Lens barrell

Details Lens barrell Lens barrell

1999-02-02

2000-05-30

Sugarman, Scott J.

Optical: systems and elements

Lens

With variable magnification

359704, G02B 702

Patent

active

060697458

ABSTRACT:
A lens barrel has a plurality of moving frames that move along the optical axis of lenses. The lens barrel comprises a first moving frame, a second moving frame, and an interlocking unit. The first moving frame moves along the optical axis. The second moving frame moves along the optical axis within a range smaller than the movable range of the first moving frame. The interlocking unit formed on the first moving frame interlocks the second moving frame with the first moving frame and moves the second moving frame responsively to the movement along the optical axis made by the first moving frame. The movable range of the first moving frame falls into a range of interlocking within which the second moving frame is moved interlocked with the first moving frame, and a range of non-interlocking within which the second moving frame is not interlocked with the first moving frame. Consequently, a moving mechanism for moving the plurality of lens frames can be simplified. Eventually, the lens barrel can be designed compactly.

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