ISO 12233 chart

Beta 1693M 80 Laserafstandsmeter, multifunctioneel, 80 m, met Enkele afstandsmeting en Continue meting of minimale meting…

MTFtest

At first glance it might be a bit surprising that neither the focal length nor distance is part of the formula. But they are in fact included in the calculation, as they influence the magnification. For example the doubled distance corresponds to half the magnification.

Beta 1760TMC 600 - Infrarode warmtebeeld camera Compact. Warmtebeeldcamera voor het contacloos temperatuur meten, geschikt voor toepassing in de bouw,…

Laserliner Temperatuur- en hygrometer ClimaCheck voor metingen van 0 tot 50 graden. Klein en compacte digitale thermometer.…

Usaf1951 edmund optics

USAF-1951 test charts (also called USAF-1951 test targets) get their name from the designers and the design year: “United States Air Force 1951”. The targets are available in various finishes , for example chrome on glass.

Beta 1760/IR1000 is een digitale infrarood thermometer die kan meten van -50 tot 1000 graden. Ook zeer geschikt voor automotive.…

1951usafresolutiontestchart printable

Each element consists of three horizontal and three vertical bars. The camera is said to “resolve” a chart element, if the horizontal and the vertical bars can still be recognized as three distinc bars und don’t blur into one another.

How do you interpret this? Well, we need further information, namely the width of the bars. As expected, the width of the bars is well defined: the bar of  group “group” element “element” have the width

USAF1951 pdf

What is the corresponding image side resolution? If the total width of the sensor is M times larger than the total visible width of the object area (= Field Of View = FOV), then the image side resolution is by that factor M smaller than the object side resoluton!

The targets consist of “groups” of 6 “elements” each. The group numbers at the top of the group, the element numbers are located at the sides of the groups.