| 摘要 |
PURPOSE:To simplify the assembly, by dividing an interchangeable lens of an auto-focusing single-lens reflex camera, into 3 units. CONSTITUTION:An image of an object to be photographed, which has passed through lenses 1-8 is made incident to a photodetector, an when its output signal is received, an operating circuit controls a motor 10 in accordance with an incident picture, and the focus is adjusted by moving movable lenses 4, 5 and 6. The camera body and the interchangeable lens are electrically connected by a contact 105 provided on a bayonet 26. The interchangeable lens A consists of 3 units such as a front body 11 which has stored a motor 10, gears 15, 18 and movable lenses 4, 5 and 6, a rear body 12 having an aperture 23 and an aperture ring 24, and a lens outside circumferential ring 13 having a range graduation read window 32. |
