- The Light microscope.
- They use a number of lenses to produce an image that can be viewed directly at the eyepieces.
- Light passes from a bulb under the stage, through a condenser lens, then through the specimen.
- The beam of light is focused through the objective lens, then through the eyepiece lens.
- To view specimens at different magnifications, light microscopes have a number of objective lenses that can be rotated into position.
- The x100 objective lens is an oil immersion lens.