Infrared (IR) Coatings
Covert, Semi-Covert & Blackeye
Typically used with infra-red cameras, scopes, and night vision goggles for surveillance, these filters enable infrared energy to be emitted from a variety of light sources while blocking visible energy, avoiding detection by the unaided eye.
Specifications
Covert Filter
This covert filter design blocks energy with wavelengths shorter than 825nm.
Semi-Covert Filter
This semi-covert filter design transmits more of the near infrared energy. These filters are used with imaging systems requiring greater sensitivity to wavelengths 800-900nm.
Blackeye Filter
This unique filter consists of a two piece optically coated substrate designed to block the visible output of a light source from as close as 3 feet. Transmittance is ≤1.0% average from 400 to 890 nm and ≥65% average from 950 to 2500nm. Reflectance is ≤5.0% average from 400 to 700 nm. It is ideally suited for use with night vision equipment or CCD cameras for short or long range surveillance applications.
MWIR-BBAR 3-5 Microns
This Mid Wave Infrared (MWIR) AR coating provides a low level of reflectance for the mid-infrared spectrum (3000nm to 5000nm). Band averaged reflectance is less than 1.0% at normal incidence.
LWIR-BBAR 8-12 Microns
This Long Wave Infrared (LWIR) AR coating provides a low level of reflectance for the far-infrared spectrum (8µm to 12µm). Band averaged reflectance is less than 1.0% at normal incidence.