LWIR Bandpass Filters
Mar 2010Deposition Sciences Inc. (DSI)Request Info
SANTA ROSA, Calif., March 12, 2010 – Deposition Sciences Inc. provides long- wavelength infrared (LWIR) bandpass filters that operate at temperatures between ambient and 10 K. The thin-film coatings are manufactured via proprietary physical vapor deposition with the ion-assist process, making them durable and robust.
They feature precise band edge placement for critical sensing applications. The filters are suitable for use in imaging sensor filters, order-sorting filters, thermal and/or night vision tasks, and forward-looking infrared optics. Substrates including germanium, silicon, zinc sulfide, zinc selenide, quartz, sapphire and polymers are available, depending upon the customer’s wavelength requirements.
Multispectral filters can be provided when multiple filters are needed on a singe substrate. Sizes from a few millimeters to >50.8-mm-diameter can be provided. Cryogenic operating temperature transmittance measurements down to 10 K 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 OD 4 from 2000 to 50,000 nm, and to OD 5 from 500 to 2000 nm.