DS155 LUXEON CoB Core Range (Gen 2) Product Datasheet 20161105 ©2016 Lumileds Holding B.V. All rights reserved.

18

Color Bin Definition

Table 5. 3-step MacAdam ellipse color bin definitions for LUXEON CoB Core Range (Gen 2).

nomInal cct

color sPace

center PoInt

(cx, cy)

maJor aXIs,

a

mInor aXIs,

b

ellIPse rotatIon

anGle, θ

2200K

Single 3-step MacAdam ellipse

(0.5020, 0.4155)

0.00862

0.00397

49.30°

2700K

Single 3-step MacAdam ellipse

(0.4578, 0.4101)

0.00810

0.00420

53.70°

3000K

Single 3-step MacAdam ellipse

(0.4338, 0.4030)

0.00834

0.00408

53.20°

3500K

Single 3-step MacAdam ellipse

(0.4073, 0.3917)

0.00927

0.00414

54.00°

4000K

Single 3-step MacAdam ellipse

(0.3818, 0.3797)

0.00939

0.00402

53.70°

5000K

Single 3-step MacAdam ellipse

(0.3447, 0.3553)

0.00822

0.00354

59.60°

5700K

Single 3-step MacAdam ellipse

(0.3287, 0.3417)

0.00745

0.00320

59.09°

Notes for Table 5:

1. Lumileds maintains a tolerance of ±0.005 on x and y coordinates in the CIE 1931 color space.

Figure 7: 3-step MacAdam ellipse illustration for Table 5 .