| Customization: | Available |
|---|---|
| After-sales Service: | 1year |
| Warranty: | 1year |
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| Magnification | 10x |
| Model | NIR/IR |
| NM | 400-1800NM |
| NA | 0.3 |
| WD(m) | 23.3 |
| f'(mm) | 10 |
| R(μm) | 2.16 |
| DF(μm) | 7.2 |
| Objection(m) | 1.3 |
| Image(m) | 26 |
| Screw | M26 |
The main parameters of the objective lens include: magnification, numerical aperture and working distance.
Magnification refers to the ratio of the size of the image seen by the eye to the size of the corresponding specimen. It refers to the ratio of length rather than area. Example: magnification is 100 ×, It means the length is 1 μ M specimen, the length of the enlarged image is 100 μ m. In terms of area, it is magnified 10000 times.The total magnification of the microscope is equal to the product of the magnification of the objective lens and the eyepiece.
Numerical aperture, also known as aperture ratio, abbreviated as Na or a, is the main parameter of objective lens and concentrator, which is directly proportional to the resolution of microscope. The numerical aperture of the dry objective is 0.05-0.95, and the numerical aperture of the oil immersed objective (cedar oil) is 1.25.
Working distance refers to the distance from the lower part of the front lens of the objective lens to the upper part of the cover glass of the specimen when the observed specimen is the clearest. The working distance of the objective lens is related to the focal length of the objective lens. The longer the focal length of the objective lens, the lower the magnification, and the longer the working distance.
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