The camera lens is called optical imaging. Will be a variety of different shapes, different media optical components (in a certain way combined, so that light through the transmission of these optical parts or reflection, according to people's needs to change the direction of light transmission by the receiving device to receive, that is, the completion of the object Optical imaging process.
Optical lens should meet the imaging clear, light transmittance, image uniformity uniform distribution, image distortion, aperture adjustable requirements.
In general, each lens by a number of different surface curvature of the lens by a combination of different spacing. Spacing and lens curvature, light transmission coefficient and other indicators of the choice of the lens determines the focal length
Previous: Camera lens classification