Projector, color correction system, and control method of projector

A color correction system comprising:

• a projector including
• a solid light source that emits first color light,
• a light source optical system that obtains color light having a predetermined color by causing the first color light emitted by the solid light source to abut against a phosphor, and separates the color light having the predetermined color into second color light and third color light by spectrally dividing the obtained color light having the predetermined color,
• an optical modulation unit that modulates the first color light, the second color light, and the third color light, and
• a projection unit that projects image light obtained by composing the first color light, the second color light, and the third color light modulated by the optical modulation unit, onto a projection surface;
• a measurement unit that measures a color of an image formed on the projection surface by the image light, in terms of a plurality of colors constituting a first color system and at least one of colors constituting a second color system;
• and
• a correction parameter generation device that generates a correction parameter based on a conversion value and a second measurement value of at least the one of the colors constituting the second color system, which is measured by the measurement unit, the conversion value being obtained by converting a first measurement value of the color in the first color system, which is measured by the measurement unit, into the color in the second color system, wherein
• the measurement unit includes an optical filter having transmittance characteristics corresponding to spectral characteristics of the first color light, in a wavelength range of the first color light.

A control method of a projector that modulates first color light emitted by a solid light source, second color light obtained based on the first color light, and third color light and projects image light obtained by composing the modulated first color light, second color light, and third color light onto a projection surface, the method comprising:

• measuring a color of an image formed on the projection surface by the image light in terms of a plurality of colors constituting a first color system and at least one of colors constituting a second color system, by a measurement unit;
• and
• generating a correction parameter based on a conversion value and a second measurement value of at least the one of the colors constituting the second color system, which is measured by the measurement unit, the conversion value being obtained by converting a first measurement value of the color in the first color system, which is measured by the measurement unit, into the color in the second color system, wherein
• in the measuring of the color, the color is measured in terms of at least the one of the colors constituting the second color system, by the measurement unit including an optical filter having transmittance characteristics corresponding to spectral characteristics of the first color light, in a wavelength range of the first color light.

A projector comprising:

• a solid light source that emits first color light;
• a light source optical system that obtains color light having a predetermined color by causing the first color light emitted by the solid light source to abut against a phosphor, and separates the color light having the predetermined color into second color light and third color light by spectrally dividing the obtained color light having the predetermined color;
• an optical modulation unit that modulates the first color light, the second color light, and the third color light;
• a projection unit that projects image light obtained by composing the first color light, the second color light, and the third color light modulated by the optical modulation unit, onto a projection surface;
• and
• a correction parameter generation unit that generates a correction parameter based on a conversion value and a second measurement value of at least one of colors constituting second color system, which is measured by a measurement unit, the conversion value being obtained by converting a first measurement value of a color in a first color system, which is measured by the measurement unit, into the color in the second color system, the measurement unit measuring a color of an image formed on the projection surface by the image light, in terms of a plurality of colors constituting the first color system and at least the one of the colors constituting the second color system, wherein
• the measurement unit includes an optical filter having transmittance characteristics corresponding to spectral characteristics of the first color light, in a wavelength range of the first color light.