The light-emitting angle of Jinan light-emitting words, that is, the angle of light scattering, is mainly controlled by adding scatterers in the production process of diodes. There are three types:
1. High directivity
It is usually a non scatterer epoxy package or metal reflective cavity package. The luminescence angle is 5 ~ 20 or less, which has high directivity. It can be used as a local light source or combined with photodetectors to form an automatic detection system.
2. Types of standards
It is usually used as indicator light, and its luminous angle is 20 ~ 45 degrees.
3. Scattering type
This is an indicator light with a larger viewing angle. When the luminous angle is 4590 degrees or more, the amount of scatterer is larger.