| 主权项 |
1. A zoom lens device comprising:
a base barrel surrounding an axis; a first transmitting assembly including
a first guide barrel that is connected to an inner surrounding surface of said base barrel and that is movable relative to said base barrel along the axis,a first cam barrel that is connected co-movably to and rotatable about the axis relative to said first guide barrel, and that is formed with a plurality of angularly spaced-apart first lens grooves, anda first lens barrel that is connected to said first guide barrel, that is movable relative to said first guide barrel along the axis, and that has a plurality of angularly spaced-apart first guide pins engaging slidably and respectively said first lens grooves; a second transmitting assembly including
a second guide barrel that is connected to said inner surrounding surface of said base barrel and that is movable relative to said base barrel along the axis,a second cam barrel that is connected co-movably to and rotatable about the axis relative to said second guide barrel, that is connected co-rotatably to and movable along the axis relative to said first cam barrel, and that is formed with a plurality of angularly spaced-apart second lens grooves, anda second lens barrel that is connected to said second guide barrel, that is movable relative to said second guide barrel along the axis, and that has a plurality of angularly spaced-apart second guide pins engaging slidably and respectively said second lens grooves; a driving barrel surrounding said base barrel and rotatable about the axis; a driving mechanism including
a plurality of angularly spaced-apart driving grooves that are formed in said driving barrel and that extend in a direction of the axis,a plurality of angularly spaced-apart first cam grooves that are formed in said base barrel, anda plurality of angularly spaced-apart driving pins that are disposed on said first cam barrel, each of said driving pins extending through and being slidable along a respective one of said first cam grooves, and engaging slidably a respective one of said driving grooves; and a driven mechanism including
a plurality of angularly spaced-apart second cam grooves that are formed in one of said base barrel and said driving barrel, anda plurality of angularly spaced-apart driven pins that are disposed on one of said second cam barrel and said second guide barrel that is angularly displaceable relative to said one of said base barrel and said driving barrel, each of said driven pins engaging slidably a respective one of said second cam grooves; wherein, rotation of said driving barrel drives said first and second cam barrels to rotate synchronously and move individually along the axis via said driving and driven mechanisms, and therefore causes individual axial movements of said first and second lens barrels via said driving and driven mechanisms and via the engagement between said first guide pins and said first lens grooves and the engagement between said second guide pins and said second lens grooves, thereby resulting in zoom adjustment of said zoom lens device.
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