Joseph H Kerr

US Patent:

46698361, Jun 2, 1987

Filed:

Sep 28, 1984

Appl. No.:

6/655605

Inventors:

John R. Richardson - Huntsville AL
Joseph H. Kerr - Wedowee AL

Assignee:

The United States of America as represented by the Administrator of the
National Aeronautics and Space Administration - Washington DC

International Classification:

A61B 314
G03B 2900

US Classification:

351206

Abstract:

The invention relates to a method and apparatus for detecting human eye defects, particularly detection of refractive error. The invention operates by recording on color film the eye reflex which occurs when eyes are exposed to a flash of light. The photographs are compared with predetermined standards, to detect eye defects. As shown in FIGS. 1 and 2, the base structure of the ocular screening system (10) is folding interconnect structure (12), comprising hinged sections (14), (16), and (18). Attached to one end of structure (12) is head positioning station (24) which comprises vertical support (26), a head positioning bracket (28) having one end attached to the top of support (26), and two head positioning lamps (33) to verify precise head positioning. At the opposite end of interconnect structure (12) is a camera station (34) with camera (38), electronic flash unit (44), and blinking fixation lamp (46), for photographing the eyes of persons being evaluated.

US Patent:

39307352, Jan 6, 1976

Filed:

Dec 11, 1974

Appl. No.:

5/531572

Inventors:

Joseph H. Kerr - Huntsville AL

Assignee:

The United States of America as represented by the United States
National Aeronautics and Space Administration - Washington DC

International Classification:

G08G 100

US Classification:

356167

Abstract:

This invention is of a traffic survey system in which an aerial photo survey transparency is first made of a significant survey area, for example, two kilometers square. The transparency is then optically scanned to check the position and size of vehicles on roadways in the area. By computer control comparison with a reference transparency wherein areas other than roadways are made opaque and roadways are made clear, scanning may be directed solely to roadway regions. Vehicle size analysis is accomplished by means of discrete holographic filters corresponding to selected size vehicles.