Back to results
US 12,222,532 B2Granted
Optical element and method for manufacturing the same
AssigneeAGC Inc.
InventorsKenta Sekikawa, Hiromichi Nagayama, So Ishido
Life of this patent
Estimating the term…
Abstract
An optical element includes a three-dimensional structure having a curved surface; and a retardation plate bent along the curved surface. The retardation plate includes a transparent substrate and a liquid crystal layer formed over the transparent substrate. The retardation plate has a slow axis and a fast axis. A glass-transition temperature, Tgne, in a slow axis direction of the retardation plate is higher than a glass-transition temperature, Tgno, in a fast axis direction of the retardation plate.
Claims6
An optical element comprising:
- a three-dimensional structure having a curved surface;
- and
- a retardation plate bent along the curved surface, wherein
- the retardation plate includes a transparent substrate and a liquid crystal layer formed over the transparent substrate,
- the retardation plate has a slow axis and a fast axis, and
- a glass-transition temperature, Tgne, in the slow axis direction of the retardation plate is higher than a glass-transition temperature, Tgno, in the fast axis direction of the retardation plate.
3 more elements
Dependencies are inferred from the claim text.