Optical equipment components manufacturer, Lens, Prism, Polarizing plate, Mirror, ZnSe, IR filter, Thin film coating
HROIC FILTER : SHORT WAVE PASS (SWP) & LONG WAVE PASS (LWP)
Dichroic Filter coatings are designed to transmit one spectral region (passband) and reflect another (rejection band). The filter is a Short Wave Pass if the passband is to the left of the transition slope, and a Long Wave Pass if the passband is to the right of the slope.
The advantages of dichroic filters over colored glass filters arc: 1) the rejection band is reflected rether than absorbed; 2) steeper transition slope between the passband and the rejection band; i.e. sharper cut-on or cut-off; 3) coatings can be custom designed for specific center wavelengths.
TO ORDER : The codes listed above are for ordering coating service for customer supplied substrates only
Ex: 1) SWP; 350nm; 0。: SWP 035 0 2) LWP; 400nm; 45。; unpol.: LWP 040 4 U
These and other coatings are available from stock on a variety of substrates. Other wavelengths and angles of incidence can be provided upon request. Please contact our sales department for assistance.
