A Brief History of Microscopes
With the advancement of science and technology, there has been a growing need to observe the microscopic world. The microscope is precisely such a device-it breaks through the limits of human vision, extending it to fine structures invisible to the naked eye.
Microscopes have been developing since the 16th century, evolving from early compound microscopes based on simple magnifying glasses to more structurally complex versions. With the emergence of phase contrast, fluorescence, and polarization microscopy techniques, they have found ever-wider applications in fields such as medicine, biology, materials science, and chemical engineering.
Manufacturer of Microscope
Microscope Imaging Principle
When an object is positioned between F and 2F in front of the objective lens (where F is the focal length on the object side), an enlarged, inverted real image is formed beyond twice the focal length on the image side of the objective lens.
In microscope design, this intermediate image is positioned near the focal point of the eyepiece (F₂). The first magnified image from the objective (the intermediate image) is thus further magnified by the eyepiece. Ultimately, an enlarged, upright virtual image is formed on the object side of the eyepiece (the same side as the intermediate image), at the near point (comfortable viewing distance) of the human eye.
Therefore, when viewing through the eyepiece (without additional correcting prisms) during microscopy, the final image appears inverted relative to the original object.
Types of Microscope Imaging
