Working principle of surface mount diode color sensor

What is the function of a color sensitive sensor inside a surface mount diode? If it is missing, can the work continue to function normally.

The working principle of the patch diode color sensor is that different regions in the patch diode have different sensitivities to different wavelengths. In specific applications, the color sensitive device should be calibrated first.

Measure the ratio of short-circuit current between two photodiodes in the device under different wavelengths of light irradiation, ISD2/ISD1. ISD1 is the short-circuit current of shallow junction diodes, which is larger in the short wave region, while ISD2 is the short-circuit current of deep junction diodes,

It is larger in the long wave region.

During the operation, take careful notes and determine the relationship between the ratio of the two and the wavelength of the incident monochromatic light.

Based on the calibrated curve, the short-circuit current ratio of a certain monochromatic light can be measured to determine its wavelength.

The basic characteristics of surface mount diode color sensitive sensors include spectral characteristics, short-circuit current ratio wavelength characteristics, and temperature characteristics.

The above is an introduction to the working principle of surface mount diode color sensitive sensors. We hope it can provide some help in practical applications!