Neutral Density Filters – OD 0.1 – 4.0, absorptive or metallic. No minimum order; DFM review included with every RFQ.
We supply neutral density filters to OD 0.1 – 4.0, absorptive or metallic – and because we are a machining house first, non-standard outlines, notches and mounting holes are part of the normal order, not an exception.
Specification envelope
| Optical specification | OD 0.1 – 4.0, absorptive or metallic |
|---|---|
| RFQ inputs | PDF/DXF/STEP drawing, quantity brackets, surface and edge spec |
Design guidance
Three items decide most of the cost and lead time on this work:
- Over-specification is the quiet budget killer: a 20/10 scratch-dig face costs roughly three times an 80/50 face, so grade each surface individually.
The full rules live in our tolerance design guide and holes and edges design guide.
Who orders this
The recurring buyers of neutral density filters: microfluidic devices (chips, manifolds, via plates, bonded stacks); industrial displays (touch covers, gauge windows, printed bezels); ccd inspection equipment (CCD cover plates, reference grids, stage glass).
The fastest route to a quote is geometry: use the 3D builder below, draw a dimensioned 2D drawing from it, or open the site-wide custom glass machining 3D + 2D builder for fully custom parts.
Related reading on this site: ultra-thin quartz discs, alkali-free display glass, laser glass cutting.
Frequently asked questions
What files do you need for a quote?
A dimensioned PDF plus DXF or STEP geometry. If only a sketch exists, our drawing review service formalizes it before quoting.
Do parts ship with inspection data?
Dimensional reports, surface certificates and material certs per melt are available; specify the level on the RFQ.
Is there a minimum order for neutral density filters?
No. Single prototypes are accepted, and pricing steps down at 10, 100 and 1,000 pieces.
How fast can prototypes ship?
Machined prototypes ship in 5 – 10 working days. Coated or bonded parts add 1 – 2 weeks depending on queue slots.
Specifications on this page were last reviewed by our engineering team in August 2026.