POLARIZATION CONVERSION ELEMENT, PROJECTOR, AND METHOD FOR MANUFACTURING POLARIZATION CONVERSION ELEMENT

摘要

A polarization conversion element includes first light transmissive substrates and second light transmissive substrates each of which has a light incident surface and a light exiting surface and which are disposed alternately, polarization separation films, reflection films, and retardation plates. One of each of the polarization separation films and a plasma polymerization film is formed on a first surface of each of the first light transmissive substrate. Each of the reflection films is formed on a second surface of each of the first light transmissive substrate. An adhesive layer is formed on a first surface of each of the second light transmissive substrates. The other of each of the polarization separation films and the plasma polymerization films is formed on a second surface of each of the corresponding second light transmissive substrates.

主权项

1. A polarization conversion element comprising:
first light transmissive substrates and second light transmissive substrates each of which has a light incident surface and a light exiting surface and which are disposed alternately; polarization separation films that are obliquely disposed with respect to the light incident surfaces and separate incident light into two types of linearly polarized light; reflection films that are disposed in parallel to the polarization separation films and reflect one of the two types of linearly polarized light separated by the polarization separation films; and retardation plates that convert one of the two types of linearly polarized light separated by the polarization separation films, wherein one of each of the polarization separation films and a plasma polymerization film is formed on a first surface of each of the first light transmissive substrates, each of the reflection films is formed on a second surface of each of the first light transmissive substrates, an adhesive layer is formed on a first surface of each of the second light transmissive substrates, and the other of each of the polarization separation films and the plasma polymerization films is formed on a second surface of the corresponding second light transmissive substrate.