Optical imaging lens including eight lenses of +−++−+−−, +−++−−+−, +−++−−−−, +−++−++−, +−+−−+−−, +−+−−−−−, +−+−++−− +−+−−++−, +−+−+++− or +−+−+−−− refractive powers

US11662555B2 · kind B2 · utility

Assignee

• Zhejiang Sunny Optical Co., Ltd · CN

Inventors

• Lihui Ye · 丈亭镇, CN
• Lingbo He · Zhejiang, CN

Key dates

• Filing date: Aug 14, 2018
• Grant date: May 30, 2023
• Expiry date: May 21, 2039

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B9/64
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

The disclosure discloses an optical imaging lens, which includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens which are provided in sequence from an object side to an imaging side along an optical axis, the first lens has a positive refractive power, and an object-side surface of the first lens is a convex surface; the second lens has a negative refractive power; the third lens has a positive refractive power; the fourth lens has a positive refractive power or a negative refractive power, an object-side surface of the fourth lens is a concave surface and an imaging-side surface is a convex surface; the fifth lens has a positive refractive power or a negative refractive power; the sixth lens has a positive refractive power or a negative refractive power, and an object-side surface of the sixth lens is a convex surface; the seventh lens has a positive refractive power or a negative refractive power; and the eighth lens has a negative refractive power.