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See all 108 Products in Family

325nm 12.5mm Dia., High Performance Longpass Filter

High Performance OD 4 Longpass Filters

Stock #34-295

S$264.00

Qty 1-5
S$264.00

Qty 6
S$211.20

Volume Pricing
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Curves eDrawings: eprt IGES PDF Drawings STEP: step

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Diameter (mm):

12.50 +0/-0.2

Cut-On Wavelength (nm):

325

Thickness (mm):

1.50

Thickness Tolerance (mm):

±0.1

Wavelength Range (nm):

200 - 1600

Angle of Incidence (°):

0.00

Optical Density OD:

≥4.0

Coating:

Hard Coated

Substrate:

UV Grade Fused Silica

Surface Quality:

60-40

Transmission (%):

>91

Type:

Longpass Filter

Rejection Wavelength (nm):

200 - 315

Transmission Wavelength (nm):

333 - 1600

Clear Aperture (%):

>80

Durability:

MIL-C-48497A, Section 3.4.1

Transmitted Wavefront, RMS:

≤λ/4 @ 633nm

Cut-On Tolerance (%):

±1

Slope Factor (%):

2.00

Coating Specification:

Surface 1: Hard Dielectric Sputtered, Surface 2: MgF₂

Regulatory Compliance

Reach 197:

Compliant

RoHS 2015:

Compliant

Product Family Description

Cut-On Slope <1%
Rejection OD ≥ 4.0
≥91% Transmission in Pass Band

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.

Longpass Filter Kits

The VIS Longpass Filter Kits include 7 filters from 400-700nm and the NIR Longpass Filter Kits include 8 filters from 700-1100nm. Both are ideal for integration with our filter wheels.