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US 8,944,596 B2Granted
Digital-based medical devices
AssigneeWelch Allyn, Inc.
InventorsRobert J. Wood, Raymond A. Lia, Jon R. Salvati, Robert L. Vivenzio, Ian K. Edwards, Ervin Goldfain
Life of this patent
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Abstract
A hand held ophthalmic examination instrument uses an illumination system that provides amber colored light from a first light source and white light from a second light source to illuminate a target of interest. An imaging system in cooperation with the illumination system captures digital images of the target of interest as illuminated by the light sources.
Claims28
A hand held ophthalmic examination instrument comprising:
- an illumination system for providing illuminating light, the illumination system directing the illuminating light toward a target of interest, said illumination system including:
- a first light source emitting the illuminating light at a wavelength of between about 550 nm and about 600 nm;
- a second light source for emitting a flash of white light, wherein said illumination system directs both the illuminating light and the flash of the white light toward the target of interest;
- and
- at least one lens for directing light rays of the illuminating light and of the flash of white light in preselected directions toward the target of interest;
- an imaging system for directing the illuminating light as reflected from the target of interest to a viewing location, said imaging system including:
- a digital imager at said viewing location for detecting and capturing a digital image of the target of interest;
- and
- a digital display electrically connected to the digital imager for displaying the captured digital image of the target of interest;
- a memory for storing the captured digital image of the target of interest;
- and
- a processor electrically connected to the memory, the illumination system, and the imaging system for controlling operation thereof.
9 more elements
A method of performing an ophthalmic examination, the method comprising the steps of:
- illuminating a target of interest using amber light comprising wavelengths of between about 550 nm and about 600 nm;
- and
- simultaneously with said step of illuminating, illuminating the target of interest using white light;
- and
- simultaneously with said step of illuminating the target of interest using white light, capturing a digital still image of the target of interest.
2 more elements
Dependencies are inferred from the claim text.