| 摘要 |
PURPOSE:To prevent out of focus even in the case of performing zooming over other focal distance within a zoom range just by performing focusing once when an optical focal distance is selected in spite of a simple mechanism. CONSTITUTION:A basic motion member 15 rotates by receiving the rotational force of a pulse motor for variable power through a driving gear 10 so as to move a zooming lens in an optical axis direction through a variable power engaging pin 1a engaged with a zoom cam groove 19. A focusing member 20 is pivotally attached on the member 15 through a moving shaft 17. In the case of distance infinity , the member 20 is relulated by a regulating pin 18 and integrally rotated to move a focusing engaging pin 2a engaged with a focusing cam surface 21, whereby a focusing lens is moved in the optical axis direction. In the case the subject distance is shorter than infinity, a focusing curve selection means 14 rotates an AF pin holding lever 23 by an amount in accordance with the distance so as to incline the focusing cam surface 21. |
