Light source system and related projection system

A light source system, comprising:

• a light generating device which includes an excitation light source, a wavelength conversion layer and a first drive device;
• wherein the excitation light source generates an excitation light;
• wherein the wavelength conversion layer has a first segment and a second segment, the first segment carrying a first wavelength conversion material which absorbs the excitation light and emits a first light, the second segment emits a second light;
• wherein the first drive device drives the wavelength conversion layer such that a light spot formed by the excitation light on the wavelength conversion layer falls on the wavelength conversion layer along a predetermined path and the wavelength conversion layer sequentially generates the first light and the second light;
• a light division system which includes a first light division device having a first segment and a second segment, the first segment dividing the first light from the light generating device into a light in a first wavelength range and a light in a second wavelength range and outputting them respectively along a first light path and a second light path, the second segment outputting at least a part of the second light from the light generating device along the first light path;
• a first spatial light modulator, which modulates the lights outputted along the first light path of the light division system;
• and
• a second spatial light modulator, which modulates at least a part of the lights outputted along the second light path of the light division system;
• wherein the wavelength conversion layer and the first light division device are fixedly connected and mounted on a color wheel;
• and
• wherein the light generating device further includes a light guiding device which guides the sequence of output lights from the first segment and the second segment of the wavelength conversion layer respectively to the first segment and the second segment of the first light division device.