D. L. Shealy

Flux density for ray propagation in geometrical optics

D. Burkhard, D. L. Shealy, 1973 .

Specular aspheric surface to obtain a specified irradiance from discrete or continuous line source radiation: design.

Donald G. Burkhard, D. Burkhard, D. L. Shealy, 1975, Applied optics.

Imaging characteristics of a conical primary, aspheric secondary x-ray telescope.

D. Burkhard, D. L. Shealy, G. Strobel, 1982, Applied optics.

Simplified formula for the illuminance in an optical system.

D. Burkhard, D. L. Shealy, D G Burkhard, 1981, Applied optics.

Infrared Emission from a V‐Shaped Metal Groove Compared with That from a Flat Surface of the Same Metal

D. Burkhard, D. L. Shealy, S. Hurlock, 1969 .

Formula for the density of tangent rays over a caustic surface.

D. Burkhard, D. L. Shealy, 1982, Applied optics.

Imaging characteristics of a conical primary, aspheric secondary x-ray telescope.

D. Burkhard, D. L. Shealy, George L. Strobel, 1982, Applied optics.