Design and study of plane lens with band discretization

环带数N	1	2	3	4	5	6	7
半径/μm	0	3.287 0	3.240 6	3.163 3	3.055 4	2.916 9	2.748 3
环带数N	8	9	10	11	12	13	14
半径/μm	2.549 6	2.321 4	2.064 0	1.777 9	1.463 5	1.121 3	7.519 6
环带数N	15	16	17	18	19	20	21
半径/μm	3.559 6	3.236 4	2.788 9	2.316 7	1.820 3	1.300 5	7.578 9

Table 2. Annular band phase of discretized planar lens

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Table 2. Annular band phase of discretized planar lens

环带数N	1	2	3	4	5	6	7
相位 /π	0	1.990	1.962 5	1.915 7	1.850 3	1.766 5	1.664 3
环带数N	8	9	10	11	12	13	14
相位/π	1.544 0	1.405 8	1.249 9	1.076 7	0.886 2	0.679 0	0.455 3
环带数N	15	16	17	18	19	20	21
相位/π	0.215 5	1.959 9	1.689 0	1.403 0	1.102 4	0.787 6	0.459 0

Table 3. Annular band radii of discretized planar lens

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Table 3. Annular band radii of discretized planar lens

环带数N	1	2	3	4	5	6	7
半径/μm	0.133 4	0.985 7	0.969 6	0.947 4	0.924 2	0.904 0	0.888 5
环带数N	8	9	10	11	12	13	14
半径/μm	0.875 7	0.860 8	0.837 9	0.802 5	0.753 2	0.688 4	0.595 8
环带数N	15	16	17	18	19	20	21
半径/μm	0.427 7	0.968 3	0.891 6	0.860 5	0.808 5	0.723 9	0.597 6

Table 4. Performance parameters of metasurface, MDL and discrete planar lenses
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Table 4. Performance parameters of metasurface, MDL and discrete planar lenses
参数 f /μm FWHM h/d T/%
超表面 120 8.4 18∶1 85
多级衍射透镜 120.8 8.16 1.06∶1 56.77
离散化平面透镜 118 8.2 8.9∶1 76

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Xinxin PU, Jinyao HOU, Wenhao GUO, Xueping SUN, Yibo XIE, Jin CHENG, Shun ZHOU, Weiguo LIU. Design and study of plane lens with band discretization[J]. Journal of Applied Optics, 2025, 46(2): 269

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