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US 6,270,219 B1Granted
Plastic trial lens, its injection molded article and its molding apparatus
AssigneeHoya Corporation
InventorKiyohiro Saito
Life of this patent
Estimating the term…
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AssigneeHoya Corporation
InventorKiyohiro Saito
Estimating the term…
A plastic trial lens having a grip portion gripped when the lens is set in trial frames for trial lenses, an injection molded product for making the trial lenses, and a mold assembly for molding the injection molded product are provided. In the injection molded product molded by means of the mold assembly in an injection compression molding machine, a grip portion and a liquid guided and collected area are molded simultaneously with a lens portion on a periphery of the lens portion. When the injection molded product is dipped into hard coat liquid, the hard coat liquid is guided in the liquid guided and collected area to drip down and the remaining liquid without dripping down is collected in the liquid guided and collected area, thereby forming a coating film of uniform thickness on the lens portion. The plastic trial lens which is integrally provided with the grip portion is finished after the liquid guided and collected area is removed.
An injection molded product for making plastic trial lenses comprising:
An injection molded product for making plastic trial lenses comprising:
A plastic trial lens comprising:
A plastic trial lens comprising:
Dependencies are inferred from the claim text.