perfect measurement of optics
nano structures on a lens

perfect measurement of optics

Matthias Liedmann Matthias Liedmann

Matthias Liedmann

Oberfl?chenmesstechnik

发布日期: 2019年10月30日
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history meets the future

One of the biggest challenges in the marketing of surface metrology is the fact, that the most interesting and challenging objects are confidential. I found an exception - my personal inspection device. A simple magnification glass. A heirloom from my grand father who got it maybe as an gift from his employer Junker & Co. Very practical and constantly used for about 100 years:

personal gift from Junkers

In spite of the age of this magnification glass the measurement of the 3d topography with an reasonable resolution and accuracy for the evaluation of form deviations and micro structures is a real challenge and exceed the abilities of most measuring instruments.

1.) The measurement in a reasonable time needs a extreme fast measuring process:

The scanning speed allows the measurement of an

2.) Most white-light interferometers cannot provide the sub nanometer resolution on sloped measuring areas:

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