MANDREL FOR USE IN THE MACHINING OF OPHTHALMIC LENSES
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United States of America
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Issued Date -
Apr 3, 2025
app pub date -
Oct 26, 2023
filing date -
Oct 26, 2023
priority date (Note) -
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status (Latency Note)
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Abstract
A mandrel 1 for holding an ophthalmic lens member blank 52 during machining is disclosed. The mandrel 1 comprises a front surface 6 for receiving an ophthalmic lens member blank 52 to be machined; a rear surface 8 opposite the front surface 6; and one or more through-holes 10 extending between the front and rear surfaces 6,8. In use, wax applied to the rear surface 8 contacts an ophthalmic lens member blank 52 received on the front surface 6 via said one or more through-holes 10. Methods of producing an ophthalmic lens using such a mandrel and lenses produced using such a mandrel are also disclosed.
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