Infra Red Linear Variable Filters from Vortex Optical Coatings

26 Jan 2017

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 maner.

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 three stock LVF filters, they cover the following ranges:

(i) 2.5 - 5.0 µm.

(ii) 1.2 - 2.5 µm.

(iii) 0.9 - 1.70 µm.

We have the capability to manufacture custom LVF'swithin this range to suit your needs and welcome the opportunity to discuss specific applications in confidence.

• Stock filters 15 mm long x 3.5 mm wide and 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
• Width of filters at 50% peak T (FWHM) = 2% of peak wavelengt
• Surface Quality better than 60-40 scratch dig
• Blocking - Our LVF's have a blocking of OD3 within the range, however, a supplementary filter in the optical chain may be required. We can advise on this based on the detectior's sensitivity ran

Contact us today for a fast response by sending your enquiry to ian@vortexopticalcoatings.co.uk or call Ian Reilly on (+44) (0)1455 613029 to discuss your needs further.

You can download the Infra Red Linear Variable Filters datasheet here.

Or visit us at Photonics West Booth 3012