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PriorL ux POL

 

 

7

 

8. Cleaning 

Objectives 

It is critical that the front lens of each objective is kept clean and free of contamination.  Any 

dust or dried immersion oil will seriously affect the image quality attainable with that 

objective.  If contamination is suspected then the easiest way to confirm this is by removing 

the objective lens and examining the front lens using the eyepiece.  To do this take out one 

of the eyepieces, turn it around so that you are looking the wrong way through it and move 

it towards the front of the objective until you can focus on the front lens.  This will clearly 

show any contamination.  To remove dirt and oil a lens cloth, lens tissue or cotton bud 

dampened with industrial alcohol can be used.  A spiral motion starting from the centre of 

the lens moving to the outside is the best way of achieving a thoroughly clean surface 

 

9. Centring 

the 

Objectives 

The lowest power objective is mounted in a fixed position and therefore centration of this  

particular lens is not user adjustable. 

 

All other powers are mounted in positions with adjustment screws fitted into the nosepiece 

above to enable the end user to make adjustments to the alignment of the objective lens.  To 

re-align an objective which is obviously misaligned with the centre of rotation, as indicated by 

the crossline in the eyepiece the following procedure should be followed. 

Insert the two supplied centring keys into the adjustment screw sockets above the objective 

in the knurled ring of the nosepiece.  Rotate the stage and observe that part of the specimen 

upon which the specimen appears to rotate.  If necessary move the specimen until the centre 

of rotation coincides with a feature in the specimen that is easily recognised. 

 

Now by means of the centring screws move the feature until it coincides with the      

intersection of the crossline in the eyepiece.  The stage must remain stationary while the 

objective is being centred.  Once the identifiable feature has been aligned with the crossline 

rotate the stage to check that the axis of rotation is now coincident with the intersection of 

the crossline. 

 

Summary of Contents for Lux POL

Page 1: ...Operating Instructions PriorLux POL Advanced Polarising Microscope...

Page 2: ......

Page 3: ...tion 6 8 Cleaning Objectives 7 9 Centring the Objectives 7 10 Attaching the Mechanical XY Stage 8 11 Observations Between Crossed Polars 8 12 Conoscopic Observations 8 13 Bertrand Lens 9 14 Use of Com...

Page 4: ...nting of a video or digital camera system 2 Unpacking The PriorLux POL is shipped in protective bags within a pre formed container Each component should be carefully unpacked and checked cutting rathe...

Page 5: ...1 degree increments Focusing Mechanism Co axial fine and coarse adjustment with tension control and focus stop Viewing Head Interpupillary distance 55 75mm Kohler Illumination 12V 30W halogen lamp wit...

Page 6: ...4 Prior Scientific 4 Component Parts...

Page 7: ...hing on the power reduce the lamp intensity control to its minimum setting After switching on the intensity should be increased to a comfortable level This procedure should be reversed before switchin...

Page 8: ...ld to attain perfect centration Figure 1 Pictures C D E Fully open the field diaphragm F Fully open the condenser diaphragm and then slowly close it until you see the contrast within the image increas...

Page 9: ...erefore centration of this particular lens is not user adjustable All other powers are mounted in positions with adjustment screws fitted into the nosepiece above to enable the end user to make adjust...

Page 10: ...cally when the back focal plane of the objective is observed using the Bertrand lens In petrology birefringent specimens can produce interference patterns in this plane that are of considerable import...

Page 11: ...rs will be observed The retardation caused by the specimen can be assessed by its compensation of an order of colour of the wedge The Prior quartz wedges are mounted length fast and when the interfere...

Page 12: ...on of the selected video or digital camera are supplied with the camera Assembly Video Cameras A Screw the c mount adapter part no WXCM1 1 0x or WXCM050 0 5x to the video camera B Loosen the knurled s...

Page 13: ...PriorLux POL 11...

Page 14: ...its back to gain access to the base plate D Loosen the screw which holds the lamp cover to the base plate E Open the lamp cover to expose the bulb holder F Remove the old bulb and replace it with the...

Page 15: ...PriorLux POL 13 17 Fuse Location The fuse is located on the base towards the front right corner of the instrument 18 Spare Parts W3257 Spare bulb 12V 30W Halogen W335 Fuse T1 25A...

Page 16: ...bu lba cces sdoor onthe under s i de o ft he i n s t rument Warn ing H i ghvo l t a ge d i s connec tpowersupp l ybef o rechang ingthe bu lb This symbol is located next to the bulb access door on the...

Page 17: ...se part 1 General requirements EN61326 1997 A1 A2 A3 Electrical equipment for measurement control and laboratory use EMC requirements Class B emmisions EN61326 1997 A1 A2 A3 Electrical equipment for m...

Page 18: ...16 Prior Scientific Specification subject to change without notification Part No W2628 Issue B 10 05...

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