Off-Axis Transmission, Viewing Angle, and Birefringence Compensation

Off-Axis Transmission, Viewing Angle, and Birefringence Compensation 

This gives a phase shift A4 between the extraordinary and ordinary waves (which sees an index of rio), 

Consider the limiting case of j) = 0. This corresponds, for example, to the director axis reorientation of a TN cell at high appUed voltage, or a homeotropic cell at F = 0. In that case, we have 

For arbitrary angle 4) or director axis angular and spatial distributions, and more complicated cell structure, the phase shift, and therefore the transmission of light through the cell and other accompanying polarization selective elements, is not amenable to simple analytical treatment. More sophisticated Jones matrix methods or nmnerical technique such as the finite difference time domain (FDTD) nmnerical methods discussed in the next chapter are needed to solve such a complex propagation problem. 

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