Eric M. Andreassen,David M. Fallat,Ervin Goldfain,John R. Strom,John T. Delaney,Howard Haines,Corinn C. Fahrenkrug,Cynthia A. Kuiper
申请号：
US16904676
公开号：
US20200315442A1
申请日:
2020.06.18
申请国别(地区):
US
年份:
2020
代理人:
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.
