Phase retardation of uniaxial media at oblique angles

5 Phase retardation of uniaxial media at oblique angles 

Both uniaxial compensation film and nematic LC layer can be treated as uniaxial media. When a light propagates into a uniaxial film, generally two forward eigenwaves (one ordinary wave 

In general, the phase retardation of a uniaxial medium at oblique incidence can be expressed as [28] 

From Equation (8.16), the phase retardation F is dependent on the optical axes orientation 9 and 4 n as well as the beam incident direction do and po- 

In the uniaxial-film-compensated LCDs, both a and c films are commonly used. In these two special cases. Equation (8.16) can be further simplified. 

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