ASSEMBLY OF A LENS FRAME WITH A VARIABLE FOCUS DISTANCE AND AN IMAGE CAPTURE DEVICE WITH THIS ASSEMBLY Russian patent published in 2017 - IPC G03B3/02 

FIELD: physics.

SUBSTANCE: proposed assembly contains a first zoom ring supporting the first group of lenses; first guide ring, inside which is located a first zoom ring, connected by a cam to the first zoom ring for linearly moving the first group of lenses along the optical axis; second zoom ring supporting the second lens group, connected by a cam to the first guide ring for linear movement along the optical axis; second guide ring connected by a cam to the first guide ring and configured to linearly move along the optical axis to rotate the first guide ring; second cylinder configured to linearly move along the optical axis together with a second zoom ring with simultaneous rotation; and an outer cylinder containing a third group of lenses and connected by a cam to a second cylinder to drive the second cylinder into rotation. The assembly is also included in the corresponding image capture device.

EFFECT: improving the accuracy of lens assembly.

15 cl, 12 dwg