研究生: |
賴育崧 LAI YU SUNG |
---|---|
論文名稱: |
手機鏡頭設計 The lens design of mobile phones |
指導教授: |
楊士禮
SIDNEY S. YANG |
口試委員: | |
學位類別: |
碩士 Master |
系所名稱: |
電機資訊學院 - 光電工程研究所 Institute of Photonics Technologies |
論文出版年: | 2005 |
畢業學年度: | 93 |
語文別: | 中文 |
論文頁數: | 97 |
中文關鍵詞: | 光學模擬軟體 、手機相機 、非球面 |
外文關鍵詞: | OSLO, mobile phones, aspherical surface |
相關次數: | 點閱:2 下載:0 |
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本論文是利用OSLO光學模擬軟體,來探討和研究一百三十萬像素照相手機的鏡頭,主要的研究架構採自美國最近有關照相手機設計的專利—US Patent 6282033和US2005/0094292,分為四片球面和三片非球面兩種架構。
其分析專利和設計的流程可分為:1.先把專利中的鏡頭簡化成perfect lens,再分析其系統結構是否合理;2.畫出每個形狀因子對像差的變化圖,從圖中了解每個透鏡的主要功用,並決定像差最佳平衡的形狀因子;3.加入透鏡材質、曲率和厚度;4.開始優化,並達成設計要求。以上的設計流程中,會寫CCL(Compiled Command Language)程式來分析和優化專利,從中了解如何分析專利設計理念和說明如何利用OSLO光學模擬軟體功能來設計光學系統。
現今最具實用的照相手機架構為三片非球面架構,而本論文設計出「三片透鏡三面非球面透鏡系統」,比原專利製造成本低而性能也相當,證明本論文所寫的程式和分析方法確實是可行的。
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.
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