Coloured LEDs for DLP projectors

Osram is aiming at projectors based on DLP technology with a set of four high-brightness coloured LEDs.

With the base part number LE xx P1MS/AS (see table below for details), there are blue, amber, deep blue and green options. Each has a 6.8 x 7.6mm footprint.

“The LEDs have a very close etendue match with the 0.33inch DLP imager,” according to the company. “When used in a typical four-channel configuration, these LEDs produce an output of 880 lm on projector level.”

The package includes a copper metal-core PCB and has an isolated solder pad to remove the need for external isolation.

Thermal conductivity is high enough to allow 4.5A/mm² current density in the amber version and 6.6A/mm² in the others.

“In multi-channel configurations, the LEDs support serial connection with a low forward current, enabling the use of a simpler LED driver,” said Osram.

Electronics Weekly has requested further technical information.

As well as home theater projectors, use if foreseen in endoscopes, 3D scanners and machine vision.