本計畫主要研究一種可應用於生醫產品，利用結構光之3D感測技術，建立三維立體成像，並使用VCSEL面射型雷射光源，利用繞射式光學元件(Diffraction Optical Element ,DOE)改變光強度分佈，建立所需要的結構光圖形，以期能改進現有的醫療設備，增加使用效率，減少不必要的能源消耗及浪費。本計劃擬建立的光學設計技術的主要步驟：1. 設計一準直繞射光學元件，使光源出光角能夠準直達到所需要求，接著將此準直光入射至設計的DOE，產生所需的結構光；2. 使用商用軟體VirtualLab建構DOE模型，進行初階設計驗證與進階設計；3. 將模擬結果之模型輸出，委外製作打樣，並驗正打樣結果是否符合要求。本計劃的技術特點在於利用繞射式光學元件產生透鏡或是反射鏡難以達成的特殊光斑，利用此特殊光斑可以達成3D感測，在精度上更能感測出細微之輪廓，受環境光源之影響也較小，應用於生醫產品，能讓醫生準確判讀出其尺寸和位置，在判斷上能有大幅提升之效果。 ;This project mainly focuses on a product which apply to biomedical engineering. Using structured light which based on 3D sensing technology in order to construct three-dimensional images. A vertical-cavity surface-emitting laser is taken as light source. Combining with diffraction optical elements so as to change the distribution of luminous intensity and create structured light pattern required. The main steps of this project: (1) Design a collimated diffraction optical element to collimate the angle required of the light from light source. (2)By using the software, Virtuallab, construct the model of diffraction optical elements and to process the primary and advanced design. (3) According to the output model of the simulation results, to manufacture the samples by outsourcing. Afterwards, verify the samples to confirm the samples meet the demands. The distinguish technological feature of this project is using diffraction optical elements in order to produce special speckles which couldn’t be generated by lens and mirrors. Using this speckles can accomplish 3D sensing. And it is more accurate in the sense of sensing the contour. Also , it is less effected by environmental light sources. Applying to biomedical product allows doctors to accurately judge the situation ,the size and the location , and makes the judgment more precise.
