Optical scanning device

摘要

A device for scanning a body orifice or surface including a light source and a wide angle lens. The light from the light source is projected in a pattern distal or adjacent to the wide angle lens. Preferably, the pattern is within a focal surface of the wide angle lens. The pattern intersects a surface of the body orifice, such as an ear canal, and defines a partial lateral portion of the pattern extending along the surface. A processor is configured to receive an image of the lateral portion from the wide angle lens and determine a position of the lateral portion in a coordinate system using a known focal surface of the wide angle lens. Multiple lateral portions are reconstructed by the processor to build a three-dimensional shape. This three-dimensional shape may be used for purposes such as diagnostic, navigation, or custom-fitting of medical devices, such as hearing aids.

主权项

1. Apparatus for scanning a three dimensional (‘3D’) object, the apparatus comprising:
a otoscanner body having mounted upon it a scanning probe, the scanning probe comprising a laser light source, a laser optical element, a source of non-laser video illumination, a wide-angle lens optically coupled to an image sensor, and an image sensor mounted within the otoscanner body and coupled for data communications to a data processor; a plurality of tracking illumination sensors, the tracking illumination sensors sensing reflections of tracking illumination emitted from a tracking illumination emitter and reflected from tracking fiducials installed at positions that are fixed relative to the scanned object, the tracking illumination sensors also sensing reflections of tracking illumination emitted from the tracking illumination emitter and reflected from tracking targets installed at fixed positions on the otoscanner body; and the data processor configured so that it functions by constructing, in dependence upon a sequence of images captured when a scanned object is illuminated by laser light and tracked positions of the scanning probe inferred from reflections of tracking illumination sensed by the tracking illumination sensors, a 3D image of the scanned object.