The size and structure of three line array stereoscopic mapping camera is mainly determined by the optical system. It is necessary for certain the miniaturization

lightening and high reliability of the camera. Kinds of optical system configurations are analyzed and compared by the requirements of the optical system. Telecentric system is adopted to meet the requirement of stereoscopic mapping. The MTF value of each lens is close to the diffraction limit at Nyquist frequency of 77 lp/mm. The tested result shows the MTF of each optical system can reach to 0.43 at Nyquist frequency of 77 lp/mm

which can meet the requirements of precision for the mapping camera.