High-definition fish-eye lens

Abstract

The invention belongs to field of lens technology, and particularly relates to a high-definition fish-eye lens which comprises from the first lens to the sixth lens arranged in order from the object space to the image space. The first lens and the fourth lens are glass lenses while the third, fifth and sixth lens are plastic aspheric lenses. The first lens is a meniscus lens with negative focal power, the second lens is a biconcave lens with negative focal power or a meniscus lens with negative focal power, the third lens is a biconcave lens with positive focal power or a meniscus lens with positive focal power, the fourth lens is a biconcave lens with positive focal power, the fifth lens is a biconcave lens with negative focal power, the sixth lens is a biconcave lens with positive focal power. Compared with current technology, the high-definition fish-eye lens is capable of realizing small size and light weight for effective cost control. The corner relative illuminance reaches over 65% with the sound design of lens for guaranteeing the corner image quality. The high-definition fish-eye lens is capable of meeting the requirement of resolution day and night with supporting confocal image of visible light and infrared. The maintenance of resolution is ensured in the environment with the temperature ranges from -45 to +85 DEG C.

Description

technical field [0001] The invention belongs to the technical field of lenses, in particular to a high-definition fisheye lens. Background technique [0002] High-resolution high-definition fisheye lenses are widely used in security monitoring, vehicle and other equipment. With the rise of VR technology and panoramic photography, the consumer electronics market also requires high-resolution and high-definition fisheye lenses, and its market potential is huge. For example, the panoramic motion camera disclosed in the Chinese patent application with the application number CN201610023156.0 needs a high-definition fisheye lens with light weight, high resolution, and optical total length. [0003] Traditional high-definition fisheye lenses are usually all-glass lenses, and more than 6 glass lenses are required. For example, the high-definition fisheye lens disclosed in Chinese patent application No. CN201410702755.6 uses 9 glass lenses, but this wide-angle lens It's big, heavy,...

AI Technical Summary

Problems solved by technology

[0003] Traditional high-definition fisheye lenses are usually all-glass lenses, and more than 6 glass lenses are required. For example, the high-definition fisheye lens disclosed in Chinese patent application No. CN201410702755.6 uses 9 glass lenses, but this wide-angle lens Bigger, heavier, and more expensive

[0004] There are also products that combine aspheric plastic lenses and optical glass lenses to reduce weight and cost. For example, the wide-angle lens disclosed in Chinese patent application No. 200910099703.3 uses 4 glass lenses and 2 aspheric lenses. However, the resolution is low and cannot meet the requirements of high-definition

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