How To Add Rheinberg Illumination to an Olympus BH2 Microscope
Olympus provided no way to add Rheinberg Illumination to the BH2 microscopes. The BH2-DFR Darkfield / Rheinberg accessory kit from the Empire of Dirt Workshop provides an inexpensive method to add Rheinberg to a BH2.
Click here for a PDF describing the BH2-DRF Darkfield / Rheinberg Accessory kit for the BH2.
Click here for a ZIP file containing the various STL files needed to make the BH2-DRF.
A Few Practical Considerations
- Be sure to always run the condenser diaphragm wide open when using Rheinberg Illumination.
- You may find it helpful to stack two or three pieces of the same color to make the central filter or annular ring, to get the desired depth of color from the filter.
- If you wish to decrease the intensity of the background, you can reduce the diameter of the central disk, but be careful. The size of the hole in the annular ring of the filter must be sized to keep the outer portion of the light cone outside the acceptance angle of the objective, regardless of the diameter of the central disk. This means if you wish to make the central disk smaller then the minimum diameter of the hole in the annular ring, you will need to place an opaque ring between the central disk and the annular ring.
- In general, the central filter should be much darker than the annular ring filter, to provide sharp contrast between the image and the background.