Where is the main function in light reactions?

The main function of the light reactions, which occur in the thylakoid membranes of chloroplasts, is to convert light energy into chemical energy. This process involves the absorption of sunlight by chlorophyll, leading to the splitting of water molecules (photolysis) and the production of ATP and NADPH. These energy carriers are then used in the subsequent light-independent reactions (Calvin cycle) to synthesize glucose. Additionally, oxygen is released as a byproduct of this process.