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Availability: Production Overrun Product:
25 In stock

Customize this Filter: Request a quote for custom specifications, sizes, or volume quantities.




About Production Overrun Products

Omega's production overruns offer exceptional value at a discounted price, and are backed by the same warranty as our stock products. After overrun inventory is exhausted, this product will still be available on a made-to-order basis. Please note it is available at this price on an overrun basis only.


Spectral Curves

The spectral curve and ascii data is a typical representation of this filter's performance, but may vary due to production and design variations. Omega only guarantees this part to meet the product specifications listed.

Detailed Specifications

Additional Information

SKU W137
Filter Type Neutral Density
Inventory Type Production Overrun
Coating Type Surface Coating
Shape Round
Diameter (mm) 12.7
Diameter Tolerance (mm) +0/-0.25
Thickness (mm) 4
Thickness Tolerance (mm) +0.05/-0.05
Clear Aperture Diameter (mm) ≥10
Flatness ns
Parallelism wedge < 15 arc seconds
Mounting Type Unmounted
Attenuation OD0.35 +/- 0.02 at 1300 nm, (performance goal)
Neutrality +/- OD0.01 about value at 1300 nm, 1270 to 1350 nm (performance goal)
Transmitted Wavefront Distortion ns
Angle of Incidence 0
AR Coating none
Minimum Surface Quality Assembly per MIL-C-48497A (F scratch/ F Dig)