Method and apparatus for cleaning ophthalmic lenses and blocks
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Aug 29, 2000
Issued Date -
N/A
app pub date -
Nov 24, 1999
filing date -
Nov 19, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process and machine for cleaning ophthalmic lenses and blocks heats a washing solution in a wash tank and a rinsing solution in a rinse tank to approximately 140.degree. F. Ultrasonic wave agitation is then initiated in the solutions. A set of lenses or blocks is immersed in the ultrasonically agitated washing solution for approximately one-half the predetermined time of the wash cycle. Mechanical agitation of the immersed set of lenses or blocks is initiated in the ultrasonically agitated washing solution for the remainder of the predetermined time of the wash cycle. The set of lenses or blocks is then raised above the washing solution for a predetermined drip period. The set of lenses or blocks is then immersed in the ultrasonically agitated rinsing solution for approximately one-half the predetermined time of the rinse cycle. Mechanical agitation of the immersed set of lenses or blocks is initiated in the ultrasonically agitated rinsing solution for the remainder of the predetermined time of the rinse cycle. The set of lenses or blocks is then raised above the rinsing solution for a predetermined drip period.
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