Research on stray light suppression of star simulator

We propose a new optical engine that supresses stray light to address the problems of high stray background light and low star point simulation in traditional star simulators and offer an experimental proof that the new design provides higher contrast. Our design incorporates an optical collimator with a modulation frequency transfer function (MTF) greater than 0.6 at a cut-off frequency of 60 lp/mm that meets star point identification requirements. Experimental results show the background noise of the high contrast star simulator to be well suppressed, providing a 3.16-fold reduction in stray light compared with a traditional system.