Image display apparatus and control method

摘要

There is provided an image display apparatus including: a light source unit; at least one light modulation device configured to modulate light from the light source unit, and to emit a modulated light beam; and a sensor configured to receive diffracted light of the modulated light beam emitted from the at least one light modulation device, and to measure intensity of the modulated light.

主权项

1. An image display apparatus, comprising:
a light source; at least one light modulation device configured:
to modulate light from the light source, andto emit a modulated light beam; and a sensor configured:
to receive diffracted light of the modulated light beam emitted from the at least one light modulation device, andto measure intensity of the modulated light beam, wherein the light source is capable of emitting the light containing red light, green light, and blue light, the at least one light modulation device includes three light modulation devices, the three light modulation devices being configured to modulate the red light, the green light, and the blue light, respectively, the image display apparatus further comprises a synthesizer, the synthesizer being configured to synthesize red modulated light, green modulated light, and blue modulated light modulated by the three light modulation devices, the sensor is configured:
to receive the diffracted light of the modulated light beam synthesized by the synthesizer, andto measure intensity of the red modulated light, the green modulated light, and the blue modulated light, and the sensor includes:
a plurality of sensor devices capable of measuring intensity of incident light, anda plurality of filters arranged on the plurality of sensor devices, respectively, the plurality of filters being configured to transmit light having a predetermined wavelength band.