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High Precision Dichroic Colour Filters: Applications

  • Colour
Colour

Filters are used to produce light of a certain colour by selection of the appropriate region of the visible spectrum (380-780nm). Dichroic Colour Filters are commonly used for lighting applications in thousands of Industrial, Scientific and Entertainment environments. In addition they may be used to modify the colour temperature of a light source.

The ability to create or control the colour of a light source very accurately is proving essential for a growing number of more demanding applications such as Biotechnology, Signal Lighting and Medical. Consequently the filters must be shift free and environmentally stable under harsh conditions.

Typically the filter types are Longpass, Shortpass or Bandpass in design and may be used with Broadband sources such as halogen or Xenon bulbs or narrowband sources such as LED’s.

All of these Filters are hard, durable and environmentally stable and can therefore be produced in a variety of shapes and sizes. This final sizing step is carried out at Envin where finished filters are produced from 1mm square to >100mm diameter. Thickness can be as low as 0.2mm and special considerations such as flatness and parallelism are routinely catered for.

Detailed Optical performance measurements are made using the highest standard Spectrophotometers (Perkin Elmer Lambda 900 & 983G).

Envin is able to offer a complete service from Coating and Filter design to prototyping and full manufacture covering the Ultraviolet, Visible and Infrared regions. Custom products are a speciality of the company.

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Latest News

  • Oxygen sensors and analysers – when do you need them?

    28th January 2021
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    21st December 2020

Contact Information

Envin Scientific Limited,
Technology House,
Chowley Oak, Tattenhall
Chester, Cheshire
CH3 9GA

Tel: +44 (0)1829 771792
Fax: +44 (0)1829 771791

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