SURPLUS - EDGE FILTERS

UV - VIS - NIR

Andover maintains a stock of high-quality surplus edge filters. These are primarily overruns of custom production lots, and exhibit the same high level of quality as all of our other products. Consequently, this can be a very economical alternative to purchasing a custom bandpass filter. All of these bandpass filters are provided with spectral data scans with exact measurements.

You can also search our entire product line, both surplus and standard, by going to the search page and entering the appropriate criteria. And if there is something you need that you don't see listed, please contact our sales department for a custom quote. 

While we make every effort to keep the quantities updated, please note that all of these bandpass filters are subject to prior sale.

BENEFITS 
  • Low cost
  • Useful for redirecting a particular band of light
  • Provide steeper transition tan color glass filters
  • Offer coverage over the 300 - 1000nm range

COMMON APPLICATIONS

  • Fluorescence
  • Photometry
  • Color enhancement and combining

Please note: Many of these parts are in plate form, 208.28mm (8.2") dia. The useable aperture is slightly smaller. These parts are machineable to other sizes. 

DESCRIPTION
PART NO.
Price
QTY In Stock
Buy
325nm Steep-Edge Long Pass Filter, 25mm dia.
330.0 / STEEP LWP - 62345-B
$85.00
13
50% Cut-on Wavelength330.0+2.0/-2.0 nm
Filter TypeSTEEP LWP
Transmission91%
Blocking1x10-4 avg.
Flatness/4 per inch or better
Parallelism1 minute or better
Size+0.0/-0.2mm
Thickness1.5 +0.25/-0.25 mm

Estimated Delivery: 2-3 Days
Sharp Slope LWP 350.0nm/LWP/25.0mm dia.
339.0 / STEEP LWP - 61016
$85.00
10
50% Cut-on Wavelength339.0+3.0/-3.0 nm
Filter TypeSTEEP LWP
Transmission91% avg. to 1650nm
Blocking1x10-4 avg.
Flatness/4 per inch or better
Parallelism1 minute or better
Size+0.0/-0.2mm
Thickness1.5 +0.25/-0.25 mm

Estimated Delivery: 2-3 Days
Sharp Slope LWP 350.0nm/LWP/25.0mm dia.
348.0 / STEEP LWP - 51885-D
$85.00
6
50% Cut-on Wavelength348.0+4.0/-4.0 nm
Filter TypeSTEEP LWP
Transmission91% to 1000nm
Blocking1x10-4 avg.
Flatness/4 per inch or better
Parallelism1 minute or better
Size+0.0/-0.2mm
Thickness1.5 +0.25/-0.25 mm

Estimated Delivery: 2-3 Days
Sharp Slope LWP 438.0nm
438.0 / STEEP LWP - 56450
$92.00
19
50% Cut-on Wavelength438.0+4.0/-4.0 nm
Filter TypeSTEEP LWP
Transmission95%
Blocking1x10-4 avg 300nm to cut on
Flatness/4 per inch or better
Parallelism1 minute or better
Size+0/-0.2mm
Thickness1.50 +0.25/-0.25 mm

Estimated Delivery: 2-3 Days
450nm Steep-Edge Long Pass Filter, 25mm dia.
440.0 / STEEP LWP - 64778
$92.00
57
50% Cut-on Wavelength440.0+4.5/-4.5 nm
Filter TypeLWP
Transmission91%
Blocking1x10-4 avg.
Flatness/4 per inch or better
Parallelism1 minute or better
Size+0.0/-0.2mm
Thickness1.5 +0.25/-0.25 mm

Estimated Delivery: 2-3 Days
Sharp Slope LWP 483.0nm
483.0 / STEEP LWP - 56445
$92.00
19
50% Cut-on Wavelength483.0+4.0/-4.0 nm
Filter TypeSTEEP LWP
Transmission95%
Blocking1x10-4 avg.
Flatness/4 per inch or better
Parallelism1 minute or better
Size+0/-0.2mm
Thickness1.50 +0.25/-0.25 mm

Estimated Delivery: 2-3 Days
Sharp Slope LWP 490.0nm
490.0 / STEEP LWP - 56444
$92.00
35
50% Cut-on Wavelength490.0+5.0/-5.0 nm
Filter TypeSTEEP LWP
Transmission95%
Blocking1x10-4 avg.
Flatness/4 per inch or better
Parallelism1 minute or better
Size+0/-0.2mm
Thickness1.50 +0.25/-0.25 mm

Estimated Delivery: 2-3 Days
700nm Steep-Edge Long Pass Filter, 25mm dia.
688.0 / STEEP LWP - 64780
$92.00
19
50% Cut-on Wavelength688.0+7.0/-7.0 nm
Filter TypeLWP
Transmission91%
Blocking1x10-4 avg.
Flatness/4 per inch or better
Parallelism1 minute or better
Size+0.0/-0.2mm
Thickness1.5 +0.25/-0.25 mm

Estimated Delivery: 2-3 Days
Custom Borofloat window 90 x 75 mm / 3.3mm thick
835.0 / SWP - 66949-C
$160.00
60
50% Cut-on Wavelength835.0+nom/-nom nm
Filter TypeSWP
Transmission90%(avg) 730-820nm
BlockingOD 2.7 avg from 850-1600nm
FlatnessCommercial
ParallelismCommercial
Size+0.0/-0.2mm
Thickness3.3 +nom/-nom mm

Estimated Delivery: 2-3 Days
Long Pass Filters 3600nm/LWP/25mm dia.
3750 / LWP - 64854-B
$207.00
7
50% Cut-on Wavelength3750+50/-50 nm
Filter TypeLWP
Transmission85%
Blocking
Flatness5 or better at of Interest
Parallelism< 10 arc minutes
Size+0/-0.1mm
Thickness1.0 +0.2/-0.2 mm

Estimated Delivery: 2-3 Days