Patent ID: 9621863
Date: 2017-04-11
CPC Classifications: G03B,H04N

Claim:
1. A projector comprising: a projecting unit including a plurality of laser light sources, a modulating unit configured to modulate lights emitted by the plurality of laser light sources, and a light splitting unit configured to (i) receive the light emitted by one of the plurality of laser light sources, (ii) split the received light according to wavelength components, and (iii) output the split light to the modulating unit, the projecting unit projecting modulated light modulated by the modulating unit; an optical system configured to optically change a projection state of the modulated light projected from the projecting unit; an optical-system adjusting unit configured to change a state of the optical system; a storing unit configured to store states of the optical system and adjustment values of light emission amounts of the respective laser light sources for adjusting white balance of the modulated light in association with each other; a light-emission-amount adjusting unit configured to adjust, on the basis of the adjustment values corresponding to the states of the optical system, the light emission amounts of the respective laser light sources by changing at least one signal that is input into a laser light source driver of a said laser light source, and a control unit configured to generate a control signal input for the light-emission-amount adjusting unit, the light-emission-amount adjusting unit being configured to adjust the light emission amounts of the respective laser light sources on the basis of the control signal input from the control unit, and the control unit being configured to adjust, when the optical system is adjusted by the optical-system adjusting unit to a specific state stored in the storage unit in association with the adjustment values, the light emission amounts of the laser light sources using the light-emission-amount adjusting unit on the basis of the adjustment values stored in the storing unit and adjust, when the optical system is adjusted to a state other than the specific state by the optical-system adjusting unit, the light emission amounts of the laser light sources using the light-emission-amount adjusting unit on the basis of an estimated value calculated from the adjustment values stored in the storing unit.