Photon Engineering FRED, Materials

Materials/Gradient Index Materials/Birefringent Materials Homogeneous materials may be specified from glass vendor catalogs (conventional and radiation-hardened Schott, Ohara, Hoya, Corning SA, Pilkington, and custom), from tabulated input of refractive indices (real and/or imaginary parts), from nd, vd pair (model glass on normal dispersion glass line) or from a user-defined BASIC dispersion equation. *FRED* supports the following gradient index (GRIN) material types: • Axial-radial (polynomial in axial and radial distances) • Selfoc™ (polynomial in radial distance from axis) • General polynomial • Luneberg • Maxwell • Spherical (polynomial in distance from a point) • Scripted GRIN (user-defined BASIC script) *FRED* supports birefringent and/or optically active materials that are sampled as a function of wavelength.	Birefringent material specification Color separation due to polarized birefringent materials
Selfoc lens as relay element