Methods and machines for producing optical components by additive manufacturing
By using a combination of different light penetration depths and curing energies in additive manufacturing, the problems of printing accuracy and optical uniformity of ophthalmic lenses have been solved, enabling the manufacture of optical components with high-precision geometry and uniform optical volume.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ESSILOR INTERNATIONAL(COMPAGNIE GENERALE D OPTIQUE)
- Filing Date
- 2021-12-21
- Publication Date
- 2026-06-30
AI Technical Summary
Existing additive manufacturing technologies struggle to achieve both high printing accuracy and uniform optical volume when manufacturing ophthalmic lenses, leading to diffraction defects and geometric inaccuracies.
By employing a combination of different light penetration depth values and curing surface energy, different regions of the optical element are cured layer by layer within the curable material using first and second light penetration depth values Dp1 and Dp2, and corresponding curing surface energies E1 and E2, ensuring that the material state differences between the skin and the core are minimized.
It achieves high-precision geometry and uniform optical volume of optical elements, reduces interlayer diffraction defects, and improves the performance of the lens.
Smart Images
Figure CN116802044B_ABST