The LED provides a semi-wide monochromatic light. Since the energy gap of the semiconductor decreases with the increase of temperature, the peak wavelength emitted by it increases with the increase of temperature, IE, the spectral Redshift, and the temperature coefficient is +2 ~ 3A /. The LED luminous brightness L is approximately proportional to the forward current: K is the proportional coefficient. The current increases and the brightness of light emission also increases approximately. In addition, the luminous brightness is also related to the ambient temperature. When the ambient temperature is high, the compound efficiency decreases and the luminous intensity decreases
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