1
Donald A Clarke, Rodger L Reynolds, Timothy R Pryor: Panel surface flaw inspection. Diffracto, Larson and Taylor, December 16, 1986: US04629319 (121 worldwide citation)

This invention relates to electro-optical sensing of form type and other defects on surfaces such as sheet metal or plastic panels. Method and apparatus are disclosed for detection and quantification of defects such as dents, creases, low spots, flat spots, etc. which are a result of the manufacturi ...


2
Donald A Clarke, Rodger L Reynolds, Timothy R Pryor: Panel surface flaw inspection. Diffracto, Larson and Taylor, April 24, 1990: US04920385 (69 worldwide citation)

This invention relates to electro-optical sensing of form type and other defects on surfaces such as sheet metal or plastic panels. Method and apparatus are disclosed for detection and quantification of defects such as dents, creases, low spots, flat spots, etc. which are a result of the manufacturi ...


3
Nicholas Liptay Wagner, Roland Renaud, Timothy R Pryor, Donald A Clarke: Surface reflectivity detector with oil mist reflectivity enhancement. Diffracto, Larson and Taylor, August 11, 1987: US04686374 (52 worldwide citation)

A method an apparatus are provided for inspecting the surface of objects such as panels for automobile vehicles wherein the surface of the object is sprayed with an oil mist or the like to increase the reflectivity thereof. The surface is then illuminated with light so that the light image reflected ...


4
Nicholas Liptay Wagner, Roland Renaud, Timothy R Pryor, Donald A Clarke: New photodetector array based optical measurement systems. Diffracto, Larson and Taylor, July 19, 1983: US04394683 (37 worldwide citation)

A method and apparatus are provided for analyzing the light pattern produced on a photodetector array. The signal produced by the array is filtered with a low pass filter and the output of the filter is differentiated to obtain either the first or second derivative of the filtered signal for one or ...


5
Donald A Clarke, Rodger Reynolds, Timothy R Pryor: Diffractosight improvements. Diffracto, Larson and Taylor, September 5, 1989: US04863268 (34 worldwide citation)

Disclosed are improvements in the surface inspection method and apparatus invention of our copending application "Panel Surface Flaw Inspection", Ser. No. 579,971, U.S. Pat. No. 4,629,319, which has now come to be described as "DiffractoSight". Particularly disclosed are semi and full automatic tech ...


6
Timothy R Pryor, Omer L Hageniers, Walter J Pastorius, Nicholas Liptay Wagner, Donald A Clarke: Method and apparatus for determining physical characteristics of objects and object surfaces. Diffracto, Larson and Taylor, December 15, 1981: US04305661 (31 worldwide citation)

A method of determining physical characteristics of a surface. Light or other electromagnetic radiation is directed onto a first portion of a surface and the reflected radiation is received such as by a photodiode. The radiation is also directed onto at least two further portions of the surface and ...


7
Donald A Clarke, Rodger L Reynolds, Timothy R Pryor: Surface inspection using retro-reflective light field. Diffracto, Larson and Taylor, December 1, 1992: US05168322 (25 worldwide citation)

This invention relates to an electro-optical technique which senses form type and other defects on surfaces such as sheet metal or plastic panels. Method and apparatus are disclosed for allowing the inspection of the entire surface of interest from a single point of view while reducing the complexit ...


8
Timothy R Pryor, Omer L Hageniers, Walter J Pastorius, Nicholas Liptay Wagner, Donald A Clarke: Method and apparatus for determining physical characteristics of objects and object surfaces. Diffracto, Larson and Taylor, April 2, 1991: US05004339 (18 worldwide citation)

A method of determining physical characteristics of a surface. Light or other electromagnetic radiation is directed onto a first portion of a surface and the reflected radiation is received such as by a photodiode. The radiation is also directed onto at least two further portions of the surface and ...


9
Nicholas Liptay Wagner, Roland Renaud, Timothy R Pryor, Donald A Clarke: Photodetector array based optical measurement systems. Diffracto, Larson and Taylor, April 29, 1986: US04585947 (17 worldwide citation)

This invention relates to new and useful electro-optical methods and apparatus using photodetector arrays for measurement of parts and other objects in industrial environments. Several particularly useful optical embodiments are illustrated together with desirable electronic circuitry for improving ...


10
Timothy R Pryor, Omer L Hageniers, Walter J Pastorius, Nicholas Liptay Wagner, Donald A Clarke, Blaine Richards: Method and apparatus for determining physical characteristics of object outer surfaces. Diffracto, Larson Taylor and Hinds, April 27, 1982: US04326808 (16 worldwide citation)

A method and apparatus is disclosed for determining physical characteristics, such as defects, in the outer surface of an elongate object, wherein the object to be inspected passes through an aperture of a mirror surface which is a conical surface of revolution. Light directed onto the mirror surfac ...