Lens barrel with lock mechanism
First Claim
1. A lens barrel with a lock mechanism, comprisinga fixed cylinder,an adjustment ring slidably attached to the fixed cylinder for rectifying locations of optical components in directions along the optical axis,a plurality of lock screws fitted in a plurality of screw holes extending at one end of the fixed cylinder in parallel with the optical axis, the lock screws each having its part serving as a turning force transmitting segment and moving in directions along the optical axis at the end of the fixed cylinder, anda lock operating ring slidably attached to the end of the fixed cylinder and having an inner engagement surface, the inner engagement surface being operatively mated with the turning force transmitting segment of the lock screw to let the lock screw rotate,the lock operating ring being pivoted to turn the lock screw, and the lock screw securing the adjustment ring to the fixed barrel to lock it up.
1 Assignment
0 Petitions
Accused Products
Abstract
A lens barrel with a lock arranged to avoid loosening the lock and defocusing the lens barrel when vibrated during focusing and zooming. The lens barrel includes a fixed cylinder, an adjustment ring, lock screws and a lock ring, lock screws and a lock ring. The adjustment ring is slidably attached to the fixed cylinder so as to rectify locations of optical components along the optical axis. The lock screws in screw holes extend at one end of the fixed cylinder in parallel with the optical axis, and each lock screw has a part that serves as a turning force transmitting segment and moves along the optical axis at the end of the fixed cylinder. The lock ring is slidably attached to the end of the fixed cylinder and has an inner surface that is mated with the force transmitting segment to let the lock screws rotate to secure the adjustment ring to the fixed barrel.
11 Citations
5 Claims
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1. A lens barrel with a lock mechanism, comprising
a fixed cylinder, an adjustment ring slidably attached to the fixed cylinder for rectifying locations of optical components in directions along the optical axis, a plurality of lock screws fitted in a plurality of screw holes extending at one end of the fixed cylinder in parallel with the optical axis, the lock screws each having its part serving as a turning force transmitting segment and moving in directions along the optical axis at the end of the fixed cylinder, and a lock operating ring slidably attached to the end of the fixed cylinder and having an inner engagement surface, the inner engagement surface being operatively mated with the turning force transmitting segment of the lock screw to let the lock screw rotate, the lock operating ring being pivoted to turn the lock screw, and the lock screw securing the adjustment ring to the fixed barrel to lock it up.
Specification