WILLIAM CLARK CRONIN
Pilots at Sandpiper, Irvine, CA
License number
California A2440591
Issued Date
Apr 2016
Expiration Date
Oct 2016
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
38 Sandpiper, Irvine, CA 92604
Professional information
Variable Prism Eyeglasses
US Patent:
8157375, Apr 17, 2012
Filed:
Mar 21, 2011
Appl. No.:
13/052892
Inventors:
John V. Cronin - Newport Beach CA, US
William C. Cronin - Irvine CA, US
William C. Cronin - Irvine CA, US
International Classification:
G02C 7/14
US Classification:
351175, 351159, 351177
Abstract:
The present invention is directed to an eyeglass device that has manually variable prisms to correct strabismus; that is, double vision. The variable prism eyeglasses consist of an eyeglass frame that holds two primary rings in position and provides baseline reference points for alignment. Prism lenses and corrective lenses fit inside the primary rings and allow the two prism lenses of each primary ring to rotate independently and to hold the corrective lens fixed in place relative to the primary rings. Detent channels on the upper surface and lower surface of the primary rings are the means by which the prisms are adjusted. Each prism lens is moved and positioned via a prism lens pin located in the base of each prism lens. The prism lens pins fit into the detents in the detent channels of the primary ring. The detent selected determines the amount of corrective power the prisms will produce.