The magnification of the eyepiece is inversely proportional to its length, while the magnification of the objective lens is directly proportional to its length.

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A digital microscope is simply a microscope that uses a digital camera in place of an eyepiece and connects to a computer monitor showing the results in real time.

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The difference between eyepiece and objective lens in optical microscope The eyepiece and objective of a microscope are both convex lenses, with the difference being that the focal length of the eyepiece is shorter,

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Digital Microscope cameras and USB microscope cameras use optics and a compact digital camera to show larger views of specimens on your monitor and are able to capture images. Both come with software to use for performing advanced tasks such as recording video, adjusting images, editing video footage, the ability to analyze 3-D samples, take measurements, and create reports.

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Eyepiece: Installed at the upper end of the lens barrel, usually with 2-3 pieces, engraved with symbols of 5 ×, 10 ×, or 15 × to indicate its magnification, usually equipped with a 10 × eyepiece Objective lens: Installed on the rotator at the lower end of the lens barrel, there are usually 3-4 objective lenses, among which the shortest one engraved with the "10 ×" symbol is the low magnification lens, the longer one engraved with the "40 ×" symbol is the high magnification lens, and the longest one engraved with the "100 ×" symbol is the oil lens. In addition, a circle of different colored lines is often added to distinguish between the high magnification lens and the oil lens

Digital Microscope Cameras and USB Microscope cameras are easy to install and use. Simply remove the standard optical eyepiece from your microscope and plug in the digital microscope camera/USB microscope camera. Most, if not all, are designed using the C-mount standard, the camera and come with a reduction lens and at least two other sizing adapters. They come in sets that come with USB cords and software making it easy to upgrade a standard microscope. Kits come in many varieties with as many or as little extras as you seek.

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2. The relationship between the eyepiece and objective lens of an optical microscope. The objective lens has already distinguished the fine structures clearly. If it is not magnified by the eyepiece, it cannot reach the size that the human eye can distinguish, and then it cannot be seen clearly; However, fine structures that cannot be distinguished by the objective lens cannot be seen clearly even after being magnified by a high-power eyepiece. Therefore, the eyepiece can only serve as a magnifying lens and will not improve the resolution of the microscope. Sometimes, although the objective lens can distinguish two objects that are very close together, the distance between the images of these two objects is smaller than the resolution distance of the eye, so it is still difficult to see clearly. So, the eyepiece and objective lens are both interrelated and mutually restrictive.

The objective lens is equivalent to the lens of a projector, and objects are inverted and magnified into a real image through the objective lens; The eyepiece is equivalent to a regular magnifying glass, and the real image formed by the objective lens is then transformed into an upright and magnified virtual image through the eyepiece

1. The function of the eyepiece of an optical microscope It is to further enlarge the real image that has been magnified by the objective lens and has a clear resolution, to the extent that the human eye can easily distinguish it.