DICHROIC FILTER : SHORT WAVE PASS (SWP) & LONG WAVE PASS (LWP)

Dichroic Filter coatings are designed to transmit one spectral region (passband) and reflectanother (refection 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 are: 1) the rejection band is reflected rather 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 of customer supplied substrates only.
Ex: 1) SWP; 550 nm: 0。: SWP 055 0 2) LWP; 950 nm; 45。; unpol.: SWP 095 4

These and other coatings are available from stock on a variety of substrates. of substrates. Other wavelengths and angles of incidence can be provided upon request. Please contact out sales department for assistance.