What is the luminous intensity and angle of the LED light string?
Candela is the basic unit of luminous intensity. Candela is one of the basic units of the International System of Units. Generally, different colors of LED lights have different luminous intensities. The commonly used unit is mcd, or millicandela. The higher the value, the greater the luminous intensity, that is, the brighter. This is an important indicator for evaluating the brightness of LED strips. The higher the brightness requirement, the more expensive the light strip. This is because high-brightness LED chips are expensive. And the higher the brightness, the more difficult the packaging.
The light-emitting angle refers to the light-emitting angle of the LED elements on the LED string. The general-purpose SMD LED, that is, the light-emitting angle of SMD components is 120 degrees. The larger the light-emitting angle, the better the astigmatism effect. But relatively, the brightness of its light is reduced accordingly. The light-emitting angle is small, the intensity of the light is up, but the range of illumination will be reduced. Therefore, another important indicator for evaluating LED strips is the light-emitting angle. There are some bad manufacturers on the market, in order to increase the brightness of the light in order to earn higher profits. Deliberately reduce the light-emitting angle, a little careless, you will buy such shoddy components.
The input voltage of the led light string is generally DC 12V, and some are 24V.