Design of High Pixel Mobile Phone Camera Lens

Abstract

The compact, slim and high pixel mobile phone camera is highly demanded with the development of mobile phone, especially the thinner and thinner request of people. To satisfy this need, a mobile phone lens system composed of 1 glass spherical lens and 3 plastic aspheric lenses was designed with Code V. The F-number was 2.85 and FOV was 61°, the effective focal length and back focal length are 5 and 0.468 mm, respectively. A 1/3.2 inch 8 mega-pixel CMOS made by APTINA was taken as the image sensor of the lens assembly, whose pixel size is 1.4 µm and the limiting resolution was 357 lp/mm. The design results shown that the M TF value was more than 0.2 within most fields of view at the Nyquist frequency and more than 0.5 at the 1/2 Nyquist frequency, the maximum distortion was 0.66%. It shows that the lens has good performance and meets practical requirements.

Bio-inspired variable imaging system simplified to the essentials: modelling accommodation and gaze movement

“…Typically acceptable minimum fnumbers, e.g. for camera phones are in the range of 2.25 o 2.8 [10][11][12]. In conclusion, this means that the three quantities, sensor size, aperture diameter and focal length, have to be in the same range to guarantee sufficient light on the detector.…”

Design of a 16.5 Megapixel Camera Lens for a Mobile Phone

“…In the published papers, Song et al (2010) [3] studied a 5 megapixel camera lens for mobile phone by a structure of 4 pieces of plastic aspheric lens. Recently, Peng (2013) [4] investigated a 8 megapixel camera lens for cell phone by using 1 glass and 3 pieces of plastic aspheric lens (1G3P) to complete the optical system. Yin et al (2014) [5] investigated a 13 megapixel camera lens for mobile phone by choosing a 5 pieces of plastic aspheric lens (5P) structure configuration.…”