LED LIGHT SOURCE
Mar 2006Cairn Research Ltd.Request Info
The OptoLED from Cairn Research Ltd. is an LED light source whose power supply can drive two LEDs independently at currents of up to 10 A. The drive current for each can be set by a front panel control or by an external control voltage. If the control voltage is modulated, the corresponding LED’s output can be changed within a few microseconds, and submicrosecond modulation can be achieved using digital control inputs. Independent digital inputs are provided for each LED and can be configured with opposite polarity so that a single control pulse can rapidly switch between two LEDs. The LEDs are mounted in compact remote modules that include a photodiode control board for optical feedback and have a built-in aspheric condenser lens with a focusing ring. Instruments are available with wavelengths across the visible and down into the near-UV.