Interchangeable lens having between-the-lens-shutter

Abstract

Abstract PURPOSE: To restrain used blades to only one set, by providing the between-the- lens-shutter which controls the open degree of the shutter blade, which is used as the stop also, according to the object luminance. CONSTITUTION: In interchangeable lens 1, shutter blade 3 which is used as the stop also is arranged in photographic lens system 2. Shutter blade 3 is opened and closed by the driving device, and this interchangeable lens 1 is mounted on lens mount 7 of camera body 6 similarly to the conventional interchangeable lens by lens bayonet 5. Shutter blade 3 is so fixed pivotally to pivot 8 that it can be rotated clockwise, and the blade is provided with slot 9. Blade driving ring 10 is arranged under shutter blade 3, and driving pin 11 is provided on the upper face of this ring 10 and is fitted to slot 9, and ring 10 rotates shutter blade 3 clockwise with pivot 8 as the center by counterclockwise rotation. COPYRIGHT: (C)1981,JPO&Japio

Inventors

• 👤 Giichi Ando
• 👤 Shoji Anzai
• 👤 Junichi Yokosato

Bibliographic Details