Longpass Filters

HLPF-12.5-900

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High performance longpass filter (φ12.5mm)
Estimate separately
Classification High performance longpass filter (HLPF)
Cuton wavelength(nm) 900
YESRoHS対応状況

Product documentation

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Description

High performance longpass filter features high transmission in the pass band combined with superior blocking in the rejection band. With a rejection band optical density of 4.0 combined with >91% in the pass band these filters are ideal for a wide variety of applications. Eliminate stray light by creating custom bandpass filters when combined with hiigh performance shortpass filters.
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Specifications

Classification High performance longpass filter (HLPF)
External form D(mm) φ12.5
Externals Tolerance(mm) 0/-0.2
Thickness(mm) 1.5±0.1
Cuton wavelength(nm) 900
Transmission band(nm) 915～1650
Transmission prozone(nm) 200～880
Material Fused silica
Clear Aperture(mm) [Dia.] ×0.8
Transmitted Wavefront ≦1/4λ(@632.8nm)(RMS)
Surface quality 40 - 20
Average transmission Tavg ≧91％(@pass band transmission)
Blocking performance OD>4(@rejection band blocking,avg)
カットオン波長公差 ±1％
カットオンスロープ <1％
Angle of Incidence 0°(parallel beam)
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Curve(FOR REFERENCE ONLY)

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Specification drawings(or pictures)

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