Invention Grant
- Patent Title: Ophthalmic lens to preserve macular integrity
- Patent Title (中): 眼科镜片保留黄斑完整性
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Application No.: US11303433Application Date: 2005-12-16
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Publication No.: US08403478B2Publication Date: 2013-03-26
- Inventor: Andrew Ishak
- Applicant: Andrew Ishak
- Applicant Address: US VA Roanoke
- Assignee: High Performance Optics, Inc.
- Current Assignee: High Performance Optics, Inc.
- Current Assignee Address: US VA Roanoke
- Main IPC: G02C7/10
- IPC: G02C7/10 ; G02C7/04 ; G02C7/02

Abstract:
An improved lens with Rugate filter specifically designed to be worn in prescription and non-prescription glasses, contact lenses, intraocular lenses and sunglasses, and to provide protection against macular degeneration by reducing harmful visible blue light transmission and ocular photochemical damage. The lens at least includes a single lens layer with a Rugate filter deposited thereon to selectively block visible blue light. Other layers may be added including a polarizing layer, dielectric layer and/or color tint in a lens sandwich configuration, to additionally give a high degree of UVA and UVB protection, color contrast, and glare reduction. The Rugate filter is a stop band which yields an exceptional light transmission profile under all light conditions, thereby maximizing protection as well as clarity of vision. In the multi-layer embodiment, all of the lens layers provide comprehensive protection for preventing macular degeneration, cataracts and other ocular injuries, yet maintain a balanced light transmission profile for visual acuity.
Public/Granted literature
- US20060092374A1 Rugate optical lens to prevent macular degeneration Public/Granted day:2006-05-04
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