Is there any difference in the light emitted from an LED and light emitted from a light bulb?
In: Physics
In general yes. But there is not just one type of LED. In general an LED emits one frequency of light depending on the exact crystal used in its manufacturing. It is quite common to combine three different types of LEDs, Red, Green and Blue to simulate any color. However as the color is really just a combination of three frequencies of light instead of all frequencies of light that a light bulb or the sun will give you it will not look the same. It works fine for screens but for lighting a room where most of the light is reflected off different surfaces it can look really bad. For example an orange would look very red as it does not reflect the specific frequencies of green and blue.
But there is a way around this issue. You can have fluorecent LEDs. These have an ultraviolet LED light source covered in a material that converts that ultraviolet light into broad spectrum white light. These again come in two different variations, cold and warm white. They have a slightly different peak color output but are both broad spectrum. By combining these two types you can change the “color” of the light to match the desired temperature of the room. You are not able to match the exact color output from a traditional light bulb but you can get it close enough that your eyes are unable to tell the difference.
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