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OSF-4-BA-e-1510

 

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5.6  Using eye cups / High Eye Point eyepieces 

The  eye  cups  supplied  with  the  microscope  can  basically  be  used  at  all  times,  as 
they  screen  out  intrusive  light,  which  is  reflected  from  light  sources  from  the 
environment onto the eyepiece, and the result is better image quality. 

But  primarily,  if  eyepieces  with  a  high  eye  point  (particularly  suitable  for  those  who 
wear glasses) are used, then it may also be useful for users who don’t wear glasses, 
to fit the eye cups to the eyepieces. 

These  special  eyepieces  are  also  called  High  Eye  Point  eyepieces.  They  can  be 
identified  by  the  glasses  symbol  on  the  side.  They  are  also  marked  in  the  item 
description by an additional “H” (example: HSWF 10x Ø 23 mm). 

When fitting the eye cups, make sure that the dioptre setting is not moved. We would 
therefore  advise  that  you  hold  the  dioptre  adjustment  ring  on  an  eyepiece  with  one 
hand while you fit the eye cup with the other. 

Before  using  the  microscope,  users  who  wear  glasses  must  remove  the  eye  cups, 
which you may find on High Eye Point eyepieces. 

As  the  eye  cups  are  made  of  rubber,  you  must  be  aware  that  when  you  are  using 
them,  they  can  become  slightly  dirty  through  grease  residues.  In  order  to  maintain 
hygiene, we would therefore recommend that you clean the eye cups regularly (e.g. 
with a damp cloth). 

   Eye cups 

   High Eye Point eyepiece 

(identified by the glasses symbol) 

Summary of Contents for OSF-4

Page 1: ...mbH Ziegelei 1 D 72336 Balingen E mail info kern sohn com Tel 49 0 7433 9933 0 Fax 49 0 7433 9933 149 Internet www kern sohn com User instructions Stereo microscope KERN OSF 4 OSF 430 OSF 431 OSF 434...

Page 2: ......

Page 3: ...ssembly 9 5 Operation and functionality 11 5 1 Getting started 11 5 2 Adjusting the interpupillary distance 11 5 3 Adjusting the magnification 11 5 4 Dioptre adjustment and focussing 12 5 5 Adjusting...

Page 4: ...o the electrical parts in the base of the device must not be tampered with as in this area there is an additional risk of triggering an electric shock 1 2 Notes on the electrical system Before connect...

Page 5: ...older must not be rotated back too far If you do this there is a risk that the microscope could tip over When the microscope is not being used you should fit the objective cap and cover the microscope...

Page 6: ...these are highly flammable substances You must therefore keep it away from naked flames and electrical devices which can be switched on and off and only use it in well ventilated rooms However organi...

Page 7: ...OSF 4 BA e 1510 6 2 Nomenclature Using the OSF 430 as an example...

Page 8: ...7 OSF 4 BA e 1510 Special features of OSF 434 OSF 435 The focus dial has a coarse adjustment knob and a fine adjustment knob...

Page 9: ...d of view mm Objective Stand Illumination OSF 430 Binocular WF 10x 20 mm 20 1x 3x mechanical 1W LED reflected light 0 21W LED transmitted light OSF 431 Binocular WF 10x 20 mm 20 2x 4x mechanical 1W LE...

Page 10: ...epieces are already fitted in the tube You just need to remove the protective film which covers them When doing this make sure that you do not touch the optical lenses with your fingers In general you...

Page 11: ...OSF 4 BA e 1510 10 Assembled stereo microscope...

Page 12: ...e the gap between the two eyepieces must be re adjusted While you are looking through the eyepieces use one hand to hold the righthand or lefthand prism housing firmly By rotating outwards or inwards...

Page 13: ...k through the righthand eyepiece without dioptre adjustment ring with the right eye and bring the object into focus by using the focus control dials 4 Now set the largest magnification 5 Once again st...

Page 14: ...ng observed should collide Torque of the focus wheels OSF 434 OSF 435 You can adjust the torque of the focus wheels by turning the ring which is fitted along the axis of the lefthand focus wheel in a...

Page 15: ...ed by the glasses symbol on the side They are also marked in the item description by an additional H example HSWF 10x 23 mm When fitting the eye cups make sure that the dioptre setting is not moved We...

Page 16: ...application then it often makes sense to fit an external lighting unit to overcome this problem The lighting units which are suitable for devices of the OSF 4 series are goose neck lighting units see...

Page 17: ...7 Features Model outfit Kern model Order number OSF 430 OSF 431 OSF 434 OSF 435 Eyepieces WF 5x 16 2 mm OZB A4101 WF 10x 20 mm OZB A4102 WF 15x 15 mm OZB A4103 WF 20x 10 mm OZB A4104 Stand mechanical...

Page 18: ...ufficient The wrong bulb has been used The input voltage is too low Optical unit Problem Possible causes You can see two images The interpupillary distance is not set correctly The magnifications of t...

Page 19: ...materials which you can dispose of at your local recycling centre Disposal of the storage box and device must be carried out by the operator in accordance with all national or regional laws in force...

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