Abstract: In this paper

an adaptive optics (AO) systems for retinal imaging was presented

which was operated on open-loop and two-wavelength mode. The system adopted a Shark-Hartmann wavefront senser (SHWS) and liquid crystal spatial light modulator to detect and correct the wavefront aberrations respectively. 790nm near infrared was used for the wavefront detection

and 570nm visible light was used for retinal imaging. To enhance the energy-utilizing rate and avoid the chromatic aberrations

the reflective off-axis system was used. The optical system also was simulated and analyzed with ZEMAX. The result showed that the optical system was good

and could achieve the diffractive limited resolution at the designing resolution 50 lp/mm.