Wetcell device for inspection

a wet cell and lens technology, applied in the direction of measurement devices, structural/machine measurement, instruments, etc., can solve the problems of difficult to locate the lens, let alone inspect the lens, and achieve the effect of simple inspection system and without significant optical distortion
US20020196429A1Inactive Publication Date: 2002-12-26RUSSELL TODD ALDRIDGE +1
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
RUSSELL TODD ALDRIDGE
Publication Date
2002-12-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides an inspection cell for inspecting an ophthalmic lens. The inspection cell is a solid block that has a bottom planar surface, a top surface, and an indentation in the top surface. The indentation is adapted to receive an ophthalmic lens. which is to be inspected. The invention additionally provides an inspection unit for an ophthalmic lens, which holds one or more of the inspection cells.
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Description

BACKGROUND OF THE INVENTION

[0001] The present invention relates to a device that receives an ophthalmic article for an inspection.

[0002] Conventional production methods for producing ophthalmic lenses, e.g., contact lenses and intraocular lenses, include lathe cutting methods and cast molding methods. A lathe cutting method produces an ophthalmic lens by cutting a solid substrate of a polymeric optical material to a designed shape. A cast molding method uses a molding process to produce an ophthalmic lens. Typically, a lens mold having two mold halves. i.e., a front curve mold half and a back curve mold half, is used to mold a lens from a polymerizable liquid composition. Once the lens is produced and before it is packaged. the lens is inspected for flaws and damages that may be created or included during the production process.

[0003] Typically, a finished lens is inspected before the lens is packaged for sale. The inspection process for ophthalmic lenses, especially hydrogel lenses...

Claims

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