Digital otoscope

摘要

An otoscope includes an instrument head, a tip element and an optical system. The instrument head has a distal insertion portion for insertion into an ear of a human or veterinary subject. The distal insertion portion has a distal opening. The tip element is releasably attached to the distal insertion portion. The tip element has a distal opening. The optical system is contained within the instrument head. The optical system includes a plurality of optical components. The optical system further comprises a viewing component for viewing of an image of a target of interest aligned along an optical axis disposed within said distal opening. The optical system is configured to provide a field of having a diameter equaling at least 7 mm at a distance of at least 15 mm from a distal opening of said attached tip element. The optical system is further configured to simultaneously provide a distance range of optimal focus having a range of at least 8 mm. The distance range of optimal focus includes a location at a working distance equal to about 30 mm.

主权项

1. An otoscope comprising:
a digital image forming device; an instrument head having a distal insertion portion for insertion into an ear of a human or veterinary subject, said distal insertion portion having a distal opening; and an optical system contained within said instrument head, said optical system including a plurality of optical components; and wherein said optical system comprises a tip element mounted onto the distal insertion portion, and in which the mounted tip element penetrates at least 5 mm into a representative ear canal and provides an distance range of optimal focus having a length of at least 5 mm, wherein the optical system further comprises an objective lens disposed at the distal end of the distal insertion portion and a plurality of imaging lenses disposed along an imaging axis and aligned with the digital image forming device wherein the optical system forms a distal entrance pupil outside of the distal insertion portion but within the mounted tip element.