Camera optical lens

US11693220B2 · kind B2 · utility

Assignee

• Changzhou Raytech Optronics Co., Ltd. · CN

Inventor

• Xuqi Bian · Lo Wu, CN

Key dates

• Filing date: Dec 30, 2020
• Grant date: Jul 4, 2023
• Expiry date: Feb 2, 2042

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B27/0025
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

The present disclosure discloses a camera optical lens, which includes, from an object-side to an-image side: a first lens having a positive refractive power, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eight lens, which satisfies following conditions: 0.95≤f/TTL; −4.00≤f2/f≤−1.90; and −15.00≤(R7+R8)/(R7−R8)≤−2.50; where TTL denotes a total optical length from an object-side surface of the first lens to an image surface of the camera optical lens along an optic axis; f denotes a focal length of the camera optical lens; f2 denotes a focal length of the second lens; R7 denotes a curvature radius of an object-side surface of the fourth lens; R8 denotes a curvature radius of an image-side surface of the fourth lens. The camera optical lens can achieve good optical performance while meeting the design requirement for long focal length and ultra-thinness.