Optical: systems and elements – Lens – With support
Patent
1991-01-18
1993-03-02
Gonzalez, Frank
Optical: systems and elements
Lens
With support
359695, 359700, 359701, 359823, G02B 702
Patent
active
051914824
ABSTRACT:
A lens driving apparatus for moving a plurality of lens groups, in an optical axis direction, to change the spatial distance therebetween, including a supporting cylinder which is secured to an immovable portion of a lens barrel, a cam ring which is rotatably fitted on the supporting cylinder, at least two inner lens moving frames which are provided in the supporting cylinder so as to move in the optical axis direction, guide grooves which are formed on the supporting cylinder to guide the lens moving frames in the optical axis direction, cam grooves which are formed on the cam ring to move the lens moving frames along therewith, and cam followers which are secured to the inner lens moving frames and which extend through the corresponding guide grooves to be fitted into the corresponding cam grooves.
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Asahi Kogaku Kogyo Kabushiki Kaisha
Gonzalez Frank
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