Dongguan Yutong Optical Technology Co., Ltd.

Chen Yao

Lei Zhang

Jianwei He

Provided a wide-angle lens includes: first lens, second lens, third lens, fourth lens, fifth lens, sixth lens, and seventh lens arranged sequentially from object surface to image surface along optic axis; first lens and sixth lens are negative focal power lenses, third lens, fourth lens, fifth lens, and seventh lens are positive focal power lenses, and second lens is negative or positive focal power lens; focal lengths of first lens, second lens, third lens, fourth lens, fifth lens, sixth lens, seventh lens, and the wide-angle lens are f1, f2, f3, f4, f5, f6, f7 and f respectively, satisfying: 0.3≤|f1/f|≤2.6, |f2/f|≥2, 2.3≤|f3/f|≤7.2, |f4/f|≥0.8, 0.67≤|f5/f|≤2.94, 0.32≤|f6/f|≤2.77, and |f7/f|≥0.16. The wide-angle lens can satisfy surveillance requirements of high definition and small distortion while ensuring low cost.

Growing community of inventors

Dongguan, China

Chen Yao