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Ervin Goldfain, William Legerway, Chris R Roberts: Eye viewing device for retinal viewing through undilated pupil. Welch Allyn, yu gang, December 26, 2001: CN99813584


The invention is a low cost, low input power eye viewing device well suited for viewing wide field retinal images through an undilated pupil. Included in the device are a converging light illumination system and an aperture stop. The converging light illumination system provides ease of entry of lig ...


42
Ervin Goldfain, Allan I Krauter, Chris R Roberts, Steven R Slawson, William H Lagerway: Eye viewing device comprising eyepiece and video capture optics. Wall Marjama & Bilinski, June 24, 2004: US20040119941-A1


The invention is an eye viewing device having a module holder formed at an observer end thereof. Replaceably received in the holder is a viewing module. The viewing module may comprise eyepiece optics, image signal generating elements, or combined eyepiece and image signal generating elements.


43
Ervin Goldfain, Steven R Slawson, Eric M Andreassen, Cynthia A Kuiper, Elizabeth P Staples, Raymond A Lia: Otoscope. Welch Allyn, Wall Marjama & Bilinski, February 3, 2005: US20050027169-A1


An otoscope permitting examination of a patient's ear is defined by an instrument head including a proximal end and a distal insertion portion that is insertable into the ear. The otoscope includes an imaging lens train disposed within the instrument head, wherein each of the imaging lens train, an ...


44
Corinn C Fahrenkrug, Chris R Roberts, Raymond A Lia, Ervin Goldfain, Jeffrey Perkins, Allan I Krauter, Andrew J Kugler: Apparatus and method for determining intraocular pressure and corneal thickness. Welch Allyn, Wall Marjama & Bilinski, February 10, 2005: US20050030473-A1


The invention includes methods and apparatus for measuring (Intraocular Pressure) IOP and (Corneal Thickness) CT for diagnosis and for monitoring a condition of health of an eye. The apparatus uses measurements selected from at least one of IOP and a CT, and a plurality of IOP measurements to deduce ...


45
Ervin Goldfain: Integral solid-state luminaire with dual light paths and coaxial optics. Welch Allyn, Hiscock & Barclay, May 3, 2007: US20070097703-A1


The invention includes a light and compact illuminator that can be powered from a portable and rechargeable battery. The illuminator includes two independent solid-state light sources and optics to converge the beams into a single high-intensity output beam. The components are enclosed in a lightwei ...


46
David J Tufenkjian, Ervin Goldfain, Richard A Tamburrino, Daniel C Briggs, Michael T McMahon: Hybrid surgical headlight system utilizing dual illumination paths and coaxial optics. Welch Allyn, Hiscock & Barclay, December 21, 2006: US20060285316-A1


The invention includes a luminaire especially for medical use. The luminaire provides the user with a solid state integral light source that illuminates the subject while allowing the user to move around untethered. The luminaire further allows the user to connect a remote, high-intensity light sour ...


47
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. Wall Marjama & Bilinski, March 22, 2007: US20070063048-A1


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 ...


48
Ervin Goldfain, Chris R Roberts, Allan I Krauter, Steven R Slawson, William H Lagerway: Eye viewing device comprising eyepiece and video capture optics. Welch Allyn, George S Blasiak, Wall Marjama & Bilinski, July 25, 2002: US20020097379-A1


The invention is an eye viewing device having a module holder formed at an observer end thereof. Replaceably received in the holder is a viewing module. The viewing module may comprise eyepiece optics, image signal generating elements, or combined eyepiece and image signal generating elements.


49
Ervin Goldfain, William Lagerway, Chris R Roberts, Steven R Slawson, Allan I Krauter: Eye viewing device for large field viewing. Welch Allyn, George S Blasiak, Wall Marjama & Bilinski, July 11, 2002: US20020089644-A1


The invention is a low cost, low input power eye viewing device well suited for viewing wide field retinal images through an undilated pupil. Included in the device are a converging light illumination system and an aperture stop. The converging light illumination system provides ease of entry of lig ...


50
Ervin Goldfain, William Lagerway, Chris R Roberts, Steven R Slawson, Allan I Krauter: Eye viewing device for large field viewing. Welch Allyn, Gary Ritts, Po Box 7651, May 29, 2003: US20030098952-A1


The invention is a low cost, low input power eye viewing device well suited for viewing wide field retinal images through an undilated pupil. Included in the device are a converging light illumination system and an aperture stop. The converging light illumination system provides ease of entry of lig ...



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