OptoLED light source - CAIRN RESEARCH - #2

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RESEARCH OptoLED Light source Near perfect stability Full Spécification Typical optical power at spécimen >15mW at 470nm Fluorescence LED heads available at 365nm, 385nm, 405nm, 440nm, 455nm, 470nm, 505nm, 525nm, 550nm, 590nm, 617nm, 627nm and white with multi-element LED heads for transmitted light Single,dual, triple and quad couplings available for Nikon, Olympus, Leica, and Zeiss microscopes TTL controlled switching and voltage controlled intensity modulation accessed via BNC connections Maximum output current 1A 2A or 5A, selectable by internai jumper links Optical switching times <100nsec Response time to change external analogue input <10usec Response time of optical feedback circuit <10usec External analogue control voltage range 0 to+lOV Summary The Cairn OptoLED is capable of driving two LEDs independently, over a wide range of currents. For pulsed illumination, switching times of less than 100 nanoseconds are achievable, and digital control inputs to support this mode of opération are provided. The standard operating current range, which is set either by a front panel control or by an external control voltage, is 0-5 amps (A). In addition, digital inputs are provided to switch each LED on and off independently, with rise and fall times of less than 100 nanoseconds. Each channel has a meter, which can be switched to display either current (in amps) or power (in watts). The Cairn OptoLED also cornes with an optical feedback function because although in the short term the light output from an LED tends to be more stable than that from other sources, it is somewhat température dépendent. During pulsed opération with duty cycles of more than a few milliseconds, the conséquent variation in LED température through the cycle can cause the light output to change during the puise. For those researchers who wish to control the OptoLED completely via software, we have created slightly cheaper version lacking front panel controls although it can still be fitted with a remote slider unit to manually adjust the intensity. Dimensions Depth Width Height Power supply 280 304 65 Remote control slider unit 87 144 35 LED head 46 46 73 sal e sf-Vcai rn-resa arch.cD. uk tech 3'ca i rn-resea rch. cg .uk +44 (D) 179559014Q