300万像素手机镜头设计

详细信息

Design of lens for 3 mega-pixel mobile phone camera

1.
Institute of Photonics &Photo Technology,Northwest University,Xi′an 710069,China;
2.
Division VII of BYD CO.,Ltd.,Shenzhen 518111,China;
3.
Department of Physics,Northwest University,Xi′an 710069,China

摘要: 设计一种300万像素的手机镜头。该镜头由3片塑料非球面透镜和1个红外滤光片组成，采用三星公司的一款300万像素0.635cm(1/4inch)CMOS作为该镜头的图像传感器，像素颗粒大小为1.75μm,其分辨率极限为285lp/mm,即为奈奎斯特频率。镜头的光圈值F为2.85，视场2ω为62°。该镜头有较好的成像质量，在奈奎斯特频率1/2处绝大部分视场的MTF值大于0.5，波前均方差(RMS wavefront error)小于0.14λ(λ为波长)，最大畸变为-0.2%。
- 光学设计 /
- 手机镜头 /
- 300万像素 /
- 非球面透镜 /
- MTF /
- ZEMAX
Abstract: A mobile phone lens assembly composed of 3 plastic aspheric lenses and an IR filter was designed. This lens assembly has an excellent imaging performance. Considering production and cost, the plastic lens 480R was chosen. The 1/4 in 3 mega-pixel CMOS made by Samsung was taken as the image sensor of the lens assembly, whose pixel size was 1.75μm, limiting resolution was 285lp/mm, F-number was 2.85 and FOV was 62°. Its MTF in the most of FOV at half of Nyquist frequency is higher than 0.5, RMS wavefront error is less than 0.14λ and maximum distortion is -0.2%.
- optical design /
- lens of mobile phone /
- 3 mega-pixel camera /
- aspheric lens /
- MTF /
- ZEMAX