The difference between confocal microscopy, optical microscopy, and measurement microscopy
The three names "confocal microscope", "measuring microscope", and "optical microscope" describe the different aspects of microscopy technology and its applications.
Optical microscope: This is a type of microscope that uses optical principles to image, and magnifies the image of the sample through a lens system. Optical microscopes are the fundamental category of microscopes, including traditional bright field, dark field, phase contrast microscopes, etc. They mainly rely on visible light for sample observation and imaging.
Confocal microscopy: Confocal microscopy is a subcategory of optical microscopy that uses a special imaging technique to selectively collect only the light on the focal plane of the sample, thereby obtaining higher resolution and clearer images than traditional optical microscopes. Confocal microscopy is one of the more advanced optical microscopy techniques, capable of performing two-dimensional and three-dimensional imaging.
Measurement microscope: This is a classification used for precise measurement of physical properties such as sample size, shape, and surface roughness. Measurement microscopes can be optical microscopes, electron microscopes, or other types of microscopes, and the key is that they are equipped with tools and functions for measurement. Confocal microscopy is often used as an advanced measurement microscope due to its high-precision three-dimensional imaging ability.
Simply put, "optical microscope" is a broad concept that encompasses all microscopy techniques that use optical principles for imaging; Confocal microscopy is a special technique in optical microscopy that provides high-resolution imaging; The "measuring microscope" is named based on the purpose of the microscope's application. It can be any type of microscope, as long as it is used to measure the physical properties of the sample. Confocal microscopy is often classified here due to its characteristics. These three names are interrelated, but each emphasizes the different properties or applications of the microscope.
