SparkFun Forums

[emalper]

Hi guys i want to build an exprosure box for pcb and i am planing to use a 365nm led with 120 wieving angle and the brightness is not on the website so i dont know about it but can you guys tell me please how can i calculate the led light on the surface. Like how many centimeters between leds or how many centimetrs should i put between the leds and the glass/surface?

p.s sorry about my english. it is not my natuve language

[Valen]

What led? What website is it from? What datasheet does it have? What current flows through it? What is the intensity/brightness vs. current curve? What is the beam patern curve? How foggy is it inside the exposure box? (milky transparent surface?)

Answer: 'trial and error' based on how much information you have given.