Dichroic Coating Glass: cut-on/cut-off slopes < 2% of edge wavelength. Single-piece prototypes to production volumes, quoted from your drawing.
dichroic coating glass is thin-film interference stack applied by ion-beam sputtering, 40 – 120 layers. On the substrate you specify it wavelength-selective reflection and transmission – the specification we run to is cut-on/cut-off slopes < 2% of edge wavelength.
Specifications at a glance
| Treatment | Dichroic Coating – thin-film interference stack |
|---|---|
| Specification | cut-on/cut-off slopes < 2% of edge wavelength |
| Deposition / method | ion-beam sputtering, 40 – 120 layers |
| RFQ inputs | PDF/DXF/STEP drawing, quantity brackets, surface and edge spec |
Design guidance
Before sending the RFQ, check these against your drawing:
- Sequence matters: all machining happens before dichroic coating; post-coating rework is not economical.
- 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.
Typical applications
dichroic coating glass shows up across optical sensors (sensor windows, filter caps, lens covers); machine vision (camera windows, ring-light diffusers, calibration plates); industrial displays (touch covers, gauge windows, printed bezels). Background reading on the underlying material science: RP Photonics: dichroic mirrors.
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.
Engineers scoping this work usually also review etched LED/OLED covers, infrared windows, AR coated glass materials.
Frequently asked questions
Do parts ship with inspection data?
Dimensional reports, surface certificates and material certs per melt are available; specify the level on the RFQ.
What does dichroic coating add?
Wavelength-selective reflection and transmission. Applied by ion-beam sputtering, 40 – 120 layers to cut-on/cut-off slopes < 2% of edge wavelength.
Is there a minimum order for dichroic coating glass?
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.
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.
Specifications on this page were last reviewed by our engineering team in September 2026.