The invention relates to an optical system, a camera module, camera equipment and an automobile. The optical system includes, from an object side to an image side along an optical axis: a first lens element with negative refractive power, wherein the object-side surface of the first lens element is convex near an optical axis, and the image-side surface is concave near the optical axis; a second lens element with negative refractive power, wherein the image-side surface of the second lens element is a concave near the optical axis; a third lens element with positive refractive power, wherein an object-side surface of the third lens element is convex near the optical axis, and an image-side surface is convex near the optical axis; and a fourth lens element with positive refractive power, a fifth lens element, a sixth lens element and a seventh lens element, wherein the fourth lens element, the fifth lens element and the sixth lens element are glued in sequence to form a glued lens group, and the glued lens group has positive refractive power; the optical system satisfies the following relation: 2<4, wherein f456 is the combined focal length of the fourth lens element, the fifth lens element and the sixth lens element, and f is the effective focal length of the optical system. The optical system has the characteristic of large visual angle, and can also have clear imaging at the same time.
本发明涉及一种光学系统、摄像模组、摄像设备及汽车。光学系统,沿光轴由物侧至像侧依次包括:具有负屈折力的第一透镜,其物侧面于近光轴处为凸面,像侧面于近光轴处为凹面;具有负屈折力的第二透镜,其像侧面于近光轴处为凹面;具有正屈折力的第三透镜,其物侧面于近光轴处为凸面,像侧面于近光轴处为凸面;具有屈折力的第四透镜、第五透镜、第六透镜及第七透镜;第四透镜、第五透镜及第六透镜依次胶合以构成胶合透镜组,胶合透镜组具有正屈折力;且光学系统满足关系:2<f456/f<4;f456为第四透镜、第五透镜及第六透镜的组合焦距,f为光学系统的有效焦距。上述光学系统拥有大视角特性,且同时还能拥有清晰的成像。
Optical system, camera module, camera equipment and automobile
光学系统、摄像模组、摄像设备及汽车
2021-06-01
Patent
Elektronische Ressource
Chinesisch
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