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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

350nm 25mm Dia., High Performance Longpass Filter

High Performance OD 4.0 Longpass Filters

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Stock #34-299
£209.10
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Qty 1-5
£209.10
Qty 6+
£179.58
Volume Pricing
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Diameter (mm):
25.00 +0/-0.2
Cut-On Wavelength (nm):
350.00
Thickness (mm):
1.50
Thickness Tolerance (mm):
±0.1
Rejection Wavelength (nm):
200 - 340
Transmission Wavelength (nm):
358 - 1600
Wavelength Range (nm):
200 - 1600
Angle of Incidence (°):
0
Optical Density OD (Average):
≥4.0
Coating:
Hard Coated
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Surface Quality:
60-40
Transmission (%):
>91
Type:
Longpass Filter
Clear Aperture (%):
>80
Durability:
MIL-C-48497A, Section 3.4.1
Transmitted Wavefront, RMS:
≤λ/4 @ 633nm
Cut-On Tolerance (%):
±1
Slope Factor (%):
1.00
Note:
Arrow on part indicates filter coated surface.
Coating Specification:
Surface 1: Hard Dielectric Sputtered
Surface 2: AR Coated

Regulatory Compliance

RoHS 2015:
Reach 223:

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.

Note: These filters are optimized for high spectral performance rather than high Laser Induced Damage Thresholds (LIDT). A typical LIDT for these filters is 1 J/cm2 @ 532nm, 10ns. Please contact us if you require a filter with a higher LIDT value.

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

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