We at IODA can make aspherical lenses “on demand” thanks to advanced optical calculation programs and a complete line of Free Form extension supplied by OptoTech, a German company leader in the sector of numerical control machines for the production of lenses.
The more complex aspherical profile can eliminate spherical aberration and reduce other optical aberrations compared to simple (constant radius) lenses, so their use can reduce the number of lenses needed in a system, making it lighter and smaller.
The surface of IODA aspherical lenses can follow an elliptical, parabolic, hyperbolic curve or follow a mathematical function whose coefficients can be customized and adapted to the specific light source to obtain the maximum yield and homogeneity of the projected light.
Thanks to the cooperation with the University of Padova, IODA has created a new software called “Ray Tracing” which allows to calculate with great precision the vision ray and therefore calculate the ideal aspheric correction for any application.
In the lighting field aspherical lenses are normally used as the first element near the light source to concentrate the radiation (also called collimating lenses), as they are able to converge also the rays that affect them very marginally. Ultimately aspherical lenses contribute to a greater light or signal transfer if used specifically as entry lenses placed in front of a source.