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:
Oct. 08, 2019
Filed:
Nov. 10, 2015
Verily Life Sciences Llc, Mountain View, CA (US);
Joshua N. Haddock, Mountain View, CA (US);
Verily Life Sciences LLC, South San Francisco, CA (US);
Abstract
A multi-layer lens stack includes first liquid crystal material enclosed between a first diffractive lens structure and a first substrate surface having a first alignment layer disposed thereon, and second liquid crystal material enclosed between a second diffractive lens structure and a second substrate surface having a second alignment layer disposed thereon. The first and second liquid crystal materials assume a homeotropic alignment relative to the first and second substrate surfaces, respectively, in a first mode. The first alignment layer is configured to align the first liquid crystal material along a first direction and the second alignment layer is configured to align the second liquid crystal material along a second direction, substantially orthogonal to the first direction, in a second mode. The multi-layer lens stack has a first optical power in the first mode and a second optical power, different from the first optical power, in the second mode.