We start from the Einstein's general relativity and derive gravitational deflection angle, we then establish the source-lens system-observer relation by coordinate mapping; this relation is the called lens equation. Next we give the single and binary lenses system light curve calculation and also its finite source effect correction. Finally the applications of micro-lensing and Pan-STARRS observing experience are described.

在論文裡，我們從愛因斯坦的廣義相對論開始，得到由重力產生的光偏折角，用以建構出重力透鏡方程式，即描述光源、透鏡及觀察者等性質的方程式。接著我們將其應用在計算一個及兩個質點的微重力透鏡的光變曲線，並且作了光源的大小修正，使其非無限小之光源，並且分析不同的光源亮度分佈對光變曲線的影響。最後我們介紹微重力透鏡的應用以及將其應用在泛星計畫上。

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