Alkali-Free Glass for CCD Inspection Equipment: Alkali-Free Glass (CTE 3.2 x 10^-6 /K, 350 nm – 2.0 um). Single-piece prototypes to production volumes, quoted from your drawing.
alkali-free glass for ccd inspection equipment programs need large-format screening plates with sub-micron cleanliness. Alkali-Free Glass is the fit here because it offers no alkali ion migration into TFT or sensor layers. Typical parts: CCD cover plates, reference grids, stage glass.
Specification envelope
| Material | Alkali-Free Glass (AF32 / EAGLE-class display glass) |
|---|---|
| Thermal expansion (CTE) | 3.2 x 10^-6 /K |
| Service temperature | 600 C (Tg 717 C) |
| Transmission range | 350 nm – 2.0 um |
| Density | 2.43 g/cm3 |
| Knoop hardness | 590 kg/mm2 |
| Refractive index | 1.51 @ 587 nm |
| Stock thickness | 0.10 – 1.1 mm |
| Maximum blank size | 400 x 300 mm |
| RFQ inputs | PDF/DXF/STEP drawing, quantity brackets, surface and edge spec |
Process window
Beyond this page, Alkali-Free Glass routinely runs through grinding, cnc machining, double-side polishing, drilling in our shop – most real parts combine two or three of these steps.
Getting the drawing right
The shop-floor rules that matter here:
- Material note: thin sheets below 0.3 mm demand carrier-supported handling through every step.
- 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.
For the complete framework, see the tolerance design guide and the holes and edges design guide.
Where these parts end up
The recurring buyers of alkali-free glass for ccd inspection equipment: mems devices (cap wafers, TGV substrates, motion-sensor lids); industrial displays (touch covers, gauge windows, printed bezels). Background reading on the underlying material science: SCHOTT AF 32 eco.
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: alkali-free display glass, CCD screening plates, ITO coated glass.
Common questions
How does Alkali-Free Glass behave under heat?
CTE is 3.2 x 10^-6 /K and continuous service reaches 600 C (Tg 717 C), which is what drives its use where no alkali ion migration into TFT or sensor layers matters.
What do ccd inspection equipment programs usually order?
CCD cover plates, reference grids, stage glass. Typical spec: particle spec Class 100 packing, flatness 5 um.
Is there a minimum order for alkali-free glass for ccd inspection equipment?
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.