A large-aperture wide-angle zoom lens
A zoom lens and large-aperture technology, applied in the field of optical lenses, can solve the problems of difficult research and development of zoom lenses, uncontrollable lens volume, etc., and achieve the effects of improving assembly efficiency, compact structure, and good imaging quality
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[0057] The surface shape, radius of curvature, lens thickness, lens distance, lens refractive index and K value of the ten lenses of the lens in total twenty surfaces meet the following conditions respectively:
[0058] Table 1: Physical parameters of ten lenses.
[0059]
[0060]
[0061] In the above table, "R" is the radius of curvature, "-" indicates that the direction is negative, and "PL" indicates a plane. If the serial number of the same surface in the above table has both refractive index data n and data D, the data D indicates the lens axis The thickness at the center line, if the same plane number only has data D but no refractive index data n, data D represents the distance from the lens to the next lens plane.
[0062] The 7th and 8th surface shapes with aspheric structure can be expressed by the following formula:
[0063]
[0064] where C=1 / R
[0065] Table 2: Aspheric parameters of the 7th and 8th surfaces.
[0066] Face number: 7 Face n...
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