Patent ID: 9052576
Filing Date: 2015-06-09
Classification: G03B,G09G,H04N,H05B

Abstract:
1. A projection apparatus comprising: a plurality of light emitting devices for respectively emitting lights of a plurality of colors; a projecting unit configured to form an optical image of a plurality of color components for each of a plurality of frames and sequentially projecting the optical image; a power control unit configured to adjust power to be supplied to the plurality of light emitting devices to correct a decrease in luminance due to heat generation in a field period of each of the plurality of light emitting devices; a storing unit which stores information for correcting a decrease in luminance due to heat generation in the field period of each of the plurality of light emitting devices, the information including current values of a current waveform corresponding to an elapsed time from a start of light emission of the plurality of light-emitting devices; and a selection unit configured to select a projection color mode from among a plurality of projection color modes, wherein the current values stored in the storing unit comprise respective current values for each of the plurality of projection color modes, wherein the power control unit adjusts each luminance of the plurality of light emitting devices by sequentially supplying the current values stored in the storing unit corresponding to the projection color mode selected by the selection unit, to the plurality of light emitting devices in accordance with the elapsed time from the start of light emission.