4 Degree Fresnel Lens

 

4 Degree Fresnel Lens



Light source:CREE CXA1520
Flux:~1830 lm



Fig. 1 CREE CXA1520

Table 1:Simulation results

Lens
diameter
Lens focal
length
Beam Angle
(Full)
Maximum
Intensity
7m Maximum luminance
(theoretical)
200mm 128mm 3.55° 219905.58Cd 4662.12Lux

Simulation:

LED flux: 1830lumen
Screen: 7m distance(distance between 2 walls inside a room):



Fig. 2 200mm Fresnel Lens section dimensions





Fig. 3 200mm Fresnel Lens ray-tracing



(a)



(b)



(c)



(d)



(e)



(f)

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



(a)



(b)



(c)



(d)



(e)

Fig. 5 (a)~(e) 200mmFresnel Lens Far field light angle distribution