Photographing lens drawing-back device

Abstract

Abstract PURPOSE:To make the whole body of a photographing device compact, by automatically drawing back its photographing lens which is drawn out long from the main body of the device by turning off a switch after taking a photograph. CONSTITUTION:When a main switch SM is turned off, a terminal OP14 is set to an 'L' level so as to stop a pressure rise and interruption INT2 due to the turning of a photographing preparatory switch S1 is inhibited. When a lens is mounted, the signal for stopping an AF motor M2 is outputted to a motor controlling circuit 11 and a microcomputer 1 permits timer interruption and interruption by encoder pulses after waiting the time necessary for stopping the motor M2. Then a feeding transistor Tr1 is turned on and the signal for rotating the motor M2 in the lens drawing-back direction is outputted. The motor M2 is driven and interruption is waited. Therefore, the lens is drawn back when the main switch SM is turned off and this camera can be carried in the most compact state.

Inventors

• 👤 Takahisa Shimada
• 👤 嶋田　高久
• 👤 Toshio Yamaki
• 👤 敏生 山木
• 👤 Kenji Tsuji
• 👤 賢司 辻
• 👤 Masaaki Nakai
• 👤 政昭 中井
• 👤 Akihiko Fujino
• 👤 明彦 藤野
• 👤 Hiroshi Otsuka
• 👤 博司 大塚

Bibliographic Details