The openness of following case has been allowed by our clients with exception of key parameters, which is only 90% of complete design process.

I. Requirement

a.       10 LED of 0.5w each required,

b.      Luminance:  within circular region in diameter 1m and 1m far, the minimum illumination of central highlight is 300Lux, and that of lowlight in edge is above 100Lux

c.       Luminance uniformity of spot: within diameter 1m spot region, no obvious bright spot or dark spot, but even brightness transition; without obvious bright spot in the center, let alone 10.

d.       Size: 76(L)x39(W)x6.2mm(H)

II. Result