HD Wide-angle Central Telescope High Power Low Light Level Night Vision
This model uses a high refractive index bak4 prism,
which plays a very important role in the optical structure.
The quality of the edge determines the effect of imaging and the comfort of viewing.
The general prism materials are bk7 and bak4.
Bak4 is a material with a higher refractive index than bak7.
It can effectively avoid vignetting and restore color
to a real scene.
49 in stock