Ealing offers a wide variety of lenses that operate from the UV (300nm) to the far MidIR (7um). Many lenses are available coated or uncoated. Choosing which lens is best suited for a particular application is dependent on a number of factors including the wavelength of operation, focal length, diameter and construction (material shape and form).  Ealing can provide custom designed optics for OEM applications so please contact us with the details of your custom requirements.