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Dive into the research topics where David P. Hamblen is active.

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Featured researches published by David P. Hamblen.


Optics Letters | 1994

Diffractive optics: the gradial zone lens

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

Lens Curvature Measurements by Shadow Projection Profilometry

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

OPTICAL ACTIVITIES IN INDUSTRY Miniature aspheric lenses with spherical index gradients

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

Device for determining ionic activity of components of liquid drops

David P. Hamblen; Clyde Pershing Glover; Sang Hyung Kim


Archive | 1975

Method for making a plastic optical element having a gradient index of refraction

David P. Hamblen


Archive | 1991

Method and apparatus for manufacturing aspherically shaped small lenses

David P. Hamblen; Sharma Ravi


Archive | 1995

Gradial zone lens and method of fabrication

David P. Hamblen


Archive | 1990

Intraocular gradient-index lenses used in eye implantation

David P. Hamblen


Archive | 1991

GRADED INDEX OPTICAL ELEMENTS AND CATADIOPTRIC OPTICAL SYSTEMS

David P. Hamblen


Archive | 1996

Athermalized diffractive optical elements

David P. Hamblen

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David S. Ross

Rochester Institute of Technology

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