本研究利用光學設計軟體建立環場式膠囊內視鏡光學模型，包含物面、環狀透明觀景窗、錐狀光學反射鏡、兩片式鏡組，以及像面。藉由增加鏡組焦數，以及改變錐狀光學反射鏡的位置，增加可使用的視場數量，並改善成像系統的品質。設計得到視場角為 65.08 度的新鏡組，當鏡組焦數調整為 4.2 時，可以取得三個視場的光點半徑大小在 17  m 以下，在空間頻率 100 lp/mm 的 MTF 高達 36%。

In this study, a radial imaging capsule endoscope (RICE) system is designed, the RICE uses a cone mirror, a radial window shell, and a focus optical module that comprise the radial imaging system. This concept was demonstrated in a packaged optical simulator. The RICE optical model also has been established and verifi ed by many simulations and experiments. In minimizing the sagittal and tangential aberrations, the optical module of the RICE has achieved an F-number of 4.2, a viewing angle of 65.08°, and an RMS radius of the 4th to 6th fi elds of less than 17  m. The modulation transfer function (MTF) is remarkably improved from 7% to 36% at 100 lp/mm on the 5th fi eld of the sagittal plane.