Nikon double aspheric lenses. By incorporating the latest double aspherical technology into Nikon DAS, Nikon is able to achieve the best optical performance among stock lenses available today. By incorporating the latest double aspheric technology into Nikon Lite DAS, Nikon is able to achieve the best optical performance among stock lenses available today. Double asphericity is not a new concept. Oct 22, 2024 ยท The double aspheric technology of Nikon Lite DAS gives an outstanding optical performance – unwanted astigmatism is reduced compared to a conventional aspheric design. Double-aspherical design uses two independent aspherical surfaces. PD basically means how much left or right the lenses in the frame will need to be adjusted so your Rx is viewable properly. This provides sharp and comfortable vision even at the edges of the lenses, which is not provided by spherical and aspherical lenses. However,Nikon Seemax brings double aspheric techology to a new level. It offers improved optical performance over conventional aspheric lenses for astigmatic prescriptions. Lenses won’t be cut so the center is in the frame center (unless that’s where your eye rests). . Double aspherical design enables a further reduction in unwanted astigmatism compared to aspheric design. SeeMax incorporates an extra 6 aspherical axes into the back of the lens, allowing optical performance to be maximized at every gaze angle. nweim lgzxwm hvlzg yrjvkat rry bdchl aga jpt bbaops nltpa