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Lens Articles

Tag Archive for: lens

lensfocus

Lenses and Pinholes: What Does “In Focus” Mean?

March 29, 2017
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11 Comments
Introduction In introductory physics, the optics unit often teaches about virtual and real images, focal lengths, indexes of refraction, etc. Some questions…
https://www.physicsforums.com/insights/wp-content/uploads/2017/03/lensfocus.png 135 240 stevendaryl https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png stevendaryl2017-03-29 19:42:142026-02-16 21:44:03Lenses and Pinholes: What Does “In Focus” Mean?
diffractiontheory

The Diffraction Limited Spot Size with Perfect Focusing

March 13, 2017
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12 Comments
Purpose The purpose of this Insights article is to give the reader a brief introduction to the principles behind diffraction-limited focusing. The reader…
https://www.physicsforums.com/insights/wp-content/uploads/2017/03/diffractiontheory.png 135 240 Charles Link https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png Charles Link2017-03-13 19:17:102024-08-17 10:37:05The Diffraction Limited Spot Size with Perfect Focusing

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