Home Products Silicon Optics Silicon Optics with Large Sag

Silicon Optics with Large Sag

High refractive index (n=3.4), hard material resistance, low temperature sensitivity, and low density (2.329 g/cm³).

Lens sag value as large as 4 mm (4000 µm) at exit angle of 0° ~ 80°, and maximizes the numerical aperture (NA).

Deep-sag decentered lenses, blazed gratings, chirped arrays or integrated prisms.

Silicon Optics with Large Sag

Key Specifications

  • Optics manufactured with silicon material, fully taking advantage of the intrinsic characteristics of silicon material, such as high refractive index (n=3.4), hard material resistance, low temperature sensitivity, and low density (2.329 g/cm3).
  • By Focuslight’s unique wafer-level simultaneous structuring technology, the lens sag can achieve as large as 4mm (4000µm) at an exit angle of 0° ~ 80° on silicon optic, which maximizes the numerical aperture (NA) that a silicon optics could achieve.
  • Enabling products that have been hard or impossible to be produced by classical lithographical technologies, such as deep-sag decentered lenses, blazed gratings, chirped arrays or integrated prisms.
  • A precise and optimized design of a proper coating recipe for silicon optics and production process of optical coating can ensure good product performance and long-term operational reliability. AR coating available up to R<0.2% and bandwidth up to 1200 nm.
  • Scalable and cost-effective production technology suitable for very high quantities, making the product affordable for IoT, biosensing, smart terminals, etc.


Symmetric and Asymmetric Microstructures Processed by Focuslight

Privacy Preference Center
Cookies and other similar technologies ("cookies") are very important in order for the site to function properly and provide a seamless and customized experience for visitors. Zoom supports your use of our site through cookies. We also allow you to customize the way you use our website through cookies, provide you with enhanced functions, and continuously improve the performance of our website. If you have enabled the following targeted cookies, we may allow third-party advertisers to use the cookies they set on our site to display advertising content related to you on our website or products according to your account type or login status< br> You can accept or reject all cookies except "absolutely necessary cookies", or customize the cookie settings below. You can change your cookie settings at any time. Some "absolutely necessary cookies" may transfer personal data to the United States. To learn more about how Zoom handles personal data, please visit ourPrivacy Statement
After the button labeled "Orientation" below is switched off, California residents can exercise the right to "choose not to sell personal information".
Accept Cookie
Manage Permission Preferences
  • +Target Location
    Our advertising partners can set these cookies through our site. These cookies can be used by advertising partners to track your use of our website according to their own policies, and can combine the corresponding information with other information, and then display relevant advertisements to you on our site and other sites. If you do not allow the use of these cookies, you will not see personalized ads on the Zoom website or products.
  • +Function
    These cookie support websites provide enhanced and customized features. Cookies may be set by us or by third-party providers who add services to our web pages. If you do not allow these cookies, some or all of these services may not work properly.
  • +Performance
    These cookies enable us to calculate traffic and traffic sources so that we can evaluate and improve the performance of our website. These cookies can help us understand which pages are the most popular and which pages are the least popular, and understand how visitors browse the website. If you do not allow these cookies, we will not know when you have visited our website, nor can we monitor website performance.
  • +Absolutely Necessary

    Always Active

    These cookies are absolutely necessary for the operation of the website and cannot be closed in our system. Generally, these cookies will only be set when you make a near service request behavior (for example, setting your privacy preferences, logging in, or filling out a form). You can set your browser to block or remind you of these cookies, but some parts of the website may not work.
Confirm My Choice