三百萬畫素二點七五倍光學變焦手機鏡頭設計

3M 2.75X Zoom Lens Design for a Mobile Phone

牟益弘(Yi-Hung Mou)

指導教授 ： 孫文信

國立中央大學/理學院/光電科學研究所/碩士(2008年)

摘要

現今在市面上的有光學變焦的手機產品較少，大多使用數位變焦，但是光學變焦的成像品質較為好， 現今市場以200萬畫素為主，在未來手機變焦鏡頭將會以搭配300萬畫素為主流，依此趨勢本論文以同時利用成像與非成像的光學模擬軟體對300萬畫素且具有光學變焦功能的手機鏡頭做分析探討，將美國專利US20070035851起始值的六片鏡片在優化過程中減少為五片，優化流程包括選定Sensor規格、光源波段權重值的決定與優化指令的研究與使用，優化完成再針對鏡頭繪製變焦軌跡圖並進行組裝公差分析、機構件的建立與進行雜散光分析，最後設計出一個長度為26 mm，二點七五倍光學變焦，成像品質達到所訂定標準的鏡頭。

關鍵字

變焦鏡頭 ； 照相手機鏡組 ； 公差分析 ； 雜散光分析

並列摘要

Most of the mobile phone that has camera function is using digital zoom lens design, but not optical zoom lens design although optical zoom lens design has the better image quality. It is popular for 2 mega pixels for mobile phone, 3 mega pixels will be the next popular design in the near future. So we design an 3m camera module that simulating and analyzing by Code V software. We used the parameters from US patent 20070035851 for initial value and reducing the elements from six to five in optimization process, the optimization process which include the choice of the sensor specification, the decision of the wavelength weighting, and the application of software commands, respectively. After optimizing, we drawn the focal variation trajectory diagram, analyzed the tolerance, bulit the barrels and housing and analyzed the stray light , at last we designed a lens modeule can reach 3.15 mega pixels performance, that the lens with TTL (Total Track Length) 26 mm and zoom ratio is 2.75.

並列關鍵字

zoom lens ； mobile phone camera ； tolerance ； stray light

參考文獻

[19] 譚智偉，「背投影電視鏡頭光學設計與公差分析」，中原大學應用物理所，碩士論文，民國九十五年。

[5] R.B. Johnson and C. Feng, ” Mechanically compensated zoom lenses with a single moving element”, Applied Optics, Vol. 31, Issue 13, pp. 2274,(2001)

[12] Joseph W.Goodman, “Introduction to Fourier Optics”, McGraw-Hill, New York(1996)

[13] Iain A.Neil, “Optimization glitches in zoom lens design”, Proc. SPIE, Vol. 3129, 158 , (1997).

參考資料