OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.

Issue B.2 01/07

Page 7 of 10

OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006

Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 visibleLED@optekinc.com www.optekinc.com

CIE Chromaticity Diagram

Normalized Spectral Intensity vs Angular Displacement

137.7 degrees

Spatial Intensity Distribution

1-Watt Cup Series

OVTL01LGA Series

1.0

.8

.6

.4

.2

0

-.2

-.4

-.6

-.8

-1.0