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Ervin Goldfain, William Lagerway, Chris R Roberts, Steven R Slawson, Allan I Krauter: Eye viewing device for large field viewing. Welch Allyn, Wall Marjama & Bilinski, September 6, 2005: US06939006 (5 worldwide citation)


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 ...


12
Steven R Slawson, Chris R Roberts, Allan I Krauter, Ervin Goldfain: Eye viewing device comprising eye cup. Welch Allyn, Wall Marjama & Bilinski, December 14, 2004: US06830347 (5 worldwide citation)


The invention is a hand-held eye viewing device adapted to be readily positioned in an operative radial displacement, angular orientation and axial standoff position relative to an eye. The eye viewing device includes an eye cup extending from a patient end of the device having a patient end adapted ...


13
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, March 4, 2003: US06527390 (5 worldwide citation)


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 ...


14
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, Marjama & Bilinski, December 25, 2007: US07311401 (4 worldwide citation)


There is described in one embodiment an eye viewing device for viewing a structure of an eye such as a retina. The eye viewing device can include an image sensor. In one embodiment an eye viewing device can be adapted to facilitate both visual viewing of an eye structure and electronic image capture ...


15
Richard A Tamburrino, Roger W Leseberg, Michael T McMahon, Ervin Goldfain: Vented iris control for luminaire. Welch Allyn, Hiscock & Barclay, November 17, 2009: US07618159 (4 worldwide citation)


Disclosed in this specification is a luminaire with a vented iris controller disposed on the external surface of the housing of the luminaire. The controller is for dilating and constricting the iris, thus controlling the size of the illuminated spot, wherein the iris controller is comprised of a ho ...


16
James Strong, Richard A Tamburrino, John M Ryan, Roger W Leseberg, Ervin Goldfain, David M Babson, David Stephens, Angelo Martellaro: Wearable headlight devices and related methods. Integra Lifesciences Corporation, Jenkins Wilson Taylor & Hunt P A, December 2, 2014: US08899774 (3 worldwide citation)


Wearable headlight devices and related methods are provided and can include a luminaire that can include a housing having a luminaire vent therein for receiving cooling air and a light source contained within the housing. An air moving device can be located outside of the luminaire for facilitating ...


17
Ervin Goldfain, Raymond A Lia: Method and apparatus for analyzing subsurfaces of a target material. Welch Allyn, Guntin & Gust, Ed Guntin, September 24, 2013: US08543192 (3 worldwide citation)


A system that incorporates teachings of the present disclosure may include, for example, a method for aligning first and second light signals on an optical path directed to a target, where the first light signal provides a visualization of the target, and a portion of the second light signal reflect ...


18
William E Cleveland, Ervin Goldfain: Compact telescoping retinoscope. Welch Allyn, Harris Beach & Wilcox, October 17, 1995: US05459535 (3 worldwide citation)


The present invention is directed to a compact retinoscope which telescopes to a closed position in order to allow the instrument to be stored in a pocket or pocket carrying case. As the instrument body or head is pushed downward to its closed position, a main internal sleeve travels upwards (relati ...


19
Ervin Goldfain, Allan I Krauter, Chris R Roberts, Steven R Slawson, William H Lagerway: Eye viewing device comprising video capture optics. Welch Allyn, August 31, 2010: US07784940 (2 worldwide citation)


There is described in one embodiment an eye viewing device for viewing a structure of an eye such as a retina. The eye viewing device can include an image sensor. In one embodiment an eye viewing device can be adapted to facilitate both visual viewing of an eye structure and electronic image capture ...


20
Eric M Andreassen, David M Fallat, Ervin Goldfain, John R Strom, John T Delaney, Howard Haines III, Corinn Fahrenkrug, Cynthia A Kuiper: Digital otoscope. Welch Allyn, Sonny Z Zhan, November 29, 2011: US08066634 (2 worldwide citation)


A digital otoscope for capturing live and still digital images of body tissue and having associated optical characteristics that improve the quality of visual information gathered for medical inspection of both human and veterinary subjects. The digital otoscope includes a tip element having dimensi ...



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