Introduction to different types of light source of photoelectric switch

Infrared light sources in different types of optical switches 1. Introduction: This is not understood by many customers. Photoelectric switch The abbreviation of photoelectric proximity switch, which uses the shielding or reflection of the light beam by the detected object, and the circuit is connected by the synchronization loop to detect the presence or absence of the object. Objects are not limited to metals, all objects that can reflect light (or block light) can be detected. Infrared light has strong advantages and good anti-interference. The disadvantage is that the light spot during debugging is invisible and it is too troublesome. The divergence angle of the light is relatively large, that is, a larger spot size. (The difference in the reflection of many measured objects, when the interference line of external or ambient light is large, the infrared light sensor is suitable for LED white light source: the light source is usually used for this kind of color sensor, and the light source is multiple dedicated.