US 10,949,963 B2 · System and method for inspection of wet ophthalmic lens

Abstract

The present invention relates to an inspection system and more particularly to a system and method for inspection of wet ophthalmic lens, preferably in an automated lens manufacturing line. The inspection system provides for capturing multiple images of an ophthalmic lens using multiple cameras, each with a customized optical unit which may use wavelength filters, and the ophthalmic lens illuminated by multiple lighting modules each configured for a different wavelength, or a different polarization and triggered to strobe the illumination at the same instance or at different instances in the time domain. Suitable filters used in the optical module for each camera ensures appropriate images at different illuminating wavelength, especially when all the illuminations are strobed at the same time. Images captured and inspected by this configuration aids in improvement in method of inspection with enhanced degree of reliability and quality.

Claims13

Dependent claims

A vision system for inspection of ophthalmic lenses transported in an automatic production line comprising:

a plurality of Illuminating modules to illuminate the ophthalmic lens that emit light comprising different light technique;
a plurality of beam splitters for guiding the plurality of illumination to highlight the ophthalmic lens;
a plurality of beam splitters for receiving a plurality of conditioned images of the ophthalmic lens;
a plurality of filters for filtering the images of appropriate method;
a plurality of optical modules to acquire plurality of images of the ophthalmic lens, each of the plurality of the optical elements conditioning the image to enhance contrast of different defects of the ophthalmic lens;
a plurality of optical detectors to receive filtered and conditioned images;
a lens holder to transport the ophthalmic lens;
a image analyzing equipment to process and analyze the plurality of images for defects in the ophthalmic lens.

5 more elements

Dependencies are inferred from the claim text.

System and method for inspection of wet ophthalmic lens

Life of this patent

System and method for inspection of wet ophthalmic lens

Life of this patent

Abstract

Claims13