Product type: Glass Dome. Application: Lighting, Medical, Optical, Photography, Astronomy.
Overview
The Glass or silica dome with customized size and coating is supplied as a custom precision glass component made from Optical Glass. Listed geometry: diameter 2-120+0.00/-0.20mm, dome shape. Optical / electrical data: transmittance 90%-95%. Coating: HMC; surface quality 80-50; flatness 3.0fr,PWR;2.0fr,IRR. It is used in Lighting, Medical, Optical, Photography and Astronomy. 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 | Glass Dome |
| Shape | Dome |
| Transmittance | 90%-95% |
| Coating | HMC |
| Surface quality | 80-50 |
| Flatness | 3.0fr,PWR;2.0fr,IRR |
| Clear Aperture | >90% |
| Usage | Lighting, Medical, Optical, Photography, Astronomy |
| Lenses Color | Clear |
| Specifications | Items |
| Diameter tolerance | 2-120+0.00/-0.20mm |
| ROC1 | 1.25mm |
| ROC2 | 1.25mm |
| Centerness | ETV<0.08mm |
| Chamfer | 0.1-0.3mmx45deg |
| Standard | MIL-PRF-13830B |
| Supplier | CPG OPTICS LIMITED |
Technical data
| Items | Description | |
| Sapphire Dome | Material: | Fused silica/Optical glass |
| Diameter tolerance: | 2-120+0.00/-0.20mm | |
| ROC1: | 1.25mm | |
| ROC2: | 1.25mm | |
| Flatness: | 3.0fr,PWR;2.0fr,IRR | |
| Surface quality: | 80-50 | |
| Centerness: | ETV<0.08mm | |
| Clear Aperture: | >90% | |
| Chamfer: | 0.1-0.3mmx45deg | |
| Coating: | Uncoated | |
| Standard: | MIL-PRF-13830B |
What to specify when you request a quote
- Material — listed as “Optical Glass”; name the glass or quartz grade.
- Outline and thickness — listed as “2-120+0.00/-0.20mm”; give outline, thickness and tolerances.
- Holes, slots and features — listed as “Dome”; dimension every hole and its position tolerance on the drawing.
- Edges — listed as “0.1-0.3mmx45deg”; state edge finish and chamfer.
- Surface — listed as “80-50”; state polish and flatness where they matter.
Engineering guides for this part
For material grades and coating options, see Custom Precision Glass: Materials & Coatings for Special Shapes. 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 Choosing Glass Materials for Optical & Industrial Components. A related standard product is LED Groove Cover Glass.
