SINGLE APLANATIC HOMOGENEOUS REFRACTING WAVE-GUIDE LENSES WITHOUT FIELD CURVATURE

Wave analysis of the field curvature of single aplanatic homogeneous refracting planar waveguide lenses has been carried out. It is shown that at a sufficiently high value of the relative refractive index there is an optimal lens thickness, which leads to the absence of field curvature in a certain range of angles of incidence of the input beam. Numerical calculations carried out for the lens with an f-number of 4 and a relative refractive index of 1.050 show that field curvature is absent in the range of angles of +/-4-degrees for a lens thickness of 2.05 mm.