Wide angle fisheye security camera having offset lens and image sensor

摘要

A wide angle, e.g., fisheye, surveillance, e.g., security, camera comprises an offsetting mechanism for offsetting a center of the image sensor relative to an optical axis of the fisheye lens system. Often when fisheye cameras are wall mounted a substantial area of the image may be dedicated to looking at sky or ceiling. A similar situation can arise when a fisheye camera is ceiling mounted next to a wall or other structure. Portions of the image will be unchanging and of little value for surveillance. The camera provides the capability to offset the lens system relative to the image sensor. In examples, this offset is performed as a factory manufacture or calibration step. In other examples, the offset is performed as an adjustment in the field at the time of installation or thereafter.

主权项

1. A wide angle surveillance camera, comprising:
an image sensor for detecting images; a wide angle lens system for forming images on the image sensor; and an offsetting mechanism for offsetting a center of the image sensor relative to an optical axis of the wide angle lens system.