1
William H Havens, Charles M Hammond Jr, Robert J Hennick, Robert C Hinkley, Robert J Wood Sr, Tanya A Onori, Thomas W Karpen: Imaging and illumination optics assembly. Welch Allyn, Wall Marjama & Billinski, July 14, 1998: US05780834 (268 worldwide citation)


A low profile optical unit for use in a 2D bar code reader. A vertically disposed light redirecting panel having contoured reflective openings therein is mounted in the front of the unit and an LED behind the panel. Light emitting diodes for illuminating a target are mounted on the LED board behind ...


2
Thomas W Karpen, Dennis W McEnery, Robert C Gardiner, John A Pettinelli: Exposure control apparatus for use with optical readers. Welch Allyn, Wall Marjama Bilinski & Burr, November 3, 1998: US05831254 (218 worldwide citation)


An exposure control apparatus for use with optical readers, such as bar code readers, which utilize photosensitive image sensors. An illumination signal generating circuit generates an illumination signal having a magnitude that varies in accordance with the time averaged value of the illumination l ...


3
Jeffrey B Powers, William H Havens, Thomas W Karpen: Illumination apparatus for optical readers. Welch Allyn, Harris Beach & Wilcox, April 22, 1997: US05623137 (189 worldwide citation)


An apparatus for illuminating an indicia in a sensing region of an object plane. A housing has a median longitudinal vertical plane and a horizontal scanning plane. A reflector for reflecting light directed thereagainst toward the sensing region has a first approximately curvilinear profile in a pla ...


4
Thomas W Karpen, William H Havens, Dennis W McEnery, Brian L Jovanovski: Bar code reader for reading high to low contrast bar code symbols. Welch Allyn, Wall Marjama Bilinski & Burr, September 7, 1999: US05949054 (182 worldwide citation)


A bar code reader is provided which can read bar code symbols of varying contrast, from high to medium to low contrast. The bar code reader includes a digitizing circuit which digitizes an analog signal representing the reflectance function of a scanned bar code by comparing the analog signal to a t ...


5
Thomas W Karpen: Optical imaging assembly having improved image sensor orientation. Welch Allyn, Wall Marjama Bilinski & Burr, November 17, 1998: US05837985 (160 worldwide citation)


An imaging assembly having a 2D image sensor so oriented in relation to its supporting structure that, when a reader including the imaging assembly is held in its normal operating position during the reading of a 1D bar code symbol, the image of that 1D symbol is aligned with a diagonal of the image ...


6
Thomas W Karpen, Kenneth A Wright, Gerard F Beckhusen, Mark A McClaude, William H Lagerway, Jeffrey B Powers, Theresa M West: Illumination system for optical reader. Welch Allyn, Harris Beach & Wilcox, July 4, 1995: US05430285 (139 worldwide citation)


There is disclosed an apparatus for illuminating a sensing region having an object therein, comprising a reflector that is elongated in a first plane, the reflector having a width dimension that is less than a width dimension of a sensing region to be illuminated, and further having a first curved p ...


7
David L Weldum, Clark A Bendall, Michael C Lesmerises, Thomas W Karpen, Jon R Salvati: Method and system for storing calibration data within image files. GE Inspection Technologies, Marjama & Bilinski, August 28, 2007: US07262797 (67 worldwide citation)


A system and method for storing, within an image transfer medium, an image and image-specific data associated with the image includes obtaining the image-specific data from a probe such as a borescope or endoscope, obtaining the corresponding image, choosing a specific image transfer medium, writing ...


8
Clark A Bendall, Theodore A Chilek, Thomas W Karpen, Raymond A Lia, Jon R Salvati: Stereo-measurement borescope with 3-D viewing. Everest VIT, Wall Marjama & Bilinski, January 30, 2007: US07170677 (50 worldwide citation)


Two stereo images are created by splitting a single image into two images using a field of view dividing splitter. The two images can be displayed side by side so that they can be viewed directly using stereopticon technology, heads-up display, or other 3-D display technology, or they can be separat ...


9
James J Delmonico, Thomas W Karpen, Joseph V Lopez, Richard A Monroe, Joshua Lynn Scott: Battery and power management for industrial inspection handset. GE Inspection Technologies, Global Patent Operation, Mark A Conklin, March 8, 2011: US07902990 (37 worldwide citation)


An industrial inspection handset is disclosed, comprising a battery assembly for providing power to the handset, wherein the battery assembly comprises a connector for connecting a battery charger, a battery circuit for communicating with a processor in the handset, and a battery charge indicator on ...


10
William H Havens, Ynjiun P Wang, Vivian L Hunter, Allan I Krauter, Ervin Goldfain, Raymond A Lia, Richard W Newman, Thomas W Karpen, Bradford Morse, Dongmin Yang: Data reader apparatus having an adaptive lens. Additon Higgins Pendleton & Ashe P A, December 31, 2013: US08616454 (15 worldwide citation)


Systems and methods for making and using handheld data readers comprising one or more fluid lenses. One or more fluid lenses are provided to allow a handheld data reader to perform such operations as reading indicia, including such additional operations as zooming, reorienting a viewing direction, f ...



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