Mr. John A. Penkethman Profile

John A. Penkethman

Senior Staff Systems Engineer

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Author

Publications (5)

Proceedings Article | 5 October 1999 Paper

Calibrations and idiosyncrasies of microlensed CCD cameras

John Penkethman

Proceedings Volume 3779, (1999) https://doi.org/10.1117/12.368214

KEYWORDS: Imaging systems, Cameras, Calibration, Lamps, CCD cameras, Machine vision, Vignetting, Charge-coupled devices, CCD image sensors, Frame grabbers

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Proceedings Article | 23 August 1996 Paper

Optomechanical tolerancing by means of system modeling with affine transformations

John Penkethman

Proceedings Volume 2774, (1996) https://doi.org/10.1117/12.246656

KEYWORDS: Optical imaging, Optical components, Mirrors, Lithium, Imaging systems, Lenses, Collimation, Paraxial approximations, Tolerancing, Systems modeling

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Proceedings Article | 15 September 1995 Paper

Matrix method for optomechanical tolerancing of finite conjugate optical imaging systems

John Penkethman

Proceedings Volume 2540, (1995) https://doi.org/10.1117/12.219531

KEYWORDS: Optical imaging, Optical components, Mirrors, Prisms, Radon, Imaging systems, Sensors, Silicon, Tolerancing, Information operations

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Proceedings Article | 30 September 1994 Paper

Family of fiber based confocal and quasi-confocal microprobes

John Penkethman

Proceedings Volume 2263, (1994) https://doi.org/10.1117/12.188017

KEYWORDS: Confocal microscopy, Optical fibers, Mirrors, Scattering, Sensors, Light scattering, Head, Semiconducting wafers, Signal detection, Light

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Proceedings Article | 16 September 1993 Paper

Dual magnification video microscope for machine vision

John Penkethman, Stephen Motta

Proceedings Volume 1998, (1993) https://doi.org/10.1117/12.156622

KEYWORDS: Optomechanical design, Microscopes, Prisms, Beam splitters, Lithium, Lenses, Silicon, Optical benches, Optical alignment, Information operations

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