Precision Optics

Introduce

Windows

Lenses

Prisms

Waveplates

Beamsplitters

Filters

  Birefringent Filter

  Laser Line Interference Filter

  Individual Neutral Density Filter

  Bandpass Filter

Laser Optics

Coloured Optical Glass

IR Materials

Coating

Custom Optics

Short Wave Pass Filter

Often referred to as long wave pass (LWP) and short wave pass (SWP) filters, these sharp-cut edge filters are distinguished by their high rate of transition between their region of reflection and transmission. This high rate of transition makes them an excellent choice as emission filters in fluorescence applications, and as order sorting filters in photometry. They are also very useful as stray light or trim filters, to eliminate any unwanted near band radiation. All LWP/SWP filters are constructed of hard, durable first-surface dielectric coatings, and will withstand the normal cleaning and handling associated with any high-quality optical component. Their film construction is essentially a modified quarter-wave stack, using interference effects rather than absorption to isolate their spectral bands. Unlike filter glass, which is not sensitive to wavelength shift with angle, these filters will shift shorter in wavelength with an increase in their angle of incidence. This feature can be useful in applications where it may be desirable to fine tune the 50% cut-on, or cut-off wavelength.

General Specifications
Size Tolerance: +0.0, - 0.2mm
Thickness: 2.0mm to 8.0mm
Minimum Clear Aperture: 90% of O.D.
Substrate Material: Glass
Flatness: 2¦Ë per 25mm
Parallelism: 3 arc minutes
Surface Quality: 80/50
Cut-on and cut-off slopes: 6%
Cut-on and cut-off tolerance: ¡À10nm
Cut on , Cut off : Wavelength of 50% Peak transmission
Blocking :
Short wave pass : 1.2¦Ë c to 1200nm
Block Optical Density : Typically 0.1% , O.D 3
VISIBLE AND NEAR INFRARED SHORT WAVE PASS FILTERS
Cut-on (¦Ëc) (nm)
T range (nm)
Tave%
¦µ2.5mm
¦µ?5.4mm
¦µ50.0mm
Part No.
Part No.
Part No.
450
415-440
80%
SF1045
SF2045
SF3045
500
415-490
80%
SF1050
SF2050
SF3050
550
415-540
80%
SF1055
SF2055
SF3055
600
415-590
80%
SF1060
SF2060
SF3060
650
415-640
80%
SF1065
SF2065
SF3065
700
440-685
80%
SF1070
SF2070
SF3070
750
475-735
80%
SF1075
SF2075
SF3075
800
475-785
80%
SF1080
SF2080
SF3080
850
475-835
80%
SF1085
SF2085
SF3085
900
475-880
80%
SF1090
SF2090
SF3090
950
475-930
80%
SF1095
SF2095
SF3095
1000
475-980
80%
SF1100
SF2100
SF3100
Please refer to the Glossary and Technology for more information about waveplates.
Other sizes and coatings are available upon request.

Home | Company Profile | Lasers | Optics | Crystals | Support | Contact
Copyright © 2002-2008 by Shanghai Dream Lasers Technology Co., Ltd.