Jia Si, Zexin Feng, Dewen Cheng, Yongtian Wang. Freeform Surface Beam Splitter for Discrete Spot Array with Prescribed Energy Proportion[J]. Acta Optica Sinica, 2020, 40(17): 1722004
- Acta Optica Sinica
- Vol. 40, Issue 17, 1722004 (2020)
Fig. 1. Design schematic of free-form beam splitter
Fig. 2. Schematic of subarea division of incident beam
Fig. 3. Schematic of ray map from subarea Bn,m to corresponding spot area Ωn,m
Fig. 4. Schematic of relationships between freeform surface data points and normal vectors
Fig. 5. Model of FBS 1 and ray tracing illustration
Fig. 6. Ray tracing simulation results of FBS 1. (a) 2D spot array; central irradiance profiles of (b) 5th column and (c) 1st row
Fig. 7. Physical optical simulation results of FBS 1. Simulated spot of A3,3 (a) true color, (b) false color; simulated spot of A1,1 (c) true color, (d) false color
Fig. 8. FBS 2 model, ray tracing and energy scale diagram. (a) Model of FBS 2 and ray tracing illustration; (b) predefined energy proportion of target spot array
Fig. 9. Ray tracing simulation results of FBS 2. (a) 2D spot array; central irradiance profiles of (b) 1st, (c) 2nd, (d) 3rd, (e) 4th, and (f) 5th column
Fig. 10. Physical optical simulation results of FBS 2. Simulated spot of A3,3 (a) true color, (b) false color; simulated spot of A1,1 (c) true color, (d) false color
Fig. 11. Edge profiles and sag mutation curves of sub-surfaces of FBS 1. (a) A1 and A5; (b) A2 and A4; (c) A3; (d) sag mutation curves between adjacent sub-surfaces
Fig. 12. Edge profiles and sag mutation curves of sub-surfaces of FBS 2. (a) A1; (b) A2; (c) A3; (d) A4; (e) A5; (f) sag mutation curves between adjacent sub-surfaces
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