# Large-Size, High-Precision Plane Reflecting Mirrors, Sapphire

> Large-Size, High-Precision Plane Reflecting Mirrors, Sapphire — an optical mirror: Optical Glass, Customized. Specs, RFQ checklist and custom sizes to…

- Page: https://machiningglass.com/products/large-size-high-precision-plane-reflecting-mirrors-sapphire/
- SKU: MG-99A03E
- Category: Optical Lenses, Prisms & Mirrors > Optical Mirrors & Reflective Substrates
- Image: https://machiningglass.com/wp-content/uploads/2026/10/Large-Size-High-Precision-Plane-Reflecting-Mirrors-Sapphire.webp
- Updated: 2026-10-24

Product type: Optical Mirror. Application: Lighting, Medical, Optical, Photography. Model: Sapphire mirror.

## Overview

The Large-Size, High-Precision Plane Reflecting Mirrors, Sapphire is supplied as an optical mirror made from Optical Glass. Optical / electrical data: transmittance Customized. Coating: Customized. 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

| Parameter | Value |
| --- | --- |
| Material | Optical Glass |
| Type | Optical Mirror |
| Shape | Customized |
| Transmittance | Customized |
| Coating | Customized |
| Usage | Lighting, Medical, Optical, Photography |
| Model NO. | Sapphire mirror |
| Lenses Color | Customized |
| Supplier | Hesy. Co., Ltd |

## Technical data

| Parameter | Value |
| --- | --- |
| Diameter | Ø5- Ø800 |
| Surface Flatness | PV<λ/10,RMS<λ/200( λ=632.8nm) |
| Parallelism tolerance | Customizable |
| Surface Quality | Grade Ⅰ-Ⅴ |
| Materials | H-K9L, fused silica and other optical material |

## What to specify when you request a quote

- **Material** — listed as “Optical Glass”; name the glass or crystal.
- **Geometry** — give diameter, focal length or radii, angles and tolerances.
- **Surface figure** — quote surface figure (λ) and scratch-dig.
- **Centring and edges** — state centration and edge chamfer.
- **Coating** — listed as “Customized”; list the band and reflectance or transmission target.

## Engineering guides for this part

For material grades and coating options, see [Fused Silica Windows for UV and Laser Optical Systems](https://machiningglass.com/materials/fused-silica-windows-for-uv-and-laser-optical-systems/). How parts like this are machined and finished is covered in [Laser Glass Machining for Precision Micro Features](https://machiningglass.com/capabilities/laser-glass-machining-for-precision-micro-features/). 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 [Technical Guide to Glass Thickness and Flatness Requirements](https://machiningglass.com/resources/technical-guide-to-glass-thickness-and-flatness-requirements/). A related standard product is [Laser Beam Splitter Glass Sheet](https://machiningglass.com/products/laser-beam-splitter-glass-sheet/).

## FAQ

### What is the Large-Size, High-Precision Plane Reflecting Mirrors, Sapphire made of?

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

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

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

### Where is this optical mirror used?

Listed applications: Lighting, Medical, Optical and Photography.

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

Include material, geometry, surface figure, centring and edges and coating, 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=17965#mg-rfq

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