- 學位論文
精密鑽石車削複合光學元件之研究
Study on Precision Diamond Turning of Hybrid Optical Components
摘要
光學元件不論在尖端科研或日常生活皆受到廣泛的應用；而為因應輕、薄、短、小、精密化之發展趨勢，光學元件已從傳統之球面進化為非球面、進而繞射光學元件、複合光學元件。與球面相比較，非球面有矯正像差且提高光學系統精度的作用，而繞射光學元件可以進一步簡化光學系統使之更輕薄。複合光學元件為一新興技術，它結合了折射光學與繞射光學，因為它具高繞射效率、設計參數選擇性且容易做到微型，故為一非常具有潛力的技術。本研究經由分析繞射光學元件、複合光學元件之光學設計參數，針對此一光學元件的形貌利用Ｃ語言規劃畫出合適且精準的鑽石車削刀具路徑，並且探討利用半Ｒ刀具加工時加工路徑所發生的干涉問題，且對干涉的偵測及避免提出對策。經由實際切削驗證，結果證明本研究開發出之繞射光學元件加工程式能產生正確的加工刀具路徑及有效縮短加工此類光學元件之規劃及加工時間。
並列摘要
Optical components are widely used in industry nowadays. Modern optics often introduces the aspheric surface of optical components. The aspheric surface has the function of rectifying aberration by comparing to the spherical surface. Additionally, it also simplifies the system as well as rises in the precision of optical system. In this thesis, the hybrid optical components based on basic diffraction theorem have the advantages of small size, light weight, flexibility and ease of duplication. The design of the hybrid optical components, which comprising a conventional refractive surface and a surface relief diffractive structure, is a new technique. The advantage of hybrid optical components, which with high diffraction efficiency and various design parameters, make it become a powerful technique today. This research designed the optical components profile by C programming from the Fresnel optical components design parameters. The accurate of diamond turning tool path can be determined from the optical components profile. The interference questions of half R cutting tool and how to avoid the interference will be discussed in order to approach the originally designs as precisely as possible. The method can save the manufacturing time of optical components.