1
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 ...


2
William H Lagerway, David G Perkins, William M Wrisley, Ronald A Hauptli: Objective lens system for imaging instrument. Welch Allyn, Wall Marjama & Bilinski, November 7, 2000: US06142934 (41 worldwide citation)


A retrofocus objective lens system which is conducive for an otoscope includes a first group of optical elements positioned at a distal portion and a second group of optical elements proximally spaced from the first group of optical elements. The first group of optical elements includes at least one ...


3
William H Lagerway, Jeffrey Perkins, Steven R Slawson: Lamp assembly. Welch Allyn, Wall Marjama & Bilinski, June 30, 1998: US05774271 (22 worldwide citation)


A lamp assembly includes a condensing lens group disposed at one end for collecting and collimating a light from a light source, an exit lens group at the other end of the assembly, including at least one objective lens element for projecting an illuminated light spot at a predetermined distance, an ...


4
Ervin Goldfain, Chris R Roberts, Allan I Krauter, Steven R Slawson, William H Lagerway: Eye viewing device for retinal viewing through undilated pupil. Welch Allyn, George S Blasiak, Wall Marjama & Bilinski, October 28, 2003: US06637882 (11 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 ...


5
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 ...


6
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 ...


7
Ervin Goldfain, Chris R Roberts, Allan I Krauter, Steven R Slawson, William H Lagerway: Eye viewing device comprising video capture optics. Welch Allyn, December 25, 2012: US08337017 (1 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 ...


8
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.


9
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.


10
Ervin Goldfain, Chris R Roberts, Allan I Krauter, Steven R Slawson, William H Lagerway: Eye viewing device comprising video capture optics. Hiscock & Barclay, February 7, 2008: US20080030683-A1


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 ...



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