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#EFC373 SP701 Extended Hot Mirror/Reflects Near-IR Wavelengths up to 1550nm

For applications in which full spectrum infrared (i.e., heat) and/or UV radiation are an issue, SP701 filters provide extended hot mirror blocking throughout the UV and in the near-IR out to 1550nm. The substrate is heat-resistant Borofloat and is available in 1mm and 2mm thicknesses. Custom unmounted sizes can be provided up to 760 x 200mm or 600mm in diameter.

Useful Range : 410-690nm
Cut-off Wavelength 50% T : 400 / 705nm (cut-on / cut-off)
Tolerance : +/- 10nm
Peak Transmission : ≥85%
Surface Quality : 60/40

Download Transmission Data

SP701 Transmission Data (Typical)

wavelength (nm)	transmission (%)

wavelength (nm)	transmission (%)

Filter Mount & Size Options

Threaded Mount

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Unmounted & Custom Size

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The performance of a filter is based on what happens to light passing through the filter. The apparent color of light reflected off the surface is not a reliable way to judge the filter's capabilities. Batch-to-batch difference in the apparent color of the coatings or filter substrates can often be easily seen when looking at two examples of the same filter type. The color of the coating does not indicate a disparity in performance. Filters 62mm and greater have a surface quality tolerance of 60/40.

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