Optics: eye examining – vision testing and correcting – Eye examining or testing instrument
Reexamination Certificate
2005-09-06
2005-09-06
Manuel, George (Department: 3762)
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Reexamination Certificate
active
06939006
ABSTRACT:
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 light rays into an eye, wide field retinal illumination, reduced glare and reduced power consumption. The aperture stop blocks unwanted received glare light not forming part of the retinal image. The device is made especially well suited for retinal viewing through an undilated pupil if the aperture is sized in accordance with the diameter of an undilated pupil.
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Goldfain Ervin
Krauter Allan I.
Lagerway William
Roberts Chris R.
Slawson Steven R.
Manuel George
Wall Marjama & Bilinski LLP
Welch Allyn Inc.
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