本論文提出了針對UVC波段之光源進行的二階光學設計，此設計擁有較佳的光學利用率及高均勻度之表現。擁有精準的光源模型對於後端透鏡設計是非常重要的一步，本論文採用之LED光源的模型是以中場理論為基礎再透過光學模擬軟體ASAP輔助計算所建立，該光源模型透過實驗與模擬計算NCC高達99％以上，證明該模型之是足夠精準的，最後利用ASAP進行光源之光追跡模擬設計與優化二階光學元件。在論文中我們根據光學利用率和均勻度兩項指標設計了兩種類型的透鏡，分別為TIR透鏡和菲涅爾透鏡。兩種透鏡在設計完成並打樣後還進行了相關光學表現之量測，並在最後針對兩種設計之量測結果再進行討論與評估。;This thesis presents the optical model for a type of LED emitting a wavelength of the 275 nm and the design of lenses that increase the ability to direct light into a given target area, which satisfy the requirements such as uniformity, optical utilization factor (OUF). By using high-precision simulation software, Advanced Systems Analysis Program (ASAP), the light model for LED is established in simulation and verification by empirical measurement. Light models of LEDs in simulations and experiments that match up to 99% are considered standard. This model can be used to design lenses for LED and predict the optical performance of light when passing through the lens in the simulation. In this work, we design two types of lenses for LED: TIR lens and Fresnel Lens based on the requirements of optical utilization factor (OUF) and uniformity in the target area. After the design, the lenses manufacturing process at the factory are conducted. Through experimental measurements, we obtain the optical performance of light. Finally, we compare the results achieved between simulation and experiment and discussion.