Patent ID: 11550122

Abstract:
An optical lens includes seven lenses sequentially arranged along an optical axis from an object side to an image side. A fourth lens includes a seventh surface facing the object side and an eighth surface facing the image side. Each of the seventh surface and the eighth surface includes an inflection point. The optical lens satisfies the following conditional formulas: −0.48<tan(EFL4*log(Slope_L42))<−0.38;  conditional formula 1:1 mm<Infp_L41_y<1.05 mm;  conditional formula 2:0.58 mm<Infp_L42_y<0.69 mm;  condition 3:1<(123{circumflex over ( )}T4)/(456{circumflex over ( )}Slope_L41)<1.67.  conditional formula 4: