To provide a film unit with a lens in which a sector blade is surely actuated by providing a shutter driving member and the sector blade having a part to be driven with a dimensional difference in a direction opposite to film in the optical axis direction of a photographing lens with respect to the light shielding part of an exposure aperture.
By depressing a shutter button, a driving lever 41 is unlocked and actuated by a spring 42. The sector blade 45 is actuated to open the exposure aperture part for an incident light beam on the film, so that exposure is performed for a specified time. Thereafter, the blade 45 is restored by a spring 46, and the aperture part 326 is closed. By operating a winding knob, the lever 41 of the shutter driving member is moved backward. At such a time, it slides along a long groove 453 provided on the blade 45 in a state where the exposure aperture part for the incident light beam on the film is still closed by the blade 45. Since a distance between a shaft 203 and the part to be driven 452 is made long with respect to the specified actuation angle of the lever 41, the blade 45 is stably actuated.
TAKABA TETSUSHI
YAMAZAKI MASARU
