Short pass filters are used to transmit wavelengths shorter than the cut-off wavelength of the filter.
Short pass filters are commonly use in life science applications including fluorescence microscopy or for integration into a variety of instrumentation.
These optical filters can also be used as hot mirrors to minimize unwanted heat caused by infrared radiation.
DELN offers a variety of short pass filters with high blocking and maximized transmission.
Specifications
Material
Float glass, B270, BK7, Fused Silica or other
Dimension Tolerance
+0.0/-0.1mm
Thickness Tolerance
±0.2mm
Surface Quality
60/40 or better
Clear Aperture
>90%
Coating
Hard Dielectric Sputtered
Angle of Incidence
0°
Pass Band Transmission
>85% (According to customer's specifications)
Rejection Band Blocking
OD4(According to customer's specifications)
Cut-On Wavelength (+/-1%)
Rejection Band (nm)
Transmission Band (nm)
400 nm
420-1100
350-390
450 nm
470-1100
350-430
500 nm
520-1100
350-480
550 nm
570-1100
400-530
600 nm
620-1100
400-580
650 nm
670-1100
400-630
700 nm
720-1100
400-680
750 nm
770-1100
400-730
800 nm
820-1100
400-780
900 nm
910-1200
400-880
Other Cut-On Wavelength and specificationsare available upon request.
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