Light-beam emitter and display device

A display device, comprising a display panel and a light-beam emitter, wherein the display panel comprises a display screen and a photosensitive device configured to sense a projected beam projected on the display panel by the light-beam emitter, wherein the light-beam emitter comprises:

• a main body;
• a light-emitting assembly disposed on the main body;
• a projection button and an operation button disposed on the main body;
• and
• a control assembly disposed on the main body;
• wherein the control assembly is connected to the projection button, the operation button, and the light-emitting assembly, the control assembly is configured to control the light-emitting assembly to emit a projection beam when the projection button is pressed, and the control assembly is configured to control the light-beam emitter to perform a corresponding operation when the operation button is pressed;
• the light-emitting assembly comprises a light source and a filter disposed on a light-exiting side of the light source, and the filter is connected to the main body by rotating around a central axis of the main body.