For optical systems special anti-reflection coatings can be designed which reduce the reflectance for a high number of glasses at normal and non-normal incidence (multi- configuration). In that way, all lenses of a lens system can be coated with the same coating design. The results for single wavelength (laser) applications as well as for broadband applications will be discussed. Furthermore, the application of these coatings in several lens designs will be demonstrated. For this, transmissions are calculated in an improved optical lens design program (WinLens). The transmission performance of complex lens systems is listed surface by surface and is graphically displayed for the optical axis and for all chief rays and therefore for all main angles of incidence. Experience about these new coating designs combined with new features in an optical design software provides new aspects about `re-design to cost' for the lens designer.