In order to improve the sensitivity of the CCD, the makers add microlens array on the CCD surface to increase the quantum efficiency. Because the microlens can focus the light ray, the rays’ incidence angel must be small. Normal lens decrease the incidence angle in image space by increase back focal distance, but the overall length increases and the imaging effect is not better. An aerial digital camera lens with telecentric beam path in image space is designed; the chief ray exit angle of the edge fields is 0°.In this way, the special requirements for lens of digital camera with microlens array is solved. It is proved that the telecentric beam path camera lens has high resolution, good illumination homogenization in image plane, short overall length and light weight.