Hellma CVD ZnS
Home » Products » Infrared Material » Hellma CVD ZnS


Hellma CVD ZnS

CVD Ceramics' chemically vapor deposited CVD Zinc Sulfide is the low cost alternative for infrared windows, domes and optical elements.
With a fracture strength double that of zinc selenide and high hardness.
facebook sharing button
twitter sharing button
line sharing button
wechat sharing button
linkedin sharing button
pinterest sharing button
whatsapp sharing button
sharethis sharing button
  • Hellma CVD ZnS

  • Hellma

  • CLASER XS010#

General Introduction:

Cleartran is a form of CVD Zinc Sulfide material that is modified by a post-deposition hot isostatic process. This process removes zinc hydrides from the crystal lattice, normalizes crystal structure and purifies the material. These contribute to single crystal-like transmittance in the visible through far infrared ranges (0.35 -14 microns). With its low absorption and scatter throughout its broad transmitting range and high optical quality, Cleartran is particularly well-suited for multi-spectral applications that require a single aperture for beam path for several wavebands.

CVD Zinc Sulfide and Cleartran are chemically inert, non-hygroscopic, highly pure, theoretically dense and easily machined.

Custom diameters, rectangles, CNC-profiled blanks, generated lens blanks, prisms and near-net shape domes can be made to your specifications.


1. Excellent mechanical and environmental resistance

2. Transmission in VIS and IR  (0.35 to 14µm)

3. Low scattering

4. Chemically inert

5. Non-hygroscopic

6. Easily machined

Main applications:

1. High-energy carbon dioxide laser system

2. High Resolution Forward-Looking infrared (FUR)

3. Protective window of thermal imaging equipment

4. Small Windows and lenses for medical and T applications, such as thermometers and spectrometers

5. Evaporation source material

6. Small windows and lenses in medical and industrial applications

7. Thermometry and spectroscopy




Room 501, Building 46, No. 52 Chengliu Middle Road,
Jiading District, Shanghai
+86 136-0179-8077
+86 21-69125769
Copyright © 2022 Shanghai C-Laser Materials Technology Ltd. | Support By Leadong | Sitemap      沪ICP备2022030265号-1