1
Ronald A Priest, Donald A Carignan: Video otoscope and optical lens system therefor. MedRx, Neil F Markva, August 19, 1997: US05658235 (52 worldwide citation)

A video otoscope comprises an image forming assembly for producing an optical image of selected portions of an ear canal and a video camera for converting the optical image into a video image and transmitting the video image to a display system. The image forming assembly includes a speculum portion ...


2
Ronald A Priest, Orion T Ayer Jr: Hand held internally illuminated video reading aid. Joseph C Mason Jr, Ronald E Smith, September 3, 1991: US05046163 (16 worldwide citation)

A light in weight, hand held device that enables people having low vision capabilities to read small alphanumeric characters. A pin hole lens camera having a long, narrow profile is housed in a housing of the same configuration. A small opening is formed in the leading end of the housing in open com ...