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Proceedings Paper

Calibrations and idiosyncrasies of microlensed CCD cameras
Author(s): John A. Penkethman
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Paper Abstract

Modern CCD cameras that are typically produced in high volume for consumer and machine vision applications can be used as precisely calibrated image sensors. New CCD chips with on-chip micro lens arrays, however, have some characteristics that limit design choices where precise illumination uniformity is required. The micro lenses cause vignetting and limit the angular aperture of each pixel. This paper measures vignetting and consequent shading for a typical micro lensed CCD chip. Nevertheless, when properly designed, camera system employed these advanced CCd chips can be precisely calibrated with respect to face plate irradiance.

Paper Details

Date Published: 5 October 1999
PDF: 9 pages
Proc. SPIE 3779, Current Developments in Optical Design and Optical Engineering VIII, (5 October 1999); doi: 10.1117/12.368214
Show Author Affiliations
John A. Penkethman, Electroglas, Inc. (United States)

Published in SPIE Proceedings Vol. 3779:
Current Developments in Optical Design and Optical Engineering VIII
Robert E. Fischer; Warren J. Smith, Editor(s)

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