Design Method of Irradiance Attenuator for Solar Simulator of Xenon Lamp

Fig. 4. Models of irradiance attenuators with different structures. (a) Irradiance attenuator with uniform mesh distribution; (b) irradiance attenuator with non-uniform mesh distribution

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Fig. 5. Sun simulator optical system modeling and simulation

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Fig. 6. Radiation distribution of the light output area under different attenuators. (a) Radiation distribution under attenuator with uniform mesh distribution; (b) radiation distribution under attenuator with non-uniform mesh distribution

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Fig. 7. Radiation distribution of the light inlet of the integrator under different attenuators. (a) Radiation distribution under attenuator with uniform mesh distribution; (b) radiation distribution under attenuator with non-uniform mesh distribution

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Fig. 8. Irradiance uniformity in the spot under different attenuators. (a) Irradiance uniformity under attenuator with uniform mesh distribution; (b) irradiance uniformity under attenuator with non-uniform mesh distribution

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Fig. 9. Irradiance attenuator test

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Fig. 10. Test method of irradiance non-uniformity

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Table 1. Irradiance in each band of attenuator
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Table 1. Irradiance in each band of attenuator
R_i /mm $F_{i (R_{i})}$ /W E_i / (W·mm^-2)
30 158.336 0.056
60 565.486 0.048
90 975.464 0.029
120 1232.760 0.013

Table 2. Mesh design parameters of attenuator
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Table 2. Mesh design parameters of attenuator
Radius /mm Total mesh area /mm² Radius of mesh /mm Number of mesh
0~30 1262.7 6 8
30~60 1474.9 6.5 12
60~90 2438.3 8 12
90~120 5442.6 10 18

Table 3. Irradiance non-uniformity test under different attenuators

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Table 3. Irradiance non-uniformity test under different attenuators

Centralirradiancesetting value /(W·m^-2)	Attenuator with uniformmesh distribution			Attenuator with non-uniformmesh distribution							Lower valueΔ /%	Reductionrate η /%
Centralirradiancesetting value /(W·m^-2)	E_max /(W·m^-2)	E_min /(W·m^-2)	ε_u /%	E_max /(W·m^-2)	E_min /(W·m^-2)		ε_n /%				Lower valueΔ /%	Reductionrate η /%
600	624		581			±3.57		613	590	±1.91	±1.66	46.5
500	522		483			±3.88		511	491	±1.99	±1.89	48.7
400	419		387			±3.97		409	392	±2.12	±1.85	46.6
300	315		290			±4.13		307	294	±2.16	±1.97	47.7
200	209		192			±4.24		204	195	±2.26	±1.98	46.7
100	105		96			±4.48		106	101	±2.42	±2.06	46.0

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Shi Su, Fanlin Meng, Guoyu Zhang, Shi Liu, Gaofei Sun, Jian Zhang, Songzhou Yang, Da Xu. Design Method of Irradiance Attenuator for Solar Simulator of Xenon Lamp[J]. Acta Optica Sinica, 2021, 41(2): 0208001

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