Image projection apparatus for adjusting white balance in consideration of temperature and light level of LED and method thereof

A method of adjusting a white balance of an image projection apparatus comprising a light source unit sequentially emitting lights generated by light emitting elements, wherein light levels of the light emitting elements change depending on changes in temperature, and an image generation unit for generating an image using the lights sequentially emitted from the light source unit and projecting the image, the method comprising:

• a) measuring a temperature of the light source unit;
• b) measuring levels of lights generated by the light emitting elements if the measured temperature of the light source unit exceeds a threshold,;
• and
• c) controlling a driving operation of one of the light source unit and the image generation unit based on the measured light levels and thereby adjusting a white balance of the image projected from the image generation unit.

An image projection apparatus comprising:

• a light source unit for sequentially emitting lights generated by light emitting elements, wherein light levels of the light emitting elements change depending on changes in temperature;
• an image generation unit for generating an image using the lights sequentially emitted from the light source unit and projecting the image;
• a driving unit for driving the light source unit and the image generation unit;
• a temperature sensor for measuring a temperature of the light source unit;
• a light sensor for measuring levels of light generated by the light emitting elements;
• and
• a controller for controlling a driving operation of the driving unit based on the levels of light measured by the light sensor if the temperature of the light source unit measured by the temperature sensor exceeds a threshold, and adjusting a white balance of the image projected from the image generation unit.