Name: 850nm 25mm Dia., High Performance Longpass Filter
Brand: TECHSPEC
SKU: 66-236
Price: ₹22,620

850nm 25mm Dia., High Performance Longpass Filter

High Performance OD 4.0 Longpass Filters

Stock #66-236 10 to 12 days

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₹22,620

Qty 1-5
₹22,620

Qty 6+
₹19,401

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Diameter (mm):

25.00 +0.0/-0.2

Angle of Incidence (°):

Optical Density OD (Average):

≥4.0

Cut-On Wavelength (nm):

850.00

Fused Silica (Corning 7980)

Coating:

Hard Coated

Rejection Wavelength (nm):

200 - 835

Surface Quality:

60-40

Thickness (mm):

3.00

Thickness Tolerance (mm):

±0.1

Transmission (%):

≥91

Transmission Wavelength (nm):

865 - 1650

Type:

Longpass Filter

Clear Aperture (%):

>80

Transmitted Wavefront, RMS:

≤λ/4 @ 633nm (prior to coating)

Cut-On Tolerance (%):

±1

Slope Factor (%):

Environmental Durability:

Humidity per MIL-STD-810H, Section 507.6
Temperature per MIL-STD-810H, Section 501.7 and 502.7

Physical Durability:

Adhesion per MIL-PRF-13830B, Section C.4.5.12
Moderate abrasion per MIL-PRF-13830B, Section C.4.5.11
Cleaning per MIL-C-48497A Section 4.5.4.2

Note:

Arrow on part indicates filter coated surface.

Coating Specification:

Surface 1: Hard Dielectric Sputtered
Surface 2: AR Coated

Wavelength Range (nm):

200 - 1650

Regulatory Compliance

RoHS 2015:

Compliant

Certificate of Conformance:

View

REACH 241:

Compliant

Product Family Description

Cut-On Slope <1%
Rejection OD ≥ 4.0
≥91% Transmission in Pass Band
Variety of OD 4.0 Longpass Filter Kits Available

TECHSPEC® High Performance OD 4.0 Longpass Filters feature high transmission in the pass band combined with superior blocking in the rejection band. Due to 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. TECHSPEC® High Performance OD 4.0 Longpass Filters are hard coated, with a hard dielectric sputtered as the first surface and AR coating as the second. Eliminate stray light by creating custom bandpass filters when combined with 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.

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

850nm 25mm Dia., High Performance Longpass Filter

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Regulatory Compliance

Product Family Description