Brightfield:
The simplest of all the optical microscopy illumination techniques. Sample illumination is transmitted (i.e., illuminated from below and observed from above) white light and contrast in the sample is caused by absorbance of some of the transmitted light in dense areas of the sample. Brightfield microscopy is the simplest of a range of techniques used for illumination of samples in light microscopes and its simplicity makes it a popular technique. The typical appearance of a brightfield microscopy image is a dark sample on a bright background.
Polarizing Light:
A type of optical microscopy techniques involving polarized light. Simple techniques include illumination of the sample with polarized light. Directly transmitted light can, optionally, be blocked with a polarizer orientated at 90° degrees to the illumination. More complex microscopy techniques which take advantage of polarized light include differential interference contrast microscopy and interference reflection microscopy.
The ML9200L & ML9300L Series Polarizing Microscope with large stable microscope base and limb with graduated coaxial coarse and fine focusing (with safety stop), rack and pinion focusing condenser mount, equipped with strain free condenser and strain free objectives with pre-centered transmitted Koehler illuminator with LED lamp with variable intensity control Meiji manufactures these microscopes for most applications in Geology, Petrology, Mineralogy, Toxicology, Chemistry, Pharmaceutical, Medicine, Pulp/Paper, Atmospheric pollution, Ceramics Technology, Forensic Medicine, etc. This series is the most suited in generating interference figures and in mineralogy in the scientific study of crystal structure and physical (including optical) properties of minerals. Specific studies include process of mineral origin and formation, classification of minerals, their geographic distribution as well as their utilization.