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ZnSe Optical Glass | CVD Zinc Selenide IR Optical Substrate

Nov 2,2026

ZnSe Optical Glass Manufacturer

CVD Zinc Selenide Broadband Infrared Optical Substrate

Felix Glass supplies high-purity CVD ZnSe (Zinc Selenide) optical glass substrates, offered in two distinct grades: IR imaging grade and laser grade. ZnSe features wide infrared transmission from visible to 16μm, making it a core material for CO₂ laser systems and long-wave thermal imaging. We provide custom blanks, windows, domes, lens substrates with precision polishing and anti-reflection coatings.

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Felix Glass CVD ZnSe optical glass substrate, IR grade and laser grade zinc selenide for infrared and CO2 laser optics

ZnSe Optical Glass | CVD Zinc Selenide
IR Grade / Laser Grade | Broadband IR Substrate

Material & Grade Overview

CVD ZnSe is chemical vapor deposited zinc selenide, the most common broadband infrared substrate. Material name ≠ performance grade. IR grade ZnSe is optimized for uniform transmission for thermal imaging, while laser grade ZnSe is controlled for ultra-low bulk absorption for continuous high-power 10.6μm CO₂ laser. Mixing grades will lead to laser thermal runaway or imaging defects.

Key Specifications & Custom Options

Material	CVD ZnSe (Zinc Selenide)
Transmission Range	0.6 μm ~ 16 μm
Available Grades	IR Imaging Grade, Laser Grade
Knoop Hardness	110 Knoop
Surface Quality	20‑10 / 40‑20 scratch‑dig
Coating Choices	BBAR, 10.6μm Laser AR, protective coating
Available Forms	Blank, window, dome, lens substrate, custom shape
Inspection	FTIR transmission, interferometer, inclusion screening, COA available

Manufacturing & Inspection Evidence

Interferometer Inspection

Precision Polishing

CVD ZnSe blanks and finished optical components

ZnSe Optical Substrate

We separate laser-grade and IR-grade ZnSe production and inspection batches strictly, to prevent wrong-grade delivery for laser or thermal imaging projects.

Typical Application

10.6μm CO₂ laser marking, cutting, engraving optics
LWIR thermal imaging, EO/IR gimbal, surveillance sensors
Infrared spectroscopy, optical gas detection instruments
Custom infrared domes, protective windows and lens blanks

Coating Selection Guide

BBAR coating is widely used for broadband IR imaging. 10.6μm laser AR coating is mandatory for high-power CO₂ laser optics. Ordinary IR AR coating cannot replace laser-grade low-absorption coating. Learn more about optical coating technology.

Order & Quotation Requirements (Valid RFQ Checklist)

To generate an accurate quotation within 24 hours, please prepare below information:

2D/3D engineering drawing (PDF / STEP / IGES)
Grade selection: IR imaging grade or laser grade
Dimension, clear aperture, surface quality & surface figure
Coating requirement and working wavelength
Quantity: prototype / pilot batch / mass production

Send Drawing For Quote

FAQ Snippets

What is the difference between IR grade ZnSe and laser grade ZnSe?

Laser grade ZnSe is controlled for ultra-low bulk absorption for CO₂ laser. IR grade ZnSe prioritizes uniform transmission for thermal imaging, not suitable for continuous high-power laser.

Is ZnSe fragile for outdoor use?

ZnSe is relatively soft. DLC protective coating can improve scratch and moisture resistance for outdoor gimbal and dome applications.

Can you supply unpolished ZnSe blanks?

Yes, raw CVD ZnSe blanks, semi-finished substrates and fully polished coated components are all available.

Related Products

ZnS Optical Glass Germanium Optical Glass CO2 Laser ZnSe Solution

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James Fu, Sales Director of FELIX OPTICAL GLASS, and a poster displaying contact information for an optical glass deep-processing factory.

James Fu, Sales Director of FELIX OPTICAL GLASS, and a poster displaying contact information for an optical glass deep-processing factory. 2

Learn more from our FAQ

What is the minimum order quantity for custom precision optical glass components?: FELIX OPTICAL GLASS offers highly flexible MOQs to support customer projects, including prototype testing, small-batch trial orders, and high-volume production. All products can be fully customized to your drawings, tolerances, and application standards. Please send us your specifications, and we will reply within 1-5 hours and provide an accurate quotation after careful evaluation within 1-2 days.

Can I get free glass samples for testing before bulk order?: Yes, our FELIX GLASS factory supports sample testing for a wide range of precision optical glass components and assemblies. The lead time for sample production is 3 to 7 working days. Please contact us today to arrange samples and obtain a customized solution that meets your needs.

What is the production lead time for custom optical glass components?: A: The production cycle for standard samples is 3-10 working days, while mass production requires 15-35 working days, depending on the complexity of the product and the order quantity. We provide reliable precision optical glass components and fast delivery services for orders from industries such as defense, industrial equipment, medical devices, shipbuilding, robotics, automotive, and aerospace. Please submit your project details so we can provide you with an accurate delivery schedule.

Are your optical glass products ISO, CE and RoHS certified?: All precision optical glass components from FELIX OPTICAL GLASS comply with ISO quality system standards as well as CE and RoHS requirements. We provide comprehensive test reports, spectral graphs, material certificates, and inspection documents for customer review. Please feel free to request complete certification details and a formal quotation at any time.

Do you offer one-stop custom optical glass processing services?: Yes. We offer a full range of precision optical glass component processing services, including CNC machining, precision grinding, optical polishing, chemical/physical tempering, vacuum coating (AR anti-reflective coating, AF anti-fingerprint coating, AG anti-glare coating, IR infrared coating), and screen printing. From raw materials to finished products, every step is completed in our own factory. Please tell us your needs, and we will provide you with the most cost-effective solution.

CONTACT US NOW FOR A QUOTE

We will respond promptly within 1 to 5 hours and provide an optimal, formal quotation within 1 to 2 days. Partnering with us is the smartest choice—start a mutually beneficial partnership today!

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With 19 years of experience as a precision optical glass expert, we provide comprehensive and satisfactory customized solutions.

✔ROHS CE certified ISO9001:2005 quality management system
✔Professional team over 19 years’ experience under Japanese management system
✔Help over 2000+ companies to make prototypes into mass production successfully
✔Challenge the 100% on time delivery goal 100% full inspection report
✔Cost-down solutions for over 2000+ companies with success
✔Free solutions provided based on different industries
✔Support free samples (quick sample production) Small quantity (100-1000pcs) available

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URL: www.felixglass.com

james@felixglass.com: +86 185 6503 2888

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