SANTA ROSA, Calif., 6 March 2010. Deposition Sciences, Inc. (DSI) released long wavelength infrared (LWIR) bandpass filters with a temperature range between ambient and 10 degrees K. The devices are for use in imaging sensor filters, order-sorting filters, thermal and/or night vision tasks, and forward looking infrared optics.

The thin film coatings are manufactured via DSI's physical vapor deposition with the ion-assist process, making them highly durable and robust and feature extremely precise band edge placement for critical sensing applications.

A variety of substrates, such as germanium, silicon, zinc sulfide, zinc selenide, quartz, sapphire, and polymers are available for these longwave infrared filters, depending on the user's wavelength requirements. Multispectral filters can also be provided when multiple filters are needed on a singe substrate.

Various sizes, from a few millimeters to more than 2 inches diameter can be provided. Cryogenic operating temperature transmittance measurements, down to 10K, can be made in-house and customized to filter specifications. Out-of-band transmittance can be designed to OD 6 or greater and measured to OD4 from 2,000 nm to 50,000 nm, and to OD 5 from 500 nm to 2,000 nm.

For more information, visit www.depsci.com.