What parts does an optical microscope consist of?
The structure of an ordinary optical microscope is mainly divided into three parts: mechanical part, lighting part and optical part. The function of the mechanical part is to help external fixation and adjustment, the function of the lighting part is to help present the image under the stage, and the function of the optical part is to observe and use it as needed.
The mechanical part includes (1) lens base (2) lens column (3) lens arm (4) lens barrel (5) objective converter (rotator) (6) lens stage (stage) (7) adjuster.
The functions of the mechanical part are: (1) Mirror base: base, supporting function; (2) Mirror column: connecting the mirror base and mirror arm; (3) Mirror arm: the hand holding part when picking up and placing the microscope; (4) Lens tube : The upper end of the lens barrel is equipped with an eyepiece, and the lower end is equipped with a nosepiece; (5) nosepiece (rotator): can exchange objective lenses of different magnifications; (6) mirror stage (stage): used to hold glass slide specimens ; (7) Adjuster: moves the mirror stage up and down.
The lighting part includes reflectors and light collectors.
The functions of the lighting part are: (1) Reflector: The function is to reflect the light from the light source to the condenser, and then illuminate the specimen through the light hole; (2) Concentrator (concentrator): The function is to concentrate the light to the specimen to be observed.
The optical part includes eyepieces and objective lenses.
The functions of the optical part are: (1) Eyepiece: to observe the magnified object image, its length becomes shorter as the magnification increases; (2) Objective lens: to observe the magnified object image, its length becomes longer as the magnification increases.
Microscopes are classified based on microscopic principles and can be divided into polarized microscopes, optical microscopes, electron microscopes and digital microscopes.
Optical microscopes usually consist of optical parts, lighting parts and mechanical parts. Undoubtedly the optical part is the most critical, which consists of the eyepiece and objective lens. As early as 1590, Dutch and Italian eyeglass makers had created magnifying instruments similar to microscopes. There are many types of optical microscopes, including bright field microscopes (ordinary optical microscopes), dark field microscopes, fluorescence microscopes, phase contrast microscopes, laser scanning confocal microscopes, polarizing microscopes, differential interference contrast microscopes, and inverted microscopes.
