Method of creating ophthalmic lenses using modulated energy
Patent Information
- Application Number
- SG200905075
- Authority / Receiving Office
- SG · SG
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2004-07-30
- Filing Date
- 2005-07-29
- Publication Date
- 2009-09-30
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing manufacturing processes for ophthalmic lenses require a large number of molding tools and molds to produce lenses with varying parameters, leading to high costs and complexity, especially for multifocal and customized lenses that need to correct multiple vision defects like astigmatism and presbyopia.
A method involving the use of a modulated energy source, such as UV radiation, to create lenses with spatially distributed refractive indices in the optical zones, allowing for the design and manufacture of lenses with multiple zones and configurations, including holographic patterns, using fluid optical material and molds with dynamic light modulation techniques like digital mirror devices.
This approach reduces the need for multiple molding tools, enables cost-effective production of customized lenses, and allows for precise correction of vision defects by altering the refractive index distribution within the lens, thereby simplifying the production of lenses for multiple vision corrections.