Invention Grant
- Patent Title: Curved retarder-based optical filters
- Patent Title (中): 基于弯曲阻尼器的滤光器
-
Application No.: US12249876Application Date: 2008-10-10
-
Publication No.: US08687275B2Publication Date: 2014-04-01
- Inventor: David A. Coleman , Gary D. Sharp
- Applicant: David A. Coleman , Gary D. Sharp
- Applicant Address: US CA Beverly Hills
- Assignee: RealD Inc.
- Current Assignee: RealD Inc.
- Current Assignee Address: US CA Beverly Hills
- Agent Neil G. J. Mothew; Darlene K. Kondo
- Main IPC: G02B5/30
- IPC: G02B5/30

Abstract:
Curved polarization filters and methods of manufacturing such filters. The method includes laminating a planar polarization layer to a planar retarder layer at a predetermined orientation and bending the laminate to create a curved filter. The strain on the retarder layer results in stress-induced birefringence, and the predetermined orientation of the retarder substantially compensates for the stress-induced birefringence. In some embodiments, the predetermination is based on mathematical models. In some other embodiment, the predetermination is based on experimental data.
Public/Granted literature
- US20090097117A1 CURVED OPTICAL FILTERS Public/Granted day:2009-04-16
Information query