Day/Night is a popular term for lenses and other products which are optimized for operation in both daylight and low-light conditions using an infrared illumination source. Such products require specialized design and manufacturing techniques to provide good image quality under this broad range of spectral conditions. Using a Day/Night lens under these circumstances can improve focus, brightness and resolution over conventional lenses. SUNEX also offers specialized Day/Night filter products which can further optimize your application.
Please contact OPTICS CONCEPT support team for details for more information.