walid Posted March 12, 2012 Report Share Posted March 12, 2012 How do measure the Brightest White LED and see if it is damaged or not?thanksNote: I have tried to test in the same way as the normal LED, but did not give me any reading from both sides Quote Link to comment Share on other sites More sharing options...
Hero999 Posted March 12, 2012 Report Share Posted March 12, 2012 Brightness is only half the story: colour rendering index and beam angle are also important. Quote Link to comment Share on other sites More sharing options...
audioguru Posted March 13, 2012 Report Share Posted March 13, 2012 Many cheap "bright" LEDs are for sale but they are simply a dim one in a case that focusses the light into a very narrow but bright beam.Good LEDs have the same brightness or more and have a wide beam angle. Quote Link to comment Share on other sites More sharing options...
Will D Posted March 15, 2012 Report Share Posted March 15, 2012 Hi,The most accurate indicators of the brightness of LED bulbs are the measured lumens or lux. Lumens measure the total amount of light output from a bulb. Lux measures how bright the light is on a surface at a specified distance. Quote Link to comment Share on other sites More sharing options...
audioguru Posted March 15, 2012 Report Share Posted March 15, 2012 My cheap solar garden lights are EXTREMELY bright at night if you look at them.But they are not bright enough to light up anything nearby. Quote Link to comment Share on other sites More sharing options...
plouf Posted March 17, 2012 Report Share Posted March 17, 2012 but its interesting on how do you actually can measure a LED light, if there is any more or less easy method with more or less accurancy Quote Link to comment Share on other sites More sharing options...
walid Posted March 18, 2012 Author Report Share Posted March 18, 2012 In fact, no one understand my question. I do not ask about the intensity of light, my question was about how to examine it. And to know whether is good or bad? Thanks Quote Link to comment Share on other sites More sharing options...
Hero999 Posted March 19, 2012 Report Share Posted March 19, 2012 A light meter can be used to measure intensity.A spectrum analyser can measure the power at different wavelengths. Quote Link to comment Share on other sites More sharing options...
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