Abstract: A head-up display system includes a display unit and a reflective element. The display unit having a first and a second display areas includes a display panel, a first light source module, and a second light source module. The display panel has a first and a second pixel areas. The first and the second light source modules respectively provide a first and a second light sources. The first light source corresponds to the first pixel area to make the first display area display a first image frame. The second light source corresponds to the second pixel area to make the second display area display a second image frame. The reflective element is located on a transmission path of the first image frame and not located on a transmission path of the second image frame, and reflects the first image frame from the first display area to a target element.

Abstract: A head-up display system includes a display unit and a reflective element. The display unit having a first and a second display areas includes a display panel, a first light source module, and a second light source module. The display panel has a first and a second pixel areas. The first and the second light source modules respectively provide a first and a second light sources. The first light source corresponds to the first pixel area to make the first display area display a first image frame. The second light source corresponds to the second pixel area to make the second display area display a second image frame. The reflective element is located on a transmission path of the first image frame and not located on a transmission path of the second image frame, and reflects the first image frame from the first display area to a target element.

Abstract: The invention provides a projector and a brightness adjusting method thereof. The projector includes a light source module, a color wheel module, a brightness adjusting device, and a brightness processing module. The light source module is used for emitting a light beam. The color wheel module is used for being excited to generate at least one color light beam by the light beam emitted from the light source module. The brightness adjusting device includes a light sensor and a brightness processing module, wherein the light sensor is disposed on a transmission path of a portion of the color light beam and the brightness processing module is electrically connected to the light sensor for adjusting the brightness value of the color light beam. The brightness adjusting method of projector is also provided.

Abstract: The invention provides a projector and a brightness adjusting method thereof. The projector includes a light source module, a color wheel module, a brightness adjusting device, and a brightness processing module. The light source module is used for emitting a light beam. The color wheel module is used for being excited to generate at least one color light beam by the light beam emitted from the light source module. The brightness adjusting device includes a light sensor and a brightness processing module, wherein the light sensor is disposed on a transmission path of a portion of the color light beam and the brightness processing module is electrically connected to the light sensor for adjusting the brightness value of the color light beam. The brightness adjusting method of projector is also provided.