MidOpthas announced the release of three new imaging filters primarily designed for blocking unwanted near-infrared light: The SP635 Absorptive Visible Shortpass/Near-IR Block Filter, SP644 Near-IR/Mid-Red Dichroic Block Shortpass Filter, and AB555 Acrylic Absorptive Near-IR/UV-Block Visible Bandpass Filter.
SP635 filters are used inside cameras to block infrared light and feature a useful range of 380 – 585 nm with a cut-off wavelength of 635 nm. The filters, which features a peak transmission of ≥90%, are anti-reflection coated on both sides to maximize visible band transmission.
SP644 filters are one of several dichroic filters offered mainly for use as an internal infrared blocking filter in color cameras and feature a useful range of 395 – 638 nm with a cut-off wavelength of 648 nm. These filters feature a peak transmission of ≥90%, and are a suitable choice to be paired with CMOS image sensor responsivity, according to MidOpt.
Lastly, AB555 filters pass light in the visible range and blocks all near-infrared, ultraviolet and violet wavelengths and feature a useful range of 470 – 645 nm with a peak transmission of ≥42%. These filters offer laser protection at 1064nm (O.D. 6). Additionally, optical density exceeds 5.0 in the UV (190 - 375nm), near-IR (760 - 1070nm) and at 10,600 nm.
To Learn More:
Contact: Midwest Optical Systems, Inc.
Headquarters: Palatine, IL, USA
Product: IR block/visible transmitting optical filters
Key Features: Useful range of 380 – 585 nm with a cut-off wavelength of 635 nm (SP635), useful range of 395 – 638 nm with a cut-off wavelength of 648 nm (SP644), useful range of 470 – 645 nm (AB555).
What MidOpt says:
View more information on the filters.
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