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350nm 25mm Dia., High Performance Longpass Filter

High Performance OD 4.0 Longpass Filters

High Performance OD 4.0 Longpass Filters

Stock #34-299
Qty 1-5
Qty 6
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Diameter (mm):
25.00 +0/-0.2
Cut-On Wavelength (nm):
Thickness (mm):
Thickness Tolerance (mm):
Rejection Wavelength (nm):
200 - 340
Transmission Wavelength (nm):
358 - 1600
Wavelength Range (nm):
200 - 1600
Angle of Incidence (°):
Optical Density OD (Average):
Hard Coated
Surface Quality:
Transmission (%):
Longpass Filter
Clear Aperture (%):
MIL-C-48497A, Section 3.4.1
Transmitted Wavefront, RMS:
≤λ/4 @ 633nm
Cut-On Tolerance (%):
Slope Factor (%):
Coating Specification:
Surface 1: Hard Dielectric Sputtered, Surface 2: MgF2

Regulatory Compliance

RoHS 2015:
Reach 209:

Product Family Description

Our High Performance Longpass filters feature 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 our TECHSPEC® High Performance Shortpass Filters.

Our TECHSPEC® Rotating Filter Wheel can be used for applications requiring a variety of filters.

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