Fig. 1. Structure of equal-thickness binary structure zero-order wave plate. (a) Coordinate system; (b) section view

Fig. 2. Optical path in crystal plate 2. (a) Positive uniaxial birefringent crystal; (b) negative uniaxial birefringent crystal

Fig. 3. Comparison of spectral characteristics between equal-thickness binary structure zero-order waveplate and conventional zero-order waveplate

Fig. 4. Variation curve of phase delay deviation with thickness deviation

Fig. 5. Variation curve of phase delay deviation with deviation of optical axis angle

Fig. 6. Experimental and theoretical phase delay of sample 1

Fig. 7. Experimental and theoretical phase delay of sample 2