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dargahi
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I like to know some concept about ball lenses (spherical lenses) specially when they are in contact with each other. I googled it but nothing. I will really be thankful if anyone can help me.
A ball lens is a small, spherical lens that is commonly used in optics and photonics applications. It is made from a highly transparent material, such as glass or crystal, and has a polished surface to refract light.
Ball lenses have several advantages over traditional lenses, such as a shorter focal length, wider field of view, and minimal spherical aberration. They are also compact and have a lower cost compared to other types of lenses.
A ball lens works by bending and refracting light as it passes through the spherical surface. This allows for the focusing of light at a specific point, similar to how a traditional lens works. The shape and material of the lens determine its optical properties and performance.
Ball lenses have a wide range of applications, including laser collimation, microscopy, fiber optic communication, and endoscopy. They are also used in medical devices, barcode scanners, and optical sensors.
The performance of a ball lens can be measured by several factors, including its focal length, numerical aperture, and transmission efficiency. These can be determined through various tests, such as MTF (Modulation Transfer Function) testing and interferometry.