公开(公告)号：US12204180B2

公开(公告)日：2025-01-21

申请号：US17693493

申请日：2022-03-14

Applicant: Khalifa University of Science and Technology

Inventor： Haider Butt ,  Mohamed Elsherif

IPC: G02C7/04 ,  A61B5/00

Abstract: Embodiments of the present disclosure describe a biomarker-responsive bifocal contact lens comprising a monovision contact lens having a first focal length and a Fresnel contact lens having a second focal length, wherein the Fresnel contact lens comprises a biomarker-responsive hydrogel, and wherein the Fresnel contact lens is disposed on an outer surface of the monovision contact lens, wherein an optical characteristic of the Fresnel contact lens changes in response to the biomarker concentration in the ocular fluid.

公开(公告)号：US11143815B1

公开(公告)日：2021-10-12

申请号：US16848698

申请日：2020-04-14

Applicant: Khalifa University of Science and Technology ,  The University of Birmingham

Inventor： Haider Butt ,  Mohamed Elsherif

IPC: G02B6/02 ,  G02B3/00 ,  B29D11/00 ,  G02B6/32 ,  F21V8/00 ,  G02B6/12

Abstract: Embodiments include a fiber optic probe comprising an optical fiber, and a sensor component attached to the optical fiber, the sensor component including an asymmetric microlens array imprinted on a stimuli-responsive hydrogel. Embodiments further include a method of fabricating a fiber optic probe comprising depositing a stimuli-responsive hydrogel precursor solution on a substrate mold, the substrate mold including a concave asymmetric microlens array; contacting an end of an optical fiber with the stimuli-responsive hydrogel precursor solution deposited on the substrate mold; and exposing the end of the optical fiber and the stimuli-responsive hydrogel precursor solution to light to form a stimuli-responsive hydrogel sensor imprinted with a convex asymmetric microlens array and attached to the end of the optical fiber. Embodiments further include systems comprising the fiber optic probes.

公开(公告)号：US11899289B2

公开(公告)日：2024-02-13

申请号：US17307316

申请日：2021-05-04

Applicant: Khalifa University of Science and Technology

Inventor： Haider Butt ,  Mohamed Elsherif

IPC: G02C7/04 ,  G02C7/02 ,  G02C7/10 ,  B29D11/00 ,  B29L11/00

CPC classification number: G02C7/049 ,  B29D11/00038 ,  G02C7/024 ,  G02C7/108 ,  B29L2011/0041 ,  G02C2202/10

Abstract: An ophthalmic contact lens configured to treat color vision deficiency is presented herein. The contact lens includes a tinted region containing either or both of a first dye that is configured to absorb at least 50% of incident light in a spectral band between 480 nanometers to 500 nanometers and a second dye that is configured to absorb at least 50% of incident light in a spectral band between 550 nanometers to 580 nanometers. A method of manufacturing such a contact lens and a process of forming an ophthalmic contact lens by an additive manufacturing process is also presented.