200mm & 250mm Fresnel Lens

　

Fresnel Lens ψ200mm & 250mm Simulation

Light source：CREE CXA2590
Flux：10,000 lm

Fig. 1 CREE CXA2590

Table 1：Simulation results

Lens diameter	Lens focal length	Light collection angle	Efficiency	Beam Angle (Full)	7m Maximum luminance (theoretical)
250mm	160mm	38	63.07%	9.69	3551.9631229977840000Lux
200mm	128mm	38	63.32%	12.09	2282.1793524316722000Lux

Simulation:

The results of 200mm Fresnel Lens are similar to that of 250mm one，the difference is larger beam angle, larger light pattern and lower luminance value.

Fig. 2 250mm Fresnel Lens section dimensions





Fig. 3 250mm Fresnel Lens ray-tracing



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Fig. 4 (a)~(f) 250mm Fresnel Lens Light pattern and illuminance analysis in 7 meters distance



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Fig. 5 (a)~(d) 250mmFar field light angle distribution