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.: US14216561Application Date: 2014-03-17
-
Publication No.: US09457523B2Publication Date: 2016-10-04
- Inventor: David A. Coleman , Gary D. Sharp
- Applicant: RealD Inc.
- 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; Penny L. Lowry
- Main IPC: B29D11/00
- IPC: B29D11/00 ; B32B38/18 ; G02B5/30 ; G02B27/26 ; B32B37/12

Abstract:
Curved polarization filters and methods of manufacturing such filters are described in the present disclosure. An exemplary 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
- US20140373997A1 Curved retarder-based optical filters Public/Granted day:2014-12-25
Information query