Product type: Optical Windows. Application: Lighting, Medical, Optical, Photography.
Overview
The Custom Double Domed Sapphire Crystal Water Resistant Domed Flat Cover Sapphire Crystal Watch Glass Price is supplied as a custom precision glass component made from Optical Glass. Listed geometry: flat shape. Optical / electrical data: transmittance >95%. Coating: Sapphire Windows. Typical applications: Lighting, Medical, Optical and Photography. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
| Material | Optical Glass |
|---|---|
| Type | Optical Windows |
| Shape | Flat |
| Transmittance | >95% |
| Coating | Sapphire Windows |
| Usage | Lighting, Medical, Optical, Photography |
| Lenses Color | Clear |
| Supplier | Shenyang Ebetter Optics Co., Ltd. |
Technical data
| Diameter | 0.2-300mm |
|---|---|
| Thickness | 0.1-100mm |
| Dimension tolerance | +/-0.1mm or +/-0.02mm |
| Surface quality (scratch & dig) | 60/40, 40/20 or better |
| Clear aperture | >85%, >90% |
| Surface accuracy | L/10 L/2 L |
| Parallelism | +/-3' ,+/-30'' |
| Bevel | 0.1~0.3mm x 45 degree |
| Coating | AR, BBAR or Custom |
What to specify when you request a quote
- Material — listed as “Optical Glass”; name the glass or quartz grade.
- Outline and thickness — give outline, thickness and tolerances.
- Holes, slots and features — listed as “Flat”; dimension every hole and its position tolerance on the drawing.
- Edges — state edge finish and chamfer.
- Surface — state polish and flatness where they matter.
Engineering guides for this part
For material grades and coating options, see High-Purity Quartz Glass for Custom Machined Parts: Material & Coating Guide. How parts like this are machined and finished is covered in Custom Special-Shaped Glass Machining: Boosting B2B Output & Quality. For an application example, read Why Quartz Glass Components Excel in Coffee Machine Heating Modules. Before sending a drawing, check Design Guide for CNC Machined Precision Glass Components. A related standard product is LED Groove Cover Glass.

