Design of a lens system within mobile terminal

Jinfan Liu; Jie Ding

doi:10.1117/12.757979

28 November 2007 Design of a lens system within mobile terminal

Jinfan Liu, Jie Ding

Proceedings Volume 6834, Optical Design and Testing III; 68340Z (2007) https://doi.org/10.1117/12.757979
Event: Photonics Asia 2007, 2007, Beijing, China

Abstract

As the development of technology of liquid crystal monitors, mobile communication terminal products with cameras integrally installed in have become more popular with consumers. These cameras must satisfy some requirements, for example, the lens system must have a sufficient resolution and a size larger than the actual size of a sensor in consideration of an assembly tolerance. In this paper, we provide a lens system with a high performance and compact structure, which comprises a small number of lenses and is installed in a mobile communication terminal. In the system, both the first and the second lenses have positive powers, and the third lens has a negative power, respectively. One of the these lenses has at least one aspherical surface, and a perforated iris is located between the first lens and the second lens. All the material for the lenses is plastic. The lens system is compact and its field angle is larger than 60 degree. Moreover, the system consists of an infrared filter separated from the third lens by a designated distance for filtering infrared wavelengths incident onto the optical system so as to protect an image plane from the infrared wavelengths.

Citation Download Citation

Jinfan Liu and Jie Ding "Design of a lens system within mobile terminal", Proc. SPIE 6834, Optical Design and Testing III, 68340Z (28 November 2007); https://doi.org/10.1117/12.757979

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