Device for controllably moving an optical element

Details Device for controllably moving an optical element Device for controllably moving an optical element

G - Physics

02

B

G02B 7/00 (2006.01)

Patent

CA 2118166

A device for controllably is provided for moving an optical element such as an attenuator, into one of a plurality of positions. The device includes a rotatable, cylindrical member having a face cam that is an endless cammed surface for supporting and moving a cam follower. As the cammed surface is rotated, the cam follower resting upon it moves the optical element in a controlled manner. A gearing means in the form of a toothless planetary gear box is coupled to the cylindrical member and provides fine control over the range of movement of the device.

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