and controlling the diaphragm to a desired position through the lens barrel by the rotating force in the opposite direction of the motor. CONSTITUTION:When the driving force of a motor 7 is supplied to a rotating member 1, a lens barrel 4 and a diaphragm mechanism 9 are rotated in the same direction of an arrow A as the rotating member 1. When this operation is viewed with a diaphragm control member 10 as the center, this member 10 is moved to reach a left end part 12a of a moving groove 12, which prescribes its moving range, by this operation. When the motor 7 is reversed, the driving force is transmitted to the rotating member 1 through a gear row 8 and is simultaneously transmitted to the lens barrel 4 and the diaphragm mechanism 9 through the first and second screw parts 3 and 6. Thus, the motor 7 is rotated forward and reverse to move a lens 5 and aperture blades 9a to desired positions.

Inventors

• 👤 Tsunemi Yoshino
• 👤 恒美 吉野
• 👤 Katsuji Ishikawa
• 👤 勝司 石川
• 👤 Hiroshi Iwata
• 👤 比呂志 岩田

Bibliographic Details