Astronomy Services

L & L Optical Services offers the highest quality thin film coatings available, providing the Astronomical Telescope community with three aluminum coatings for your primary and secondary mirrors.

Over thirty years of experience in designing and developing coating processes for a wide range of applications enable us to meet and exceed our clients’ expectations.




All Dielectric coating made to last the lifetime of your secondary.
This coating has an average reflection of 98% from 420nm to 650nm.
The coating meets all specifications of Mil-C-675C.