DS51 Datasheet, PDF (7/41 Pages) Lumileds Lighting Company – the most robust and powerful LED

Optical Characteristics
LUXEON K2 at Test Current^[1]
Junction Temperature, T_J = 25°C
Color
Cool White
Neutral White
Warm White
Green
Cyan
Blue
Royal Blue^[3]
Red
Red Orange
Amber
Table 3.
Dominant Wavelength ^[2] λ_D,
Peak Wavelength ^[3] λ_P,
or Color Temperature ^[4]
CCT
Min.
Typ.
Max.
4500 K
6500 K
10000 K
3500K
4100K
4500K
2650K
3000K
3500K
520 nm
530 nm
550 nm
490 nm
505 nm
520 nm
460 nm
470 nm
490 nm
440 nm
455 nm
460 nm
620.5 nm 627 nm
645 nm
613.5 nm 617 nm 620.5 nm
584.5 nm 590 nm
597 nm
Typical
Spectral
Half width ^[6]
(nm)
Δλ_1/2
35
30
25
20
20
20
14
Typical
Temperature
Coefficient of
Dominant
Wavelength
(nm/^oC)
Δλ_D/ ΔT_J
0.04
0.04
0.04
0.04
0.05
0.06
0.09
Typical
Total
Included
Angle ^[7]
(degrees)
θ_0.90V
160
160
160
160
160
160
160
160
160
160
Typical
Viewing
Angle ^[8]
(degrees)
2θ 1/2
140
140
140
140
140
140
140
140
140
140
Notes for Table 3:
1. Test current is 350 mA for all LXK2 xxx2 xxx (L2K2 xxx2 11 xxxx for K2 Star) products, and 1000 mA for all
LXK2 xxx4 xxx products (L2K2 xxx4 11 xxxx for K2 Star).
2. Dominant wavelength is derived from the CIE 1931 Chromaticity diagram and represents the perceived color. Philips
Lumileds maintains a tolerance of ± 0.5 nm for dominant wavelength measurements.
3. Royal blue product is binned by radiometric power and peak wavelength rather than photometric lumens and dominant
wavelength. Philips Lumileds maintains a tolerance of ± 2nm for peak wavelength measurements.
4. CCT ±5% tester tolerance
5. Typical CRI (Color Rendering Index) for Cool White product is 70, Neutral White is 75, and Warm White is 80.
6. Spectral width at ½ of the peak intensity.
7. Total angle at which 90% of total luminous flux is captured.
8. Viewing angle is the off axis angle from lamp centerline where the luminous intensity is ½ of the peak value.
9. All white, green, cyan, blue and royal blue products are built with Indium Gallium Nitride (InGaN).
10. All red, red orange and amber products are built with Aluminum Indium Gallium Phosphide (AlInGaP).
11. Blue and royal blue power light sources represented here are IEC825 class 2 for eye safety.
LUXEON K2 Datasheet DS51 (7/07)
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