Disclosed is an optical imaging system, the system sequentially comprising, from an object side to an image side along an optical axis, a first lens having optical power, a second lens having negative optical power with an image side face thereof being a concave face, a third lens having optical power, a fourth lens having optical power, a fifth lens having optical power with an object side face thereof being a convex face, a sixth lens having optical power, a seventh lens having optical power with an object side face thereof being a convex face, and an eighth lens having optical power, wherein half of the maximum field of view angle Semi-FOV of the optical imaging system satisfies Semi-FOV＜30°.
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