Large-aperture high-definition optical lens

Abstract

The embodiment of the present invention discloses a large-aperture high-definition optical lens, which includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens arranged in sequence along the optical axis direction from the object plane to the image plane. The lens, the seventh lens, and the optical filter, the first lens is a meniscus lens with a negative power, the second lens is a biconcave lens with a negative power, and the third lens is a biconvex lens with a positive power , the fourth lens is a biconvex lens with a positive power; the fifth lens is a meniscus lens with a negative power; the sixth lens is a biconvex lens with a positive power; the seventh lens is a biconvex lens with a power of Positive meniscus lens. The optical parameters of the present invention match better with the imaging conditions, so that the aberration of the lens system is corrected to a greater extent, and the MTF is high and uniform, ensuring high-definition and uniform imaging on the entire image plane; the lenses are all spherical in design, and the lenses The cold processing process has good performance, low cost, and high mass production yield; it can be widely used in the field of driving records.

Description

technical field [0001] The invention relates to the technical field of optical camera modules, in particular to a large-aperture high-definition optical lens. Background technique [0002] In the field of security, network cameras are commonly used equipment in security systems, and the lens is the main component of the network camera. The performance of the lens directly affects the imaging quality and imaging field of view. With the continuous improvement of the technical index requirements of the driving system, how to improve night and micro The imaging field of view under light conditions has become a major issue in the driving record industry. The aperture of the ultra-wide-angle lens of the existing solution is generally around 2.0, while the field of view of the ultra-large aperture lens of the existing solution is generally below 100 degrees. With a large amount of light, the image brightness of the large aperture lens is higher than that of the ordinary lens in the...

AI Technical Summary

Problems solved by technology

However, the combination of large aperture and ultra-wide angle brings a larger imaging field of view and more difficult to correct aberrations, making it difficult for large-aperture lenses designed and manufactured with traditional structures to take into account a large field of view and generally have low resolution.

[0003] For example, the application number is 201611209922.9, and the invention patent titled "large-aperture high-definition optical system and its application lens" has insufficient field of view, small imaging field of view, low MTF resolution, small aperture, and low-light environment at night. poor disadvantage

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