# Optical Large Cylindrical Prism with Customized Black Painting

> Optical Large Cylindrical Prism with Customized Black Painting — an optical prism: Glass. Specs, RFQ checklist and custom sizes to drawing.

- Page: https://machiningglass.com/products/optical-large-cylindrical-prism-with-customized-black-painting/
- SKU: MG-B57BC2
- Category: Optical Lenses, Prisms & Mirrors > Optical Prisms
- Image: https://machiningglass.com/wp-content/uploads/2026/10/Optical-Large-Cylindrical-Prism-with-Customized-Black-Painting.webp
- Updated: 2026-10-24

Product type: Rectangular Prism. Application: Beam Dispersion, Beam Split. Model: prism.

## Overview

Optical Large Cylindrical Prism with Customized Black Painting is an optical prism made from Glass. Listed geometry: cube corner prism shape. It is used in Medical Instrument. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.

## Specifications

| Parameter | Value |
| --- | --- |
| Material | Glass |
| Type | Rectangular Prism |
| Shape | Cube Corner Prism |
| Application | Medical Instrument |
| Usage | Beam Dispersion, Beam Split |
| Model NO. | prism |
| Specification of our beamsplitters as follow | *Material BK7 glass or UV grade fused silica |
| Supplier | China Star Optics Technology Co., Ltd. |

## What to specify when you request a quote

- **Material** — listed as “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** — list the band and reflectance or transmission target.

## Engineering guides for this part

How parts like this are machined and finished is covered in [Optical Glass Polishing for High Clarity Surfaces](https://machiningglass.com/capabilities/optical-glass-polishing-for-high-clarity-surfaces/). Before sending a drawing, check [Design Guide for Holes, Slots, and Edges in Custom Glass Parts](https://machiningglass.com/resources/design-guide-for-holes-slots-and-edges-in-custom-glass-parts/).

## FAQ

### What is the Optical Large Cylindrical Prism with Customized Black Painting made of?

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

### Where is this optical prism used?

Listed applications: Medical Instrument.

### 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=17229#mg-rfq

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