Optical Control Factor

Cree Directional and High-Density LEDs deliver the industry’s highest optical control factor (OCF).

What does optical control mean for directional lighting applications?

LEDs with better optical control enable you to more-effectively utilize the lumens in your LEDs.

Concentrate your lumens

on a target

down a path

Spread your lumens

on a target

along the road

What is OCF?

Optical control factor (OCF) provides a way to quantify the optical control of an LED or an array of LEDs. OCF is a measurement of how LED size and performance benefit directional lighting applications.

Optical Control Factor = Lumens/Scaled Area (mm2) = Performance/Size

Integrated Arrays

Scaled area = LES area

Discrete LEDs

Scaled area = package area + 0.5 mm pitch*

* takes into account the spacing needed between LEDs when put into an array

Why is OFC important?

High-OCF LEDs enable lighting manufacturers to improve the performance of any lighting design, create smaller and less expensive systems, and develop new lighting solutions that were previously not possible.

Industry's highest lumen density LEDs

Cree Directional and High-Density LEDs deliver the industry’s highest optical control factor (OCF).

Directional LEDs

Optimized for:

  • optical control
  • lumen and LPW flexibility
  • automated assembly
High-Density
Discrete LEDs
XQ-E XP-G3 XP-L XHP35 XHP50 XHP70
Size (mm x mm) 1.60 3.45 3.45 3.45 5.00 7.00
Maximum light output up to 334 lm
@ 3 W
up to 777 lm
@ 6 W
up to 1226 lm
@ 10 W
up to 1833 lm
@ 13 W
up to 2546 lm
@ 19 W
up to 4022 lm
@ 32 W

 

High-Density LED Arrays

Optimized for:

  • optical control
  • specific lumen-range targets
  • manual assembly
CXA2
LED Arrays
CXB1310
(18 V)
CXB1310
(36 V)
CXB1520
LES (mm) 6.00 9.00
Lumen range(lm) 800 – 3600 1160 – 6400
Typical Vf (V) @ 85°C  16.5 33 33
Current range (mA) 700 – 1400 350 – 700 500 – 1400
Maximum power (W) 24 49