Calibration standards, object micrometers

Calibration Target Micro V2

045-200200-01 Kalibrierplatte Mikro V2 1024

Optical calibration and resolution testing are critical metrics in understanding and optimizing any optical system. 

Calibration Target Micro V2 is unique in that it combines very useful resolution data, combined with ultra-high definition micro features, together enabling efficient and accurate optimization of any optical setup. 

  • Ultra-high definition micro features, compatible to the most demanding optical calibration requirements

  • Four unique quadrants combining resolution targets to measurement scales

  • Supplied in a dedicated padded storage case

Item No. 045-200200

Item No. 045-200200-DKD (with DKD-certificate)

Download (PDF)

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Calibration Target Micro V2 contains defined structures in different shapes and sizes for easy system calibration and distortion detection.

  1. 10 lp/mm to 1100 lp/mm

  2. Ø20 μm dot matrix 40x40 dots,100 μm grid

  3. Contrast and Siemens structure

  4. Ø10 μm dot matrix 40x40 dots, 50 μm grid

  5. Scale with steps down to 10 μm 

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Calibration Target Micro with honing angle

Calibration Target Micro mit Honwinkel

Calibration Target Micro with honing angle

In contrast to the Target Micro V1, the Calibration Target Mico with honing angle in the 4th quadrant contains a 30° honing angle incl. certificate.


The target contains the following defined structures:

1. 10 lp/mm to 1000 lp/mm

2. Ø20 μm dot matrix 40x40 dots, 100 μm grid

3. positive, negative dots and Siemens star

4. honing angle 30° with certificate

5. scale with steps up to 10 μm

Item No. 045-200217

Datasheet (PDF)

Particle Standard Target

Partikelnormal / klein

Particle Standard Target allow the calibration of measurement functions in microscopes through objects in different forms and sizes or of resolution of an optical system measured in Line Pairs per mm.

The Target allows the calibration of measurement functions in microscopes, to analyze particles and measured. A field of objects in different forms and sizes allow the user to check: rectangles, ellipsis, circles, rings and even fibre-shaped objects. To determine optical distortions there are three different sized arrays of cross-targets. The smallest Object is as small as 5μm.

For the calibration of the resolution (magnification) two scale bars in X and Y are applied in a corner of the target.

Item No. 043-102302-72

Item No. 043-102302-73  (with DKD-certificate)

Datasheet (PDF)

Stage micrometer

Objektmikrometer - png

Stage micrometer

The stage micrometer is a helpfull tool for calibration purposes.

- 50 mm glass scale in 0.1 mm and 0.01 mm
- Calibration of measurement software

The stage micrometer is also available with DKD Certification.

Item No. 010-310345

Item No. 010-310345-2  (with DKD-certificate)

Datasheet (PDF)

Image Quality Features


The resolution of an optical system indicates the discernibility of two minute structures that can still be perceived separately. The resolution of optical instruments is limited by diffraction. The typical
specification is made in line pairs per mm (Lp/mm). The dependence of the resolution from the contrast describes the modulation transfer function.


Modulation Transfer Function (MTF)

MTF (also called contrast transfer function) describes the comparison of the contrast of the edges of a (real) object with the contrast of its image at a certain resolution (MTF = image contrast/object contrast). There will always be some contrast loss.


The contrast describes the relationship between light and dark areas of an image, indicated in per cent (%).


Depth of Field

The depth of field (DOF), often erroneously dubbed “field of depth”) describes the expanse of the focussed area (within the object space) in front of and behind the optimal focus level. The smaller the aperture (i.e. the larger the f-number) the greater the depth of field area.
The hyperfocal distance is a special instance in which the depth of field area extends to infinity.
In case of telecentric lenses, the telecentric area is essentially the depth of field area.



The distortion (or visual distortion) is a geometric image defect (aberration) of lens systems. It leads to different magnifications when the distance to the optical path of the system increases and creates the image of straight lines that do not cross the centre of the image to be reproduced in a bent way.

Decreasing magnifications (reductions) with respect to the image field edge are called barrel-shaped distortions (fish-eye effect) with an increasing pulvinate distortion. The distortion is generally indicated in per cent (%).

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