Longpass Filters

HLPF-12.5-650

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High performance longpass filter (φ12.5mm)
Estimate separately
Classification High performance longpass filter (HLPF)
Cuton wavelength(nm) 650
YESRoHS対応状況

Product documentation

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.

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) 650
Transmission band(nm) 660~1650
Transmission prozone(nm) 200~637
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)

Curve(FOR REFERENCE ONLY)

Specification drawings(or pictures)