Ronald W Priest

US Patent:

56582358, Aug 19, 1997

Filed:

Mar 31, 1995

Appl. No.:

8/414351

Inventors:

Ronald A. Priest - Seminole FL
Donald A. Carignan - Westfield MA

Assignee:

MedRx, Inc. - Seminole FL

International Classification:

A61B 1227

US Classification:

600112

Abstract:

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 at a front end thereof, an optical lens system, and a coupling mechanism connecting the video camera to a rear end of the image forming assembly. The optical lens system is disposed along a longitudinal axis extending from a front distal end of the speculum portion to the video camera. The optical lens system includes an objective lens means disposed adjacent the front distal end and expander lens means spaced rearwardly from the objective lens along the longitudinal axis. Conically shaped inner taper tube surface defines a trapezoidal chamber portion around an optical image path that extends in a direction parallel to the longitudinal axis of an inner optical passage. The trapezoidal chamber portion is located between the objective lens and the expander lens.

US Patent:

50461630, Sep 3, 1991

Filed:

Mar 16, 1990

Appl. No.:

7/494653

Inventors:

Ronald A. Priest - Seminole FL
Orion T. Ayer - St. Petersburg FL

International Classification:

H04N 700

US Classification:

358 94

Abstract:

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 communication with the pin hole lens to admit light into the lens. A low intensity light source is positioned immediately adjacent that opening. Roller members are transversely mounted on the leading end of the housing to facilitate displacement of the housing in lateral directions of the type needed to read printed matter. The output of the camera is conductively coupled to a remote monitor and the alphanumeric characters transmitted to the monitor are up to sixty times larger than the original characters. The housing may be adjustably mounted to a support plate so that the user may select the size of the field of view desired, and a rotatably mounted wheel enables adjustment of the focus of the pin hole lens.