Transparent and polarizing viewing element having a zone associated with an obliquely oriented polarizing filter
US7656581B2 · kind B2 · utility
52Cited by
19References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 29, 2005 |
| Grant date | Feb 2, 2010 |
| Priority date | — |
| Expiry date | Apr 18, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA42B3/226
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The invention concerns a transparent and polarizing viewing element (2) divided into several zones (2a, 2b). At least one of the zones (2a) is associated with a light polarizing filter. The light passing through the optical surface is affected differently for two of said zones (2a, 2b) depending on the polarizing direction of said light. The polarizing filter is obliquely oriented relative to a horizontal direction (H) in the operational position of the element (2; 5), with an angle between the filter orientation and said horizontal direction of 90 degrees and of 0 degree.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.