G02B 15/16 with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group (G02B15/22 takes precedence)
Introduced: September 1968
Title
Titles differ between systems:
IPC: with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
CPC: with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group (G02B15/22 takes precedence)
Full Title
Full titles differ between systems:
Optical objectives with means for varying the magnification > by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective > with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
Optical objectives with means for varying the magnification (anamorphotic objectives G02B13/08) > by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective > with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group (G02B15/22 takes precedence)
IPC and CPC are identically structured here. All 3 subcodes exist in both systems.
1 shared codes have differing titles between IPC and CPC.
IPC defines codes here since 1985.
Child Classifications
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- G02B 15/163 having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group (G02B15/177 takes precedence) since 1985 IPC+CPC Available in IPC and CPC
- G02B 15/177 having a negative front lens or group of lenses since 1985 IPC+CPC Available in IPC and CPC
- G02B 15/20 having an additional movable lens or lens group for varying the objective focal length since 1985 IPC+CPC Available in IPC and CPC