US Patent 9674494 Image display apparatus, light source apparatus, and optical unit

An image display apparatus includes a laser light source, a light modulator, a first sensor, a second sensor, a third sensor, and circuitry. The light modulator generates an image based on light from the laser light source. The first sensor measures a first temperature in a vicinity of an air inlet of a housing of the image display apparatus. The second sensor measures a second temperature associated with the laser light source. The third sensor measures a third temperature associated with the light modulator. The circuitry is configured to control output of the laser light source based on at least one of the first, second, or third temperatures.