Lens assembly with a linear guide system

摘要

A lens assembly for a camera including a first lens mounted to a base portion, and a second lens mounted to a lens frame, where the first lens and the second lens are positioned co-axially along a central axis. The lens assembly includes a linear guide system for maintaining alignment of the first and second lenses. An embodiment of the linear guide system includes a first elongated element elongated along a longitudinal axis extending therethrough, parallel to and offset from the central axis. The elongated element may support and guide the lens frame for linear movement along a linear path parallel to the central axis. Some embodiments of the lens assembly include a second elongated element or rotation restriction element.

主权项

1. A lens assembly for a camera, the lens assembly comprising:
a base portion configured to secure the lens assembly to the camera; a first lens mounted to the base portion; a lens frame; a second lens mounted to the lens frame, the first lens and the second lens positioned co-axially along a central axis extending through both the first lens and the second lens; and a linear guide system for the first and second lens comprising:
a first elongated element and a second elongated element, each of the first elongated element and the second elongated element being elongated along a longitudinal axis extending therethrough and being parallel to and offset from the central axis,the lens frame supported by the first elongated element and the second elongated element, the first and second elongated elements supporting and guiding the lens frame for linear movement along a linear path parallel to the central axis, the linear movement along the linear path changing the distance between the first lens and the second lens to adjust the focus position of the lens assembly,wherein support of the lens frame by the first and second elongated elements is provided by a fixed connection between the lens frame and one of the first and second elongated elements.