Method for coloring an optical element in a non-uniform linear pattern
US10994563B2 · kind B2 · utility
1Cited by
8References
19Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 10, 2015 |
| Grant date | May 4, 2021 |
| Priority date | — |
| Expiry date | Mar 10, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/105
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for coloring an optical element in a non-uniform linear pattern is provided. The method includes (a) preparing at least one colorant composition containing at least one photochromic material; (b) depositing the colorant composition on at least one surface of the optical element in a controlled, predetermined pattern using an inkjet printing apparatus to provide a linearly gradient color pattern on the optical element when the optical element is exposed to actinic radiation; and (c) drying the colorant composition on the surface of the optical element. An optical element prepared by the method also is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.