Precision Longpass Filter

Example 1 Precision Longpass Filter with Physical Dimension Feature Control.

Customer requirements:-

Filter with two Precision Longpass Filters at different wavelengths (+/-3nm) deposited sequentially on the same Substrate. The transition between the coatings to <50 microns. High transmission required (no AR on second surface).

Result:-

Transmission >90% average. Transition Zone <30 microns. High Durability, Low Shift coatings.