What are the structural optical parts and lighting parts of a microscope?
lighting part
Installed under the mirror table, including reflector and light collector.
(1) Reflector: It is installed on the mirror holder and can be rotated in any direction. It has flat and concave sides. Its function is to reflect the light from the light source to the condenser, and then illuminate the specimen through the light hole. The concave mirror condenses the light. It has a strong effect and is suitable for use when the light is weak. A plane mirror has a weak focusing effect and is suitable for use when the light is strong.
(2) The light collector (concentrator) is located on the light collector frame below the stage. It consists of a condenser lens and an aperture. Its function is to concentrate the light on the specimen to be observed.
① Condenser: It consists of one or several lenses, which can condense light, enhance the illumination of specimens, and allow light to enter the objective lens. There is an adjustment screw next to the mirror column. Turn it to raise and lower the condenser to adjust the field of view. The intensity of light brightness.
②Aperture (iridescent aperture): Under the condenser, it is composed of more than a dozen metal sheets. A handle protrudes from the outside. Pushing it can adjust the size of its opening to adjust the amount of light.
Optical part
(1) Eyepiece: It is installed at the upper end of the lens barrel. There are usually 2-3 eyepieces. There are 5×, 10× or 15× symbols engraved on them to indicate their magnification. Generally, a 10× eyepiece is installed.
(2) Objective lens: It is installed on the rotator at the lower end of the lens barrel. There are generally 3-4 objective lenses. The shortest one engraved with the symbol "10×" is a low-power lens, and the longer one engraved with the symbol "40×" It is a high-power lens, and the longest one with the "100×" symbol engraved on it is an oil lens. In addition, a line of different colors is often added to the high-power lens and the oil lens to show the difference.
