Nikon Vertical Illuminators

• UV
• fiber light
• short halogen (no irises; filter slots near dovetails)
• long halogen
  • (6V) version; chrome knob rotates brightfield-only beam splitter in/out
  • (12V) version with B/D slider; use DF also for diascopic

    Nikon Universal EPI Vertical Illuminator (12V)

    Polarizer can mitigate specular reflections and improve contrast.
    
    eBay item number: 234568312474
    Seller assumes all responsibility for this listing.
    Last updated on May 26, 2022 12:37:17 PDT View all revisions
    Item specifics
    Condition: Used
    Brand: Nikon
    Nikon Universal EPI Vertical Illuminator
    BF / DF, Polarizer Slider
    Includes Lamp Housing (No Bulb),
    For Optiphot + Labophot Microscopes.
    Tested!
    
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    Preparation

    
    Lamp centering
    1. fully PUSH B.F.
    2. turn power ON, set 6V
    3. fully open diaphragms
    4. Place ND filter on the stage; focus 10x objective on it
    5. remove eyepiece; focus lamp filament on objective exit pupil
    6. center filament on exit pupil; replace eyepiece
    Orient polarizer
    1. nearly focus 40x objective on ND filter
    2. insert analyzer
    3. remove eyepiece; rotate polarizer for dark cross image:
       
  • Pull D.F. for diascopic
  • see also polarizing filters
• M Plan 6V Illuminator
  
  
  
• Optiphot Universal EPI (infinity) illuminator and head   -   LV-UEPI manual