Zoom lens camera incorporating flexible printed circuit board

G - Physics – 02 – B

Patent

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88/100, 356/4

G02B 7/10 (2006.01) G02B 7/04 (2006.01) G03B 3/00 (2006.01)

Patent

CA 1337464

A zoom lens barrel is disclosed with includes a stationary barrel. A rotatable cam ring is supported by the stationary barrel and is adapted to move along an optical axis direction in association with rotation of the rotatable cam ring. A lens guide ring is adapted to move together with the cam ring along the optical axis direction, and the cam ring is adapted to rotate relative to the lens guide ring, in association with axial movement of the cam ring. Cam grooves are provided for guiding the movement of at least two movable front and rear lens groups, with at least one groove being formed on the cam ring. Lens guide grooves are formed on the lens guide ring and are adapted to correspond to the cam grooves of the cam ring. At least one guide pin is provided which is adapted to extend through an associated cam groove and an associated lens guide groove. The cam grooves and lens guide grooves are shaped such that the movable lens groups can be moved along a predetermined track by the movement which results from axial movement and relative rotation of the cam ring and the lens guide ring.

616808

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