Reflective polarizers, which transmit one polarization and reflect the other polarization, have an extended red band edge in the off-axis transmission spectrum to control off axis color (OAC) hue. To control the OAC hue, the red band edge of the off-axis transmission spectrum, or OAC spectrum,...http://www.google.es/patents/US5808794?utm_source=gb-gplus-sharePatente US5808794 - Reflective polarizers having extended red band edge for controlled off axis color
Reflective polarizers having extended red band edge for controlled off axis ...
