This article introduces the design and research process of the indoor lighting environment space design simulation system. From its composition, it is mainly divided into databases and indoor lighting software. The database system can provide supporting data for indoor lighting software, and the indoor lighting software includes multiple parts such as scene modeling and lighting calculation. With the help of the application program interface, the database achieves the transmission of data to the indoor lighting software, and then further completes the calculation of lighting through the indoor lighting software. In view of this, this article mainly explores and analyzes the model construction of optical remote sensors and the design model system of indoor lighting environment space. In addition, this article also uses three simulation models for optical imaging, namely ray tracing model, modulation transfer function model, and point spread function model, as effective research objects. Then, modulation transfer function and point spread function models are selected for comprehensive comparison to identify their advantages and disadvantages, and the two are used as the basis for the simulation model in this article. Through experiments, it was found that after modeling and simulating optical remote sensors, a variety of simulated images can be obtained. By using optical remote sensing image processing technology, a lot of useful information can be extracted, ultimately achieving diversified application effects of optical remote sensing images.