Ultra-wide-angle large-aperture aspheric lens
An aspherical, ultra-wide-angle technology, applied in the lens field, can solve problems such as insufficient resolution, affecting shooting quality, and long close-up distance, achieving high resolution, improving MTF, and realistic image quality
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[0027] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0028] The ultra-wide-angle large-aperture aspheric lens of the present invention comprises a first lens group, a variable diaphragm and a second lens group which are arranged in sequence along the light incident direction. in,
[0029] the first lens group has a positive power position that does not move;
[0030] the second lens group has a moving positive power position;
[0031] Moreover, the first lens group and the second lens group satisfy the following formula:
[0032] 1.5
[0033] In the formula, f1 is the focal length value of the first lens group, and f2 is the foca...
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