Optical Properties of the Unactivated State

The principles of operation described in above are only valid in the so-called Mau- 

Minima of the Gooch and Tarry curve for NB-mode Birefringence, An  

For the NB mode, intensity minima of the transmitted luminance are calculated for dAn=0.48 pm, 1,09 pm and 1.68 pm which correspond to the minima of the Gooch and Tarry transmitted intensity for a wavelength A=0.55 pm. Operation in the 1 st minimum is mostly used in TFT displays as it offers a wider viewing angle [15, 16]. The 2nd minimum condition is used in watches and calculators. 

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