Indirect ophthalmoscopy lens two piece retaining ring
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FIG. 1 is a side elevational view of an unattached indirect ophthalmoscopy lens retaining ring, showing the new design according to a first embodiment;
FIG. 2 is a side elevational view of the attached indirect ophthalmosopy lens retaining ring, showing the new design according to the first embodiment;
FIG. 3 is a cross-sectional view taken along line 3--3 of FIG. 2 where the indirect ophthalmoscopy lens is clearly shown;
FIG. 4 is an end elevational view taken from the right of FIG. 2;
FIG. 5 is an end elevational view taken from the left of FIG. 2;
FIG. 6 is a side elevational of an unattached indirect ophthalmoscopy lens retaining ring, showing the new design according to a second embodiment;
FIG. 7 is a side elevational view of the attached indirect ophthalmoscopy lens retaining ring, showing the new design according to a second embodiment;
FIG. 8 is a cross-sectional view taken along line 8--8 of FIG. 7 where the indirect ophthalmoscopy lens is clearly shown;
FIG. 9 is an end elevational view taken from the right of FIG. 7; and,
FIG. 10 is an end elevational view taken from the left of FIG. 7.
Type: Grant
Filed: Feb 9, 1999
Date of Patent: Nov 28, 2000
Assignee: Volk Optical, Inc. (Mentor, OH)
Inventors: Richard M. Mueller (Mentor, OH), Donald A. Volk (Mentor, OH)
Primary Examiner: Stella Reid
Attorney: Venable
Application Number: 0/100,339
