Mikopeiliin

Mikopeiliin is a Finnish term that translates to "microscope mirror." It refers to a component often found in older or simpler microscope designs, primarily used to reflect light onto the specimen being viewed. Unlike modern microscopes that typically incorporate a built-in light source and condenser system, older microscopes relied on an external light source, such as a lamp or even a window. The mikopeiliin would then be positioned beneath the stage to direct this ambient light upwards through the specimen and into the objective lens.

These mirrors are usually made of polished metal, often silvered glass, and are typically mounted on an adjustable arm. This adjustability allows the user to change the angle of the mirror, thereby controlling the direction and intensity of the light. By tilting the mikopeiliin, one could achieve optimal illumination for different types of specimens and magnifications. A concave side is often present, which can concentrate light and provide brighter illumination, while a flat side offers less intense, more diffused light. The use of a mikopeiliin requires careful manipulation to ensure the light source is positioned correctly and directed efficiently. While less common in contemporary microscopy due to integrated illumination systems, the mikopeiliin represents an important historical step in the development of optical instruments.