Lens barrel
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Oct 3, 2017
Issued Date -
N/A
app pub date -
Jan 14, 2015
filing date -
Jan 22, 2014
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A lens barrel includes a first drive mechanism which rotates a cam ring to move a cam-driven lens frame, holding a lens group, in accordance with a cam groove; a second drive mechanism which screw-engages a nut with a feed screw, biases a nut-driven lens frame to abut the nut, and moves the nut-driven lens frame. The cam-driven lens frame is positioned adjacent to the nut-driven lens frame on a reverse side to the biasing direction, and driving ranges of these lens frames partially overlap each other. The first drive mechanism includes a cam-driven member, separate from the cam-driven lens frame, which is linearly guided and provided with a cam follower which engages with the cam groove of the cam ring; and a biasing member which biases the cam-driven lens frame to abut against the cam-drive member, so that the cam-driven lens frame moves with the cam-driven member.
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