What's the difference between a light microscope and a biological microscope?
Not really. But it's not that you can't necessarily look at it. That is, the imaging effect is worse or not up to the effect you want.
Optical microscope is divided into biological microscope: look at the cells ah epidermis ah. There are industrial microscopes: look at the ore crystal or semiconductor wafer.
Because of the roughness of the surface of the problem and the problem of the effect they want to achieve, and can choose the stereo microscope: suitable for the surface of the uneven device, the precision requirements are not very high. Metallographic microscope: and the name of the same is in the gold image is very strong in a kind of special use to see the metallographic class. Measuring microscope: more speciality in measuring, used to measure some circuit boards or pits and pits of data.
Another more expensive type of laser confocal microscope is also great for looking at electronic parts. It is much better than the traditional optical microscope in terms of magnification and imaging effect, and is used in scientific research.
For electronic parts, sometimes a moving stage is used because the workpiece is large. Or because of the convexity and concavity of the problem need to have the depth of field expansion of the software assistance.
Experimental summary of the structure and use of the microscope
An ordinary optical microscope consists of a mechanical part, an illumination part and an optical part. The mechanical part of the microscope includes the mirror base, mirror tube, objective converter, carrier stage, pusher, coarse adjustment handwheel, fine adjustment handwheel and other parts.
The mirror base is the basic support of the microscope, which consists of two parts: the base and the mirror arm. It consists of two parts: the base and the mirror arm. The carrier stage and the mirror tube are attached to it, which is used as the basis for installing the components of the optical magnification system. The base and the mirror arm play the role of stabilising and supporting the whole microscope. The barrel is connected to the eyepiece on the top and the converter on the bottom, forming a darkroom between the eyepiece and the objective lens (mounted under the converter).
Three to four objectives can be mounted on the objective converter, usually three objectives (low magnification, high magnification and oil lens). Rotate the converter, can be required to one of the receiving lens and the lens barrel alignment (note that the rotation of the conversion for the selection of lenses, can not grasp the objective lens to turn), and with the eyepiece to form a magnification system.
There is a hole in the centre of the stage for the light channel. On the table is equipped with a spring specimen clip and pusher, its role is to fix and move the position of the specimen, so that the object of microscopy is located in the centre of the field of view. The pusher is a mechanical device for moving the specimen, which is made up of a metal frame with two propelling tooth axes, one horizontal and one vertical.
