Products Information

Products Information

02/08/2020

Optical lens basics (I)

Optical lens is an indispensable component in the machine vision system.  It directly affects the quality of the imaging. It affects the implementation and effect of […]
01/05/2018

What happens when you focus lenses from infinity to shorter distances?

To focus on shorter distances, s-mount lenses have to be “unscrewed” . On first glance this seems to be very different from larger Lenses like C- […]
05/18/2017

What’s the relationship between the main features of a lens?

We describe here the (yes, complicated) relationships between : Focal Length F-Number (=F#) Entry Pupil Exit Pupil Viewing Angle Chief Ray Angle Image Circle Object side […]
08/23/2016

About the Sense and Nonsense of Resolution

Resolution What is it in general? Resolution describes in general the ability of a “system” to provide “details”. Systems can be anything, a thermometer , a […]
08/22/2016

Why Megapixel? Lenses don’t have a Pixel-Structure after all!

Some centuries ago, people noticed with some surprise, that in a dark room sometimes an (upside down) image of the environment is projected across a small […]
10/01/2014

Can I increase the DOF by changing the focal length, if FOV and brightness are constant?

Per DefinitionDOF := Far Point – Near Point. The formulas for these are really complicated and contain several times the focal length. Surprisingly, despite the formulas […]
07/10/2013

Little siblings: s-Mount lenses as replacement for c-mount lenses

If we want to replace c-mount lenses by s-mount lenses it begs the question …Can s-mount Lenses replace c-mount lenses in general? Of course lenses should […]
07/04/2013

Comparison: c-mount lenses vs. s-mount lenses (M12x0.5)

Feature c-mount s-mount (M12x0.5) Standardization + – Thread 1″ 32 TPI M12x0.5 Size o ++ manual iris + generally not IR-Cut filter in camera in general […]
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