Infrared Filters

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Optolite IR. Acrylic Infrared pass Filters

Optolite IR (infrared) broad band acrylic infrared pass filters have been specially formulated to transmit infrared radiation at wavelengths greater than approximately 750nm and are thereby virtually opaque to visible light.

Our Infrared filters are eminently suitable for use in photometric systems which are triggered by near infrared signals but which must operate in environments with high levels of visible radiation. Optolite IR infrared filters eliminates the visible spectrum and so improves the effectiveness of the system by increasing the signal-to-noise ratio

Specific applications include remote controls, security systems, presence sensing devices, proximity sensors and scanners.

Optolite IR Transmission Characteristics

Features include:

  • Excellent Transmittance up to a maximum of approximately 90% in the infrared region from 850nm – 2000nm, 50% transmission at 780nm and effectively 0% below 740nm in the visible spectrum.
  • Cast-in Non-Glare Finish available as an option to cut down any unwanted front surface reflections.
  • Filters supplied to Customer Drawings in standard thicknesses of 0.5, 1.0, 1.5, 2.0, 3.0mm. Other, non-standard thicknesses and tight tolerances can be supplied to order.
  • Due to its unique properties Acrylic can be machined to size if required by CNC machine or can be etched / cut by a laser cutter .  Instrument plastics has an in house machining department with a large array of Laser cutters and CNC routers.

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