Patent ID: 11960062
Assignee: ZHEJIANG SUNNY OPTICS CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 9:
10. An optical imaging lens, comprising, in order from an object side to an image side along an optical axis:
a first lens having a positive refractive power;
a second lens having a positive refractive power;
a third lens having a negative refractive power;
a fourth lens;
a fifth lens having a negative refractive power; and
a sixth lens having a positive refractive power,
wherein a total effective focal length f of the optical imaging lens and an entrance pupil diameter EPD of the optical imaging lens satisfy f/EPD<2.0; and
the total effective focal length f of the optical imaging lens satisfies 6.0 mm<f<7.5 mm;
wherein a combined focal length f56 of the fifth lens and the sixth lens and a combined focal length f34 of the third lens and the fourth lens satisfy 2.6<f56/f34<3.8.