Tips03a - CODE V Tips #3a for OPTI340 Les Foo...

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Proprietary 1 CODE V Tips #3a for OPTI340 Les Foo les@opticalres.com Optical Research Associates
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Proprietary 2 Lens Modules What is a Lens Module? Model the first-order characteristics of a lens assembly Focal Length Field Pupil locations Front focal distance Back focal distance Front, Rear Apertures Model third-order aberration characteristics of a lens assembly Chromatic Spherical Coma Astigmatism Distortion Petzval curvature Why use a Lens Module? Lens prescription unknown Test data available to define first-order charcteristics Measured Optical performance data available
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Proprietary 3 Defining a Lens Module Begin by inserting 5 surfaces before the image surface. Dummy surfaces inserted to simulate entrance pupil location within the lens. Surface 3 selected as the first surface of the Lens Module. Note: • Radii on S3, S4 do NOT affect first- order properties, but make the lens module picture look better • Thickness on S3 does NOT affect
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Tips03a - CODE V Tips #3a for OPTI340 Les Foo...

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