23 August 2005 Precision centration measurements on injection-molded lenses for digital imaging
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We present a technique for measuring decenter on small-aperture injection-molded optics that combines a simple microscope measurement with basic geometric calculations. A system model comprising both the microscope and the test lens is used to define specific correction factors for calibration. The technique results in repeatable centration measurement accuracy under 3 um, and the direction of the individual surface shifts is also obtained. The level of accuracy achieved has been quantified by comparing point-spread-function measurements and simulations on VGA-quality singlets.
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Craig Olson, Craig Olson, } "Precision centration measurements on injection-molded lenses for digital imaging", Proc. SPIE 5872, Advancements in Polymer Optics Design, Fabrication, and Materials, 587206 (23 August 2005); doi: 10.1117/12.613190; https://doi.org/10.1117/12.613190

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