Vortex Optical Coatings

+44 (0)1455 613029 http://www.vortexopticalcoatings.co.uk

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Infra Red Linear Variable Filters

A Linear Variable Filter (LVF) is a single filter where the performance profile shifts gradually from one end of the filter to the other in a continuous manner, this is illustrated below for one covering the 2.5-5.0 µm range.

Vortex Optical Coatings Infra Red Linear Variable Filters

The combination of an LVF and suitable detector can replace a large number of components thus saving vast amounts in space, cost, weight and time. Vortex manufactures two stock filters for use in the infrared, one covering a range from 1.2 to 2.5 µm, a further one covers the range from 2.5 to 5 µm. We have the capability to manufacture for a wide range of detector windows and bands within this range to suit your needs and welcome the opportunity to discuss specific applications in confidence.

Vortex Optical Coatings Infra Red Linear Variable FiltersVortex Optical Coatings Infra Red Linear Variable Filters

Properties of Vortex LVF’s

  • Stock filters of 15 mm long x 3 mm wide, the 1.2 to 2.5 µm is 1mm thick, the 
    2.5 to 5 µm version is 0.5 mm thick (tolerance= /- 0.1 mm)
  • Durable hard coatings passing Humidity, salt solution, severe abrasion, adhesion as per MIL C 48497
  • T peak, typically >60% across the band
  • Surface Quality better than 60-40 scratch dig
  • Blocking UV to 8 microns, if extended blocking is required we stock a supplementary band-pass filter to enable blocking at OD3 to extend from UV to 50 µm

Download the datasheet using the link below.

Applications

LVF’s can be used in hand held spectrophotometers, multi gas detectors and any other application where a range of IR band-pass filters can be replaced with a single one.

Pricing

2.5 to 5 µm type

Product Code LVF 2.5_5.0_3_15_0.5

What the code means:

LVF (lower wavelength µm) _ (higher wavelength µm) _width in mm_length (mm) _thickness (mm)

All prices are in GB Pounds and are per unit.

  • 5 or less ——— £346.50 each
  • 10 off ——— £313.50 each
  • 50 off ——— £297.00 each
  • 100off ——— £208.00 each
  • 500 off ——— £183.00 each
  • 1000 off ——— £149.00 each
  • 5000 off ——— £88.00 each

Please Note that for OEM/high quantity pricing, please contact us direct by telephone 44 1455 613029 or e mail Ian Reilly on ian@vortexopticalcoatings.co.uk.

1.2 to 2.5 µm type

Product Code LVF 1.2_2.5_3_15_1.0

What the code means:

LVF (lower wavelength µm) _ (higher wavelength µm) _width in mm_length (mm) _thickness (mm)

All prices are in GB Pounds and are per unit.

  • 5 or less ——— £312.00 each
  • 10 off ——— £282.00 each
  • 50 off ——— £267.00 each
  • 100off ——— £208.00 each
  • 500 off ——— £183.00 each
  • 1000 off ——— £149.00 each
  • 5000 off ——— £88.00 each

Please Note that for OEM/high quantity pricing, please contact us direct by telephone 44 1455 613029 or e mail Ian Reilly on ian@vortexopticalcoatings.co.uk.