# Sapphire dome with laser AR coating for infrared use

> Sapphire dome with laser AR coating for infrared use — a custom precision glass component: Optical Glass, HMC. Specs, RFQ checklist and custom sizes to…

- Page: https://machiningglass.com/products/sapphire-dome-with-laser-ar-coating-for-infrared-use/
- SKU: MG-FB391E
- Category: Custom Glass > Custom Precision Glass Components
- Image: https://machiningglass.com/wp-content/uploads/2026/10/Sapphire-dome-with-laser-AR-coating-for-infrared-use.webp
- Updated: 2026-10-24

Product type: Glass Dome. Application: Lighting, Medical, Optical, Photography, Astronomy. Model: Sapphire dome.

## Overview

Sapphire dome with laser AR coating for infrared use: a custom precision glass component made from Optical Glass. Listed geometry: diameter 156.0+/-0.1mm, dome shape. Optical / electrical data: transmittance >95%. Coating: HMC; surface quality 40-20; flatness 5.0fr,PWR; 0.5fr,IRR. Listed for Lighting, Medical, Optical, Photography and Astronomy applications. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.

## Specifications

| Parameter | Value |
| --- | --- |
| Material | Optical Glass |
| Type | Glass Dome |
| Shape | Dome |
| Diameter | 156.0+/-0.1mm |
| Transmittance | >95% |
| Coating | HMC |
| Surface quality | 40-20 |
| Flatness | 5.0fr,PWR; 0.5fr,IRR |
| Clear Aperture | >97% |
| Usage | Lighting, Medical, Optical, Photography, Astronomy |
| Model NO. | Sapphire dome |
| Lenses Color | Clear |
| Specifications | Items |
| Central thickness | 4.0+/-0.1mm |
| Centerness | <1 arcmin |
| Standard | MIL-PRF-13830B |
| Supplier | CPG OPTICS LIMITED |

## Technical data

|   |   |   |
| --- | --- | --- |
| Items | Description |  |
| Sapphire dome | Material: | Optical sapphire, C-axis |
| Diameter: | 156.0+/-0.1mm |  |
| Central thickness: | 4.0+/-0.1mm |  |
| Flatness: | 5.0fr,PWR; 0.5fr,IRR |  |
| Surface quality: | 40-20 |  |
| Centerness: | <1 arcmin |  |
| Clear Aperture: | >97% |  |
| 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 “156.0+/-0.1mm”; give outline, thickness and tolerances.
- **Holes, slots and features** — listed as “Dome”; dimension every hole and its position tolerance on the drawing.
- **Edges** — state edge finish and chamfer.
- **Surface** — listed as “40-20”; 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](https://machiningglass.com/materials/high-purity-quartz-glass-for-custom-machined-parts-material-coating-guide/). How parts like this are machined and finished is covered in [CNC Glass V-Groove Machining for LED and Optical Parts](https://machiningglass.com/capabilities/cnc-glass-v-groove-machining-for-led-and-optical-parts/). For an application example, read [How to Handle and Maintain Precision Glass Components in Laser Systems](https://machiningglass.com/applications/how-to-handle-and-maintain-precision-glass-components-in-laser-systems/). Before sending a drawing, check [Choosing Glass Materials for Optical & Industrial Components](https://machiningglass.com/resources/choosing-glass-materials-for-optical-industrial-components/). A related standard product is [Custom Special-Shaped Glass Plate](https://machiningglass.com/products/custom-special-shaped-glass-plate/).

## FAQ

### What is the Sapphire dome with laser AR coating for infrared use made of?

It is listed as Optical Glass. Coating: HMC. Other grades can be quoted if your application needs different transmission, thermal or chemical properties.

### What sizes and thicknesses are available?

The listing gives diameter 156.0+/-0.1mm. Custom outlines and thicknesses are made to drawing; state the tolerance you need.

### What optical or electrical performance does it have?

Listed values: transmittance >95%. Confirm the values at your operating wavelength, angle and temperature when you request a quote.

### Where is this custom precision glass component used?

Listed applications: Lighting, Medical, Optical, Photography and Astronomy.

### What should I include in a quote request?

Include material, outline and thickness, holes, slots and features, edges and surface, plus quantity and a drawing if the part is custom.

## Request a quote

Send drawings, tolerances and quantity: https://machiningglass.com/contact/?rfq_product_id=2885#mg-rfq

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Source: Custom Precision Glass Machining — https://machiningglass.com/