About Stereo Microscope
Five "Need-to-know" Points about Stereoscopic Microscope
Ⅰ.Classification of stereoscopic microscopes
In respect of structure, stereoscopic microscope can be classified into two basic structures: afocal zoom zoom and fixed-gear zoom. Distinguished from the optical system, it can be categorized into two types: Galileo (parallel light, chiefly used in scientific research) and Greenough (non-parallel light, applied to small models).
Ⅱ.Optical system of stereoscopic microscope
The zoom ratio of the optical system is a vital parameter of stereoscopic microscope, The larger the zoom ratio, the better the performance and the higher the price. For a fixed-gear stereoscopic microscope, if the zoom ratio is less, the relative price will be lower as well. Thus, we should choose a stereoscopic microscope in line with the required standard, and the product that suits us is the best.
Ⅲ.Observation target of stereoscopic microscope
Stereoscopic microscope is characterized by small amplification factor, large depth of field and three-dimensional sense of imaging, and it is generally applied to observe objects directly. Relative to a biological microscope, a stereoscopic microscope can generally achieve observation results when it is magnified within 100 times.
Ⅳ.Observation method of stereoscopic microscope
When using a stereoscopic microscope, it is necessary to observe the objects under the microscope from low magnification. At low magnification, it is easy to find images because of its large field of view and depth of field. After finding images at low magnification, further observe the objects at high magnification in turn.
Ⅴ.Lighting system of stereoscopic microscope
The lighting system of a stereoscopic microscope covers hot light source and cold light source, categorized into transmitted illumination, oblique illumination, epifluorescence illumination and so on. It is quite important to know the characteristics of each kind of light, so as to select illumination correctly and further enhance the observation effect. So how to choose it? Choosing the light with the best illumination effect depends on the type of sample, the related characteristics of the sample and the application field and purpose of microscope observation.
LED lighting system is chiefly used for SWIFT stereoscopic microscopes. In comparison with commonly used halogen lamps, the lighting technology of LED microscopes can offer a multiple of advantages for microscopic imaging, respectively:
- Longer life (25, 000 to 50,000 hours)
- Lower power consumption
- Natural color temperature
- Cold light source → less heat release
- A constant color temperature can be maintained even at different levels of brightness