Field of illumination of LED rings

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jiazhangwang
 
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Field of illumination of LED rings

Post by jiazhangwang »

Hi, we have ordered some NeoPixel Rings 12/16/24*5050 RGB. For our project, we need to know the field of illumination. Appreciate for any help.

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adafruit_support_bill
 
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Re: Field of illumination of LED rings

Post by adafruit_support_bill »

The LEDs approximate a Lambertian emitter. That means that the intensity if proportional to the cosine of the angle from the central axis of the LED. In other words, if the intensity directly in front of the LED is 100%, it will be about 70% at 45 degrees off axis and decrease to 0% at 90 degrees.

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