Patent ID: 6236812
Filing Date: 2001-05-22
Classification: G03B

Abstract:
A lens-fitted photo film unit pre-loaded with photo film, including a shutter mechanism for taking an exposure on said photo film, a flash-emission main capacitor for storing charge by a charging operation, a flash discharge tube for emitting flash light by discharging said main capacitor, and a flash circuit for controlling said charging operation and discharging operation of said main capacitor, said lens-fitted photo film unit comprising:a trigger switch, disposed in said flash circuit, turned on by said shutter mechanism upon operation of said shutter mechanism, for discharging said main capacitor; anda signal generator, having a semiconductor switching element, for generating an exposure detection signal in response to turning on of said trigger switch, to represent actuation of said shutter mechanism, wherein the signal generator has only one output, said output being connected to a write control IC.