David P. Hamblen
Eastman Kodak Company
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Featured researches published by David P. Hamblen.
Optics Letters | 1994
David P. Hamblen
A gradial zone lens has the diffractive component within the bulk lens rather than as a surface-relief profile. It is constructed by spin molding annular zones from microliter volumes of monomers injected into a rotating mold. Plastic lenses have micrometer width zones with dimensions that give a phase difference of modulo 2pi. A gradial lens made with flat surfaces shows a series of foci similar to those of a radially blazed grating; however, when zones are placed within a plano-convex lens, there is an additive contribution from both refractive and diffractive focusing.
Applied Optics | 1995
David P. Hamblen; Michael R Jones
A technique is described for measuring spherical and aspherical lens curvature independent of surface contact or dependence on surface smoothness. The shadow of a lens profile is projected onto a CCD pixel array, and its silhouette edge-traced by computer video-image analysis. Nonlinear regression analysis, with correction for axial tilt, calculates lens curvature.
Applied Optics | 1994
David P. Hamblen
Miniature aspheric and anamorphic plastic lenses are built from liquid droplets suspended on circular or elliptical-shaped pedestals. Refractive-index gradients are formed by the flow of premixed monomer volumes through a central conduit by the use of computer-controlled syringe pumps.
Archive | 1976
David P. Hamblen; Clyde Pershing Glover; Sang Hyung Kim
Archive | 1975
David P. Hamblen
Archive | 1991
David P. Hamblen; Sharma Ravi
Archive | 1995
David P. Hamblen
Archive | 1990
David P. Hamblen
Archive | 1991
David P. Hamblen
Archive | 1996
David P. Hamblen