Miniature camera modules are widely used in mobile electronic devices such as mobile phones, personal digital assistants or tablet computers. The introduction of freeform surface in imaging systems provides numerous opportunities for enhanced performance, compactness and lightweight packaging. In this paper, we proposed a wide-angle, low-distortion and large-aperture optical system with freeform lens. A 110°full field of view, 1/1.8″ sensor size, 1.8 F number, 6.35 mm total track length (TTL) wide-angle high-resolution miniature camera lens was developed. The prototype exhibits a novel solution for wide-angle, ultra-short TTL lens in the application such as mobile phone cameras, wearable imaging systems and endoscopic systems.

微型相机模组广泛应用于手机、个人数字助理或平板电脑等移动电子设备中。在成像系统中引入自由曲面为增强性能、紧凑性和轻量化包装提供了众多机会。在本文中，我们提出了一种带有自由曲面镜头的广角、低畸变和大光圈光学系统。开发了110°全视场、1/1.8英寸传感器尺寸、1.8 F数、6.35毫米总轨道长度（TTL）广角高分辨率微型相机镜头。该原型机展示了一种新颖的广角、超短TTL镜头在手机摄像头、可穿戴成像系统和内窥镜系统等应用中的解决方案。