Design of wide-angle lens for 8 mega-pixel mobile phone camera

In order to meet the requirement of mobile phone market on the wide-angle and high-pixel mobile phone lens,a wide-angle and 8 mega-pixel mobile phone lens is designed. The mobile phone lens are composed of 4 plastic aspheric lens and an IR filter,and the F-number is 2. 45 and FOV is 80. The sensor OV8850 made by Omnivision with 8 mega pixels,maximum resolution of 3 280 pixel × 2 464 pixel,pixel size of 1. 1 μm,and Nyquist sampling frequency of 454 lp / mm. The design result shows that the MTF value is larger than 0. 48 at 1 /2 Nyquist sampling frequency in the 0. 7 fields of view( FOV),and the MTF of FOV is larger than 0. 38. The MTF value in 0. 7 FOV is larger than 0. 15 at Nyquist sampling frequency and the distortion is less than 2%.