ZnSe asphere manufacturing
CNC grinding and polishing.
ZnSe material specifications
| Material name | Zinc Selenide |
| Chemical formula | ZnSe |
| Index of Refraction | 2,403 @ 10.6µm |
| Transmission range | 0.6µm to 21µm |
| Density | 5.3 g/cm3 |
| Hardness | 120 Knoop |
| Young’s modulus | 70.97 GPa |
| Thermal expansion | 7*10-6 °K-1 |
| Thermal conductivity | 19 W/(m*°K) |
| Melting point | 1790 °K |
Bi-convex asphereWe use cookies (and similar identifiers) to deliver and measure personalized ads. By clicking Accept, you consent. You can adjust or withdraw consent anytime in Settings. Your choices are shared with our ad partners (including Google) to respect your preferences. See our Privacy policy and Google’s Terms for details on clicking below button.
Accept settingsHide notification onlySettingsView Google business safety & privacy and terms siteWe may request cookies to be set on your device. We use cookies to let us know when you visit our websites, how you interact with us, to enrich your user experience, and to customize your relationship with our website.
Click on the different category headings to find out more. You can also change some of your preferences. Note that blocking some types of cookies may impact your experience on our websites and the services we are able to offer.
These cookies are strictly necessary to provide you with services available through our website and to use some of its features.
Because these cookies are strictly necessary to deliver the website, refuseing them will have impact how our site functions. You always can block or delete cookies by changing your browser settings and force blocking all cookies on this website. But this will always prompt you to accept/refuse cookies when revisiting our site.
We fully respect if you want to refuse cookies but to avoid asking you again and again kindly allow us to store a cookie for that. You are free to opt out any time or opt in for other cookies to get a better experience. If you refuse cookies we will remove all set cookies in our domain.
We provide you with a list of stored cookies on your computer in our domain so you can check what we stored. Due to security reasons we are not able to show or modify cookies from other domains. You can check these in your browser security settings.
These cookies collect information that is used either in aggregate form to help us understand how our website is being used or how effective our marketing campaigns are, or to help us customize our website and application for you in order to enhance your experience.
If you do not want that we track your visit to our site you can disable tracking in your browser here:
We also use different external services like Google Webfonts, Google Maps, and external Video providers. Since these providers may collect personal data like your IP address we allow you to block them here. Please be aware that this might heavily reduce the functionality and appearance of our site. Changes will take effect once you reload the page.
Google Webfont Settings:
Google Map Settings:
Google reCaptcha Settings:
Vimeo and Youtube video embeds:
You can read about our cookies and privacy settings in detail on our Privacy Policy Page.
Privacy policy
