Optical imaging lens

• Main Authors: CHEN BAINA, LIM MOOJONG, LI JIANPENG
• Format: Patent
• Language: Chinese; English
• Published: 03.01.2023
• Subjects: OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS

The invention provides an optical imaging lens. The optical imaging lens sequentially comprises an aperture, a front lens group and a rear lens group from an object side to an image side along an optical axis, the first lens of the front lens group from the object side is a first lens, and the second lens is a second lens. The first lens has a positive refractive index, and the optical axis area of the object side surface of the second lens is a convex surface, or the circumferential area is a convex surface. Only five lenses are arranged on the optical imaging lens, the rear lens group enables the optical imaging lens to form a first focusing state and a second focusing state, EFL is the effective focal length of the first focusing state, EFLA is the effective focal length of the second focusing state, and EFL/EFLAA is larger than or equal to 1.200. 本发明提供一种光学成像镜头，由物侧至像侧沿光轴依序包含光圈、前透镜组和后透镜组。前透镜组从物侧数来的第一个透镜为第一透镜、第二个透镜为第二透镜。第一透镜具有正屈光率、第二透镜的物侧面的光轴区域为凸面、或其圆周区域为凸面。光学成像镜头的透镜只有五片，后透镜组使光学成像镜头形成第一对焦状态及第二对焦状态，EFL为第一对焦状态