Do you want to know more about optical lens?

An optical lens is an optical device with perfect or approximate axial symmetry which transmits and refracts light, converging or diverging the beam. Lenses are classified as single lenses, cylindrical lenses and achromatic lenses. A simple lens is a lens consisting of a single optical element. A compound lens is an array of simple lenses with a common axis; the use of multiple lenses allows more optical aberrations to be corrected than is possible with a single lense. Lenses have many applications ranging from the simple collection of a laser beam to precise imaging and image transfer.

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