Wide-angle high-resolution pick-up lens

Abstract

The invention discloses a wide-angle high-resolution pick-up lens. A first lens, an aperture diaphragm, a second lens, a third lens, a fourth lens and an optical filter are sequentially arranged on the wide-angle high-resolution pick-up lens from the object side to the image side, wherein the first lens is biconcave and has negative focal power, the second lens is biconvex and has positive focal power, the third lens is biconvex and has positive focal power, and the fourth lens is a meniscus and has negative focal power, wherein the convex face of the fourth lens faces the image side. The third lens and the fourth lens are bonded together to form a bonding lens. The aperture diaphragm is located between the first lens and the second lens. The wide-angle high-resolution pick-up lens has the advantages of being compact in structure, large in field angle, high in imaging quality and low in cost.

Description

technical field [0001] The invention relates to the technical field of optical imaging, in particular to a wide-angle and high-resolution camera lens. Background technique [0002] With the improvement of people's safety awareness, the security monitoring market has risen rapidly in recent years. Surveillance equipment has become an important tool for the public security field to investigate and solve crimes. Surveillance cameras can be seen everywhere in the streets and alleys, communities and indoors, which has greatly deterred criminals. The function guarantees everyone's safety, especially the application of IP cameras, which also provides a lot of convenience for our life. Due to the improvement of data processing and network transmission speed, the requirements for lens imaging quality are getting higher and higher, and high-definition lenses have gradually become the mainstream products in the market. At present, most domestic low-cost fixed-focus lenses are standard...

AI Technical Summary

Problems solved by technology

At present, most domestic low-cost fixed-focus lenses are standard-definition, which cannot meet the image quality requirements of high-definition lenses; the megapixel high-definition surveillance lenses on the market are mainly imported, generally composed of 6 lenses, and some even use aspheric technology. The product structure is complicated, the price is high, and the imaging quality cannot meet the market demand.

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