Patent Number: 6,253,030

Title: Camera shutter

Abstract: A shutter for a camera has a film advance mechanism for advancing film past a shutter opening and a stroboscope for emitting light. The shutter has a base plate having the shutter opening, opening sectors for undergoing opening movement in an operational state to open the shutter opening during a shutter release operation, and closing sectors for undergoing closing movement in an operational state to close the shutter opening during the shutter release operation. A first detecting device detects the operational state of the opening sectors and outputs a signal to the stroboscope to emit light. A second detecting device detects the operational state of the closing sectors and outputs a signal for winding up the film. A non-opened state of the shutter opening is detected after the shutter release operation when the second detecting device detects the operational state of the closing sectors before the first detecting device detects the operational state of the opening sectors.

Inventors: Miyauchi; Osamu (Narashino, JP), Takahashi; Kunioki (Narashino, JP)

Assignee: Seiko Precision Inc.

International Classification: G03B 9/22 (20060101); G03B 9/70 (20060101); G03B 9/00 (20060101); G03B 9/10 (20060101); G03B 17/42 (20060101); G03B 009/70 (); G03B 001/00 ()

Expiration Date: 06/26/2018