zoom imaging lens

Abstract

The invention discloses a zoom imaging lens, which comprises a first lens with positive power, a second lens with negative power, a third lens with positive power, a fourth lens with positive power and a lens with negative power. The fifth lens with dioptric power is characterized by a liquid lens in front of the first lens, the curvature radius R value of the liquid lens satisfies ‑31mm<R≤∞, and the focal power φ satisfies ‑0.002

Description

technical field [0001] The invention relates to an imaging lens, in particular to a zoom imaging lens. Background technique [0002] With the rapid development of science and technology and the popularization and application of information technology, imaging lenses are widely used in electronic components in the fields of vehicle, transportation, industrial production, retail and other fields. Traditional electronic components mostly use fixed-focus lenses. Although this type of lens has a simple structure, is easy to manufacture, and is cheap, it takes a long time to fix the focus, the speed is slow, the resolution is low, and the depth of field is short. The demand for working distance collection, especially in the fields of large-scale logistics and industrial production. Therefore, the development of a lens with automatic zoom function, higher resolution and longer depth of field has become the focus of attention in the field of information collection at home and abroa...

AI Technical Summary

Problems solved by technology

At present, most zoom lenses are realized by manually or electrically moving the position of the lens, which is large in size, slow in zoom speed, and low in zoom precision, which cannot meet the current market demand for speed and precision.

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