Abstract
The goal of this thesis is using optical software, “OSLO”, to design camera lens in 1.3- mega-pixel mobile phones. A design procedure has been proposed. Two examples, used to illustrate this design procedure, are based on two patents－Patent 6282033 and US2005/0094292, a four-component spherical and a three-component aspherical mobile phone camera system, respectively. The design process includes four steps: 1. Simplifying all elements in the patent into perfect lenses, and making sure that the structure is reasonable. 2. Drawing ray intercept curves of each Seidel aberration versus shape factor, analyzing those diagrams to define the main function of each lens, and deciding its best shape by balancing the aberrations. CCL, “Compiled Command Language”, programs are written to calculate the ray intercept curves in this step. 3. Adding the material, curvature, and thickness of each lens. 4. Optimizing toward the design requirement. In this step, OSLO will take the analyzed result, modify and optimize the design to satisfy the requirement. Following the steps also provides a way to visualize the design of the patent and demonstrates how to use “OSLO” to design the optical system. Nowadays, the most commonly-used camera phone’s structure is a triplet aspherical system similar to the patent I quoted. Here I designed the triplet system with only three aspherical surfaces. Saving three spherical surfaces, it is cheaper than the original patent and acquires similar performance. This shows that the procedure is indeed valuable in optical lens design.