Jiangxi Jingchao Optical Co., Ltd.

Yuming Le

Hairong Zou

Byoungtaek Yoo

Binli Lan

An optical system, sequentially comprising from an object side to an image side: a first lens having a negative refractive power, an object-side surface of the first lens being a convex surface, and an image-side surface thereof being a concave surface; a second lens having a negative refractive power, an image-side surface of the second lens being a concave surface; a third lens having a positive refractive power; a diaphragm; a fourth lens having a positive refractive power; and a fifth lens having a negative refractive power. The optical system satisfies the following relationship: (SD S)/(RDY S)<0.93, wherein SD Sis the Y-direction half aperture of the image-side surface of the first lens, and RDY Sis the Y radius of the image-side surface of the first lens.

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Nanchang, China

Yuming Le