UD 124 Universal Rotary Stage Operating manual
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Contents 1 Notes .................................................................................................................................2 2 System overview...............................................................................................................3 3 Application .......................................................................................................................4 4 Instructions for use............................................................................
1 Notes Operation! The instrument may be operated by trained personnel only who must be familiar with the possible dangers involved in microscopy and the relevant field of application. Dust! Dust and dirt can impair the performance of the instrument. Therefore, protect the instrument against these interferences as far as possible. Always use the dust cover if you do not intend to use the microscope for longer periods of time.
2 System overview 1 2 3 4 5 6 7 8 9 10 11 12 13 UD 124 universal rotary stage for Axiolab Pol UD condenser 0.6 pol für Axiolab Pol Achromat objective 5x/0.10 Pol segment Achromat objective 20x/0.30 Pol segment Achromat objective 50x/0.60 Pol segment for conoscopy Upper segments nD = 1.516; 1.556; 1.648 Lower segments nD = 1.516; 1.556; 1.648 Ball head screw driver SW 3 Pin wrench SW 1.
3 Application The three-axis universal rotary stage (FigFig. 1/1) is mounted on the rotary stage of the polarization microscope of the Axioplan Pol, Axioplan 2 Pol, Axiophot Pol und Axiophot 2 Pol microscopes. For the Axiolab Pol, the universal rotary stage is equipped with a special stage carrier (Fig. 1/13) and mounted directly on the stand in place of the rotary stage. Observation and measurement is generally possible in the orthoscopic and the conoscopic mode.
4 Instructions for use 4.1 Adaptation of universal rotary stage Axiolab Pol Axioplan Pol, Axioplan 2 Pol, Axiophot Pol, Axiophot 2 Pol Remove rotary stage in accordance with micro- Center scope manual. the rotary stage to the microscope in accordance with the manual, take out the reducing plate. Remove objectives. Remove the Pol objective and Pol condenser. Adjust the coarse drive to its upper limit stop.
4 Instructions for use 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 6 Vernier A2 Schmidt ruler Vernier A1 Clamping screw A5 Click stop mechanism A5 Pins for vertical adjustment of lower segment (4x) Arresting pin universal rotary stage Control for condenser height adjustment Vertical condenser stop Centering screw for condenser Dovetail for condenser Aperture diaphragm Condenser Click stop mechanism A2 Centering screw for condenser Clamping screw for condenser Clamping screw for u
4 Instructions for use 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Vernier A2 Schmidt ruler Vernier A1 Screw for mounting univ. rotary stage Click stop mechanism A5 Clamping screw for stage centering Rotary stage of microscope Clamping screw A5 Adjusting screw for stage centration Mounting screw for univ.
4 Instructions for use 4.2 Preparation of universal rotary stage 4.2.1 Positioning the sample Select the suitable segment pair (Fig. 1/6 and 7), The refractive indices of the sample and the segment pair should be almost identical. For quartz or feldspa crystals, for example, the segment pair featuring the refractive index nD = 1,556 should be selected, for pyroxen or amphibol crystals the one with the refractive index nD = 1,648. Insert the larger, lower segment (Fig.
4 Instructions for use 4.3 Application examples 4.3.2 Conoscopic work in linearly polarized light 4.3.1 Orthoscopic work in linearly polarized light Example 1: Measuring the angle 2 V of the optical axis of a biaxial crystal Center the selected grain in the crosslines. Switch in the 5x/0.13 objective (standard use). Adjust the iris diaphragms of the 20x/0.30 and 50x/0.60 objectives and the aperture diaphragm of the condenser (Fig.
4 Instructions for use 4.3.3 Working in circularly polarized light. The Axiolab Pol, Axioplan 2 Pol and Axiophot 2 Pol microscopes permit the universal rotary stage to be used also for work in circularly polarized light. For this, the circular polarizer D consisting of a polarizer and two /4 plates must be used. The polarizer and one of the /4 plates is used in the place of the standard polarizer. The second /4 plate is inserted in the compensator mount.
5 Modules 5.1 Universal rotary stage 5.2 Objectives 5.1.1 Sample Examinations using the universal rotary stage can only be performed with the newly computed Achromat objectives which are screwed into the objective nosepiece direct, without any adapter. The engraved magnification and aperture figures apply when used in conjunction with the segment pair nD = 1.556. The sample is inserted between glass segments (Fig. 1/6 and 7) and connected with them by the immersion fluid.
5 Modules 5.3 Condensers For the Axioplan Pol, Axioplan 2 Pol, Axiophot Pol and Axiophot 2 Pol microscopes, the UD 0.6 Pol condenser , Cat.No. 445460, is used. It is suitable for orthoscopic and conoscopic examinations. When working orthoscopically, the condenser aperture should be stopped down. For conoscopic work the condenser aperture must be fully open. With the LD 0.6 Pol condenser , Cat.No. 445311, a condenser of identical optical performance is available for the Axiolab Pol.
6 Maintenance For general information on care and maintenance, please refer to the operating instructions G 42-311, B 40-016 and B 40-042. Kindly also observe the following:: The universal rotary stage is a precision instru- ment and must therefore be protected against mechanical damage to ensure that settings and adjustments are not lost. Treat the segments with care (risk of scratching). Glycerin is recommended as an immersion agent due to it being water soluble.
7 Literature [1] Berek, M.: Mikroskopische Mineralbestimmung mit Hilfe der Universaldrehtischmethoden. Berlin: Bornträger 1924 [2] Burri, C.: Das Polarisationsmikroskop. Basel: Birkhäuser 1950 [3] Chudoba, K.: Die Feldspäte und ihre praktische Bestimmung Stuttgart: 1932 [4] Emmons, R. C.: The universal stage. Mem. geol. Soc. of Amer. 8 (1943) [5] Hallimond, A. F.: Universal stage methods. The mining magazine LXXXIII (1950) pp. 12-22 and 77-80 [6] Hofmann, J.
8 Wulff network for stereografic projections Fig. 5 Wulff network B 40 - 017 e / 12.
