# IR thermal aspherical or spherical plano convex lens of chalcogenide glass

> IR thermal aspherical or spherical plano convex lens of chalcogenide glass — an optical lens: Optical Glass, 9.2.00+/-0.25mmmm thick, Anti-Reflection.…

- Page: https://machiningglass.com/products/ir-thermal-aspherical-or-spherical-plano-convex-lens-of-chalcogenide-glass/
- SKU: MG-A3434F
- Category: Optical Lenses, Prisms & Mirrors > Precision Optical Lenses
- Image: https://machiningglass.com/wp-content/uploads/2026/10/IR-thermal-aspherical-or-spherical-plano-convex-lens-of-chalcogenide-glass.webp
- Updated: 2026-10-24

Product type: Aspherical lens. Application: Lighting, Medical, Optical, Photography, Thermal imaging.

## Overview

The IR thermal aspherical or spherical plano convex lens of chalcogenide glass is supplied as an optical lens made from Optical Glass. Listed geometry: diameter 66.00-0.06/-0.25mm, thickness 9.2.00+/-0.25mmmm, single-lens shape. Optical / electrical data: transmittance >95%. Coating: Anti-Reflection. It is used in Lighting, Medical, Optical, Photography and Thermal imaging. 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 | Aspherical lens |
| Shape | Single-lens |
| Diameter | 66.00-0.06/-0.25mm |
| Thickness | 9.2.00+/-0.25mmmm |
| Transmittance | >95% |
| Coating | Anti-Reflection |
| Parallelism | < |
| Clear aperture | S1>62.0mm, S2>62.0mm |
| Usage | Lighting, Medical, Optical, Photography, Thermal imaging |
| Lenses Color | Black |
| Specifications of one of them | Items |
| R1 | 89.4+/-0.08mm, CX, aspheric |
| K value | -1.074 |
| R2 | Infinity |
| S1&S2 | S-D 20-10 |
| Both edges | <0.5mmx45° |
| Standard | MIL-0-13830B |
| CPG is also an ISO | 9001&14001 certified manufacture, we deliver fast and provide best cost performance ratio for our customers. |
| Supplier | CPG OPTICS LIMITED |

## Technical data

|   |   |   |
| --- | --- | --- |
| Items | Description |  |
| Aspherical thermal lens | Material: | NHG IRG202 |
| Diameter: | 66.00-0.06/-0.25mm |  |
| Thickness: | 9.2.00+/-0.25mmmm |  |
| R1: | 89.4+/-0.08mm, CX, aspheric |  |
| K value: | -1.074 |  |
| R2: | Infinity |  |
| Surface quality: | S1&S2:S-D 20-10 |  |
| Parallelism: | <2' |  |
| Clear aperture: | S1>62.0mm, S2>62.0mm |  |
| Chamfer: | Both edges: <0.5mmx45° |  |
| Standard: | MIL-0-13830B |  |

## What to specify when you request a quote

- **Material** — listed as “Optical Glass”; name the glass or crystal.
- **Geometry** — listed as “66.00-0.06/-0.25mm”; give diameter, focal length or radii, angles and tolerances.
- **Surface figure** — quote surface figure (λ) and scratch-dig.
- **Centring and edges** — listed as “<0.5mmx45°”; state centration and edge chamfer.
- **Coating** — listed as “Anti-Reflection”; list the band and reflectance or transmission target.

## Engineering guides for this part

For material grades and coating options, see [AR-Coated Glass Materials for High-Transmission Optical Parts](https://machiningglass.com/materials/ar-coated-glass-materials-for-high-transmission-optical-parts/). How parts like this are machined and finished is covered in [Flat Glass Polishing Process for Precision Substrates](https://machiningglass.com/capabilities/flat-glass-polishing-process-for-precision-substrates/). For an application example, read [AR Coated Glass for Appliance Touch Screens: Specs and Selection](https://machiningglass.com/applications/ar-coated-glass-for-appliance-touch-screens-specs-and-selection/). Before sending a drawing, check [Quartz Glass Manufacturing: Controlling Thermal Conductivity in Fused Silica](https://machiningglass.com/resources/quartz-glass-manufacturing-controlling-thermal-conductivity-in-fused-silica/). A related standard product is [AR-Coated High-Transparency Optical Glass](https://machiningglass.com/products/ar-coated-high-transparency-optical-glass/).

## FAQ

### What is the IR thermal aspherical or spherical plano convex lens of chalcogenide glass made of?

It is listed as Optical Glass. Coating: Anti-Reflection. 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 66.00-0.06/-0.25mm, thickness 9.2.00+/-0.25mmmm. 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 optical lens used?

Listed applications: Lighting, Medical, Optical, Photography and Thermal imaging.

### 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=15159#mg-rfq

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