A polarization separation mirror is made by evaporation-depositing a first multi-layers thin film and a second multi-layers thin film respectively on both surfaces of a transparent substrate, the mirror acts as a polarization beam splitter by cementing it between two transparent prism bodies. By shifting...http://www.google.com.au/patents/US5579138?utm_source=gb-gplus-sharePatent US5579138 - Polarizer having a glass substrate with films on either side with different wavelength characteristics and projection display using same
Polarizer having a glass substrate with films on either side with different ...
