Patent ID: 8469882
Filing Date: 2013-06-25
Classification: A61B

Abstract:
1. An otoscope comprising: 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; a tip element releasably attached to said distal insertion portion, said tip element having a distal opening; an optical system contained within said instrument head, said optical system including a plurality of optical components; wherein said 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; wherein said optical system is configured to provide a field of view having a diameter equaling to at least 7 mm at a distance of at least 15 mm from a distal opening of said attached tip element; and wherein said optical system is further configured to simultaneously provide a distance range of optimal focus having a range of at least 8 mm, said distance range of optimal focus including a location at a working distance equal to about 30 mm and wherein said optical system comprises an entrance pupil having a diameter that is less than 5 mm and that is located outside of the instrument head and within said attached tip element.