Optical imaging system

Abstract

An optical imaging system includes a first lens having a negative refractive power, a second lens, a third lens having a positive refractive power, a fourth lens, a fifth lens, a sixth lens, a seventh lens having a negative refractive power, and an eighth lens, the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, and the eighth lens being sequentially arranged in ascending numerical order along an optical axis of the optical imaging system from an object side of the optical imaging system toward an imaging plane of the optical imaging system, wherein the optical imaging system satisfies a conditional expression

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