Guide to Calculating the Actual Magnification of Microscopes
Many customers have called me asking what is the magnification of a microscope *. Below, I will give you a brief explanation, hoping to be helpful to everyone. We use a formula to express: the magnification of the objective lens * (the diagonal of the computer screen/cd or the target size of the CMOS)=the magnification of the system. The magnification of the objective lens: conventional options include 5, 10, 20, 40, 60, 80, and 100x, and can also be selected according to customer needs.
Computer screens are usually measured in inches, so they need to be multiplied by 25.4 millimeters to obtain units. The diagonal of a computer screen is usually measured in inches, for example, a 17 inch screen should be multiplied by 25.4 in millimeters; 1 inch equals 25.4mm.
The target size of CCD or CMOS: Commonly used CCD or CMOS include 1/2/3, 1/2, 1/3, and 1/4 inches. Conventional digital microscopes use a third lens with CCD or CMOS to achieve this. However, if you have already purchased a traditional 2-channel stereo or metallographic microscope; How to achieve it? To achieve digitalization without eliminating the original purchased products and saving costs, we need to directly observe the products on a computer screen while protecting our eyes, which requires modification. The target size of CCD or COMS, which is closely related to the magnification, directly affects the magnification of the digital microscope.
Let's take a look at what the target size is? In fact, it is the diagonal size of CCD or COMS. The commonly used CCD or COMS have 1, 2/3, 1/2, 1/3, and 1/4 inches. The specific sizes are as follows:
1 inch - The target surface size is 12.7mm wide by 9.6mm high, with a diagonal of 16mm.
1/2 inch - The target surface size is 6.4mm wide by 4.8mm high, with a diagonal of 8mm.
1/3 inch - The target surface size is 4.8mm wide by 3.6mm high, with a diagonal of 6mm.
1/4 inch - The target surface size is 3.2mm wide by 2.4mm high, with a diagonal of 4mm.
2/3 inch - The target surface size is 8.8mm wide by 6.6mm high, with a diagonal of 11mm.
So now that we know the target size of CCD or CMOS, it's easy to determine the magnification of your microscope. According to our formula for digital magnification:
The magnification of the objective lens multiplied by the diagonal of the computer screen/ccd or the target size of the CMOS is equal to the total magnification.
For example, the total magnification of a digital microscope with 10x objective lens and 1/3 inch CCD or CMOS=10x objective lens * (15 inches * 25.4/target size 6mm)=635x
