Optical instrument

Application Number: 00107524
Application Date: 2000.05.15
Publication Number: 1281994
Publication Date: 2001.01.31
Priority Information: 1999/5/13 JP 132409/99
International: G02B7/10;G03B13/32
Applicant(s) Name: Fuji Photo Film Co., Ltd.
Inventor(s) Name: Iwagasaki Hiroyuki;Takeshita Sachitaka
Patent Agency Code: 72002
Patent Agent: huang jianfeng
Abstract The present invention surely actualizes a zooming function and a focus adjusting function by a simple mechanism as to the optical equipment equipped with a zoom lens. A zoom lens barrel has a zoom-up guide path J&rarr B&rarr C&rarr D&rarr E for guiding a lens rear group for zooming-up operation, a zoom-down guide path G&rarr H&rarr I&rarr J for guiding the lens rear group for zooming-down operation, and focus adjustment guide paths B-J, C-I, D-H, and E-G which guide the lens rear group for focus adjustment in a state of extension to one of zooming means and connect the zoom-up guide path and zoom-down guide path and are formed corresponding to the zooming means respectively.