The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 01, 1998
Filed:
Feb. 06, 1997
W Michael Lafferty, Leucadia, CA (US);
Charles S Slemon, Encinitas, CA (US);
W James Frandsen, San Diego, CA (US);
PBH, Inc., Sunnyvale, CA (US);
Abstract
An ophthalmic lens inspection system includes an illumination assembly which generates diffuse light and transmits the diffuse light through an ophthalmic lens disposed in an inspection position, the diffuse light having a diffusivity of between 30.degree. and 50.degree.. An imaging assembly generates a set of signals representing selected portions of the diffuse light transmitted through the ophthalmic lens in the inspection position. A moving mechanism supports the imaging and illumination assemblies for common movement relative to the contact lens, to bring a reference point into alignment with the center of the imaging assembly.