Patent ID: 8167439
Filing Date: 2012-05-01
Classification: H04N

Abstract:
1. An image forming device comprising: a light valve element which is configured to divide one field of a color image to sectors corresponding to primary colors different from each other and is configured to form an image corresponding to each primary color during a period of each sector; light sources which are configured to irradiate lights of the primary colors to the light valve element during the periods of the respective sectors; a light emission control unit which is configured to output light emission signals to the light sources for controlling light emission quantities of the light sources and for controlling the light sources to sequentially emit light of the primary colors by time division during the periods of the respective sectors; and an image control signal outputting unit which is configured to receive inputting image signals and is configured to output control signals to the light valve element, the image forming device being configured to form the color image by temporal color mixing and being configured to make brightness within the color image more uniform, wherein each light emission signal which the light emission control unit outputs has, during a period of said one field, a primary color light emission period in which one of the light sources is made to emit light of its corresponding primary color and a high-brightness light emission period in which the light sources are made to emit light of their corresponding primary color, and each control signal which is outputted by the image control signal outputting unit includes a signal for forming the image by controlling light quantity of light emitted from the primary color light source during the primary color light emission period and a light quantity correction signal for correcting light quantity of the image based on a position of a pixel in the light valve element during the high-brightness light emission period, and wherein the image control signal outputting unit is configured to acquire the light quantity correction signals from a position light quantity storage which records a relationship between positions of the pixels and the light quantity correction signals, and outputs the light quantity correction signals to the light valve element.