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MidOpt’s AB555 acrylic absorptive bandpass filter passes light in the visible range and blocks all near-infrared, ultraviolet and violet wavelengths. SP644 is useful to achieve natural color rendition with superior response in the blue channel.ĪB555 ACRYLIC ABSORPTIVE NIR/UV-BLOCK VISIBLE BANDPASS FILTER Uniform blocking of near-infrared wavelengths out to 1100nm, uniformly high transmission across the visible range, and a 50% point in the middle of the red portion of the spectrum make this an ideal choice for cameras with typical CMOS sensor responsivity. This design offers an attractive price/performance option compared to other designs.
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MidOpt’s SP644 is one of several dichroic filters offered mainly for use as an internal infrared blocking filter in color cameras. SP644 NEAR-IR/MID-RED DICHROIC BLOCK SHORTPASS FILTER SP635 filters are A/R coated on both sides to maximize visible band transmission while offering superior out-of-band blocking. This is an absorptive infrared rejection filter that is also recommended for protecting a camera’s sensor from stray light emitted by lasers or other high power near-IR light sources. When working with any camera that has been modified and its internal IR cut filter has been removed, a SP635 filter mounted on the front of the lens, when desired, can return function once again like the unmodified camera. MidOpt’s SP635 filters are commonly used inside cameras to block infrared light. SP635 ABSORPTIVE VISIBLE SHORTPASS/NEAR-IR BLOCK FILTER New IR-Block/Visible Transmitting Optical Filters
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MidOpt’s unique filter mounting options include: Standard Threaded Mounts, Slip Mounts that easily adapt to lenses without filter threads, the exclusive 25.4™ C-Mount for easy installation into cameras, and custom fabrication of unmounted shapes and sizes. “ Mounting solutions are also available to help customize any imaging application,” says MidOpt Founder Barry Warzak. (January 19, 2017) – MidOpt announces the availability of three new imaging filters primarily intended for blocking unwanted near-infrared light. Filters include: 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.