Four-piece optical imaging lens with short lens and long field of view and imaging method thereof

Abstract

The invention relates to a four-element type optical image capture camera with short camera length and wide angle of view. The four-element type optical image capture camera comprises aperture diaphragms which are arranged in order along the camera optical axis from the object side to the image side, a first lens L1 with positive diopter, a second lens L2 with negative diopter, a third lens L3 with positive diopter, a fourth lens L4 with negative diopter, an optical filter and an image acquisition component. The invention also relates to an imaging method for the four-element type optical image capture camera with short camera length and wide angle of view. The invention effectively shortens the overall camera length, reduces the system sensitivity and achieves good imaging quality. In addition, it is simple and easy to manufacture each lens face, loose tolerance is achieved, and the manufacture cost is significantly reduced.

Description

technical field [0001] The invention relates to a four-piece optical imaging lens with a short lens and a long field of view and an imaging method thereof. Background technique [0002] With the advancement of technology, optical imaging lenses are developing towards short, high resolution, large field of view and low cost. In terms of electronic products, such as: digital cameras, mobile phones, and personal digital aids, optical imaging lenses They all occupy half of the country. [0003] Imaging lenses used in small electronic products currently have three-lens, four-lens, and five-lens designs. At present, the three-element imaging lens has basically been eliminated. From the perspective of imaging quality, the multi-element optical imaging lens has better performance in terms of aberration correction and optical transfer function MTF. Advantages, it can be used in electronic products with high pixel requirements, but the total length of the lens is too long, which is ...

AI Technical Summary

Problems solved by technology

At present, the three-element imaging lens has basically been eliminated. From the perspective of imaging quality, the multi-element optical imaging lens has better performance in terms of aberration correction and optical transfer function MTF. Advantages, it can be used in electronic products with high pixel requirements, but the total length of the lens is too long, which is not conducive to use on ultra-thin mobile phones

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