NT-MDT NTEGRA Spectra Instruction Manual page 11

Chapter 2. Design
Fig. 2-4 XY Scanning Optical Exchangeable Mount
1 – measuring head seats; 2 – measuring head positioning screws;
3 – XY positioning device micrometer screws; 4 – sample stage;
5 – spring clips; 6 – scanning platform
The scanning platform 6 serves to move the investigated sample in the process of XY
scanning. It provides scanning in the wide range, high positioning precision and high
linearity of the sample displacement. Linearity of scanning with this platform is better than
that of scanning with the measuring head. Furthermore, during SNOM measurements, it
allows to keep the area under investigation within the lens focus.
The lens is mounted into the "cup" (Fig. 2-5) inside the exchangeable mount. The "cup" is
designed to approach the lens to the sample with the manual approach knob
(see 2 on Fig. 2-3). As well, it is equipped with a piezoelectric element for fine focusing
the lens on the sample and for Z-scanning.
Fig. 2-5. Inside "cup"
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