The third is that when ultraviolet rays transmiting on the way of encountering two different media interfaces.
Part of ultraviolet rays is to reflect and the other is to refract.
The influence of ultraviolet rays transmiting way is mainly to reflect in the optical secondary design of the product.
Under the guidance of the doctor of optics, we will simulate the design based on the selection of optical accessories.
Such as light cups and lenses, to realize high-quality and purposeful redesign of the lamp bead light source.

https://www.tank007.com/product-category/uv-flashlight/

• Link