1. Does LED emits light linearly, or randomly? 2. If you use UV LED to sterilize,...

1. Does LED emits light linearly, or randomly?

2. If you use UV LED to sterilize, does LED light irradiatiated regualrly to the sterilizing object, or irregularly? (LED light is incoherent, so it emits light irregularly, right?)

Expert Solution

1. LED (Light Emitting Diode) emits light linearly.

LED emits light when current flows through it. LEDs are directional light sources. This means that they emit light in a specific direction linearly. In this way the LEDs are able to use light and energy more efficiently in several applications. LEDs convert electrical energy directly into light and delivers efficient light generation with little-waste in electricity. The energy released is in the form of photons. This kind of effected is called as electroluminescence.

Other light sources such as incandescent and CFL, which emit light and heat in all directions.

2. Most low-cost LEDs have a common irregularity in their radiation pattern when the light is emitted. The sterilizing object is constructed with reflective materials. This is done to maximize the irradiation rate of the UV light. Due to some irregularity in reflective surfaces of sterlizing object, the UV LED light is irradiated irregularly.

genius_generous answered 2 years ago

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