Projector, projection control method, and storage medium

A projection control method for a projector,

• the projector comprising:
• a first light source device configured to emit light in a first wavelength range;
• a first wheel on which a plurality of light source segments are formed, the plurality of light source segments being configured to emit lights in different wavelength ranges upon receiving light in the first wavelength range shined thereon;
• a second wheel on which a plurality of areas are formed, the plurality of areas being configured to dim light emitted from the first wheel;
• and
• a display device onto which light emitted from the second wheel is shined to thereby form image light;
• the projection control method comprising:
• a processor configured to control the first light source device, the first wheel and the second wheel in a synchronized fashion and to perform a masking process on the image light when either or both of a rotation frequency difference and a phase shift between the first wheel and the second wheel are equal to or greater than predetermined thresholds.

A non-transitory storage medium that can be read by a computer, the computer comprising:

• a first light source device configured to emit light in a first wavelength range;
• a first wheel on which a plurality of light source segments are formed, the plurality of light source segments being configured to emit lights in different wavelength ranges upon receiving light in the first wavelength range shined thereon;
• a second wheel on which a plurality of areas are formed, the plurality of areas being configured to dim light emitted from the first wheel;
• and
• a display device onto which light emitted from the second wheel is shined to thereby form image light;
• the storage medium configured to cause the computer to function as a processor configured to control the first light source device, the first wheel and the second wheel in a synchronized fashion and to perform a masking process on the image light when either or both of a rotation frequency difference and a phase shift between the first wheel and the second wheel are equal to or greater than predetermined thresholds.