© Xicato Inc. Application Note: Asymmetric XLM 04/9/13 1

Application Note – Asymmetric XLM Reflector Version 20111010

Introduction: To address the wall wash and indirect illumination market, Xicato has teamed up with industry experts to create a one-of-a-kind optical solution that out-performs many lamp/reflector combinations used in traditional luminaires. The combination of very high efficiency (LOR > 90%) combined with unprecedented beam uniformity across the illuminated surface makes it an ideal candidate to displace existing technologies.

System: Fig. 1 shows a Xicato XLM w/ heatsink combined with the specially designed asymmetric reflector. The heatsink shown in Fig. 1 may be excluded by incorporating heatsinking into the luminarie housing design for a more aesthetic fixture. The inside curvature geometry of the reflector is critical to beam performance; the external flange design can be modified to accommodate different luminarie designs.

Applications: • Vertical wall wash – track mount (Fig. 2), pendant mount (Fig. 3), and semi-

recessed (Fig. 4) • Billboard & signage illumination (Fig. 5) • Ceiling wash (Fig. 6)

Fig. 2: Track mount wall wash Fig. 1: Asymmetric XLM reflector on a heat-sink

67mm 84mm

68mm 88mm

© Xicato Inc. Application Note: Asymmetric XLM 04/9/13 2

Design requirements:

The fixture can be track mount (Fig. 2), pendant mount (Fig. 3), semi-recessed (Fig. 4), or billboard/signage mount (Fig. 5).

Rotation angle from mounting surface: 30º (see Fig. 2).

Distance from the surface (wall-wash & billboard applications): 1.5m (see Fig. 2)

Ideal fixture to fixture spacing (wall-wash & billboard applications): 1.5m (see Fig. 3)

Fig. 3: Pendant mount wall wash

1.5m 1.5m

Fig. 6: Ceiling wash

Fig. 4: Semi-recessed wall wash

Fig. 5: Billboard/ signage illumination

© Xicato Inc. Application Note: Asymmetric XLM 04/9/13 3

Luminaire 0.5m away from wall Illuminance: Max: 7662 Lux Max/Min: 250.8 Avg/Min: 23.1

Luminaire 1m away from wall Illuminance: Max.: 1942.2 Lux Max/Min: 18.5 Avg/Min: 5.8

Luminaire 1.5m away from wall Illuminance: Max.: 878.4 Lux Max/Min: 6.29 Avg/Min: 3.5

Fig. 7: Illuminance plots for a 3000lm XLM on a 3m x 3m wall with reflectors mounted at different distances from the wall. The asymmetric reflector is designed to be mounted 1.5m away from the wall

for uniform illumination.

Fig. 8: Candela distribution polar plot with the module mounted at 30º from base surface. Source files are available on Radiant Imaging library

0º 10º 20º 30º

40º

50º

60º

70º

80º

0 - 180 90 - 270

90º

© Xicato Inc. Application Note: Asymmetric XLM 04/9/13 4