| 摘要 |
A riflescope includes an objective lens component slidably supported on a guide track oriented perpendicular to an optic axis of the objective lens component for lateral, non-pivoting movement of the objective lens component in or along a plane perpendicular to the optic axis. Movement of the objective lens component shifts an image of a target in the field of view relative to an aiming mark displayed in the riflescope. In a preferred embodiment, a transparent optical window is fixedly mounted forwardly of the objective lens element and sealed to the riflescope housing.
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