Dynamic camera focusing
AssigneeRey. Focusing Systems Ltd.
InventorIsaac Canetti
Life of this patent
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Abstract
Apparatus for focusing a camera having an optic axis, an optic center and a field of view, to image a scene, the apparatus comprising: an illumination system controllable to illuminate substantially any region of interest (ROI) of the scene in the field of view of the camera with a relatively small fiducial spot of light; a ranging system configured to determine a range for the fiducial spot relative to the camera; and a controller that focuses the camera to a distance responsive to the determined range.
Claims15
Apparatus for focusing a camera having an optic axis, an optic center and a field of view, to image a scene, the apparatus comprising:
- an illumination system controllable to illuminate substantially any region of interest (ROI) of the scene in the field of view of the camera with a fiducial spot of light;
- a position sensing device that determines a direction relative to the camera optic axis along which the illumination system illuminates the ROI with the fiducial spot of light;
- a ranging system configured to determine a range for the fiducial spot relative to the camera;
- and
- a controller that focuses the camera to a distance responsive to the determined range.
A method of focusing a camera having an optic axis and optic center to image a scene, the method comprising:
- illuminating an off axis region of interest in the scene with a relatively small fiducial spot of light;
- determining a range for the fiducial spot relative to the camera;
- and
- focusing the camera responsive to a scalar product of a vector from the camera optic center to the fiducial spot with a unit vector coincident with the camera optic axis.
Dependencies are inferred from the claim text.