Polarizing optical element comprising a polarizing film and method for manufacturing such element
US7581832B2 · kind B2 · utility
7Cited by
6References
34Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 16, 2006 |
| Grant date | Sep 1, 2009 |
| Priority date | — |
| Expiry date | Dec 4, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2011/0016
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A polarizing optical element comprises a transparent optical base element and a layered structure that incorporates a polarizing film. The polarizing film is of the dichroic dye type and is oriented uniaxially. The layered structure is bonded to the optical base element by means of a layered structure that includes at least one layer of a pressure-sensitive adhesive. Thanks to the use of pressure-sensitive adhesive, the polarizing film during the bonding operation maintains a high polarization efficiency and an optical quality compatible with many applications of the optical element, especially ophthalmic applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.