This is description of this part:
Left eyepiece prism for the microscope heads used on Olympus BH-2 / IMT-2 microscopes.
This is the prism that is mounted inside the head on the left eyepiece tube. The metal casting - the one with the eyepiece tube that the prism holder is attached to - carries the number AB0303.
This particular prism was removed from an Olympus BH2-BI30 binocular head, but it should also fit, among others, the following microscope heads with eyepiece tubes for eyepieces of 23.2 mm diameter:
- Olympus BH2-BI30
- Olympus BH2-TR30
- Olympus BH2-TBI
- Olympus BH2-TTR
- Olympus BH2-TET
Before you decide to use it to repair a head other than the one it was removed from, I recommend checking it first with specialists on forums or groups devoted to Olympus microscopes.
The prism shown here sits in its original holder, and the whole assembly is attached to the left eyepiece tube (casting AB0303) - and that is exactly what I am offering, as a complete unit.
This prism is not a spare part for the microscope itself. It is a repair part for an Olympus microscope head - and that head can sit on various microscopes, even on instruments from manufacturers other than Olympus. The most important microscopes this head is most often used with are listed in the "compatibility" section, but this is by no means a complete list.
The irreplaceable Carl Hunsinger has written an excellent service manual for the BH2-BI30 microscope head (https://www.alanwood.net/downloads/olympus-bh2-bi30-binocular-head-repair.pdf) and for the BH2-TR30 (https://www.alanwood.net/downloads/olympus-bh2-tr30-trinocular-head-repair-manual.pdf).
Here are the microscope models in which the heads this prism fits are most often used:
- Olympus BH-2 BHS
- Olympus BH-2 BHT
- Olympus BH-2 BHTU
- Olympus IMT-2
A note on the eyepiece tube diameter: the mounting diameter for the eyepieces is 23.2 mm, but some sources state 23 mm or 23.5 mm - that is a rounded measurement, and it is still one and the same tube.
What is this part needed for?
- this prism serves as a replacement part if the prism in your Olympus microscope head is damaged or of very poor quality
