Image display apparatus including a controller that controls a light amount regulating film based on an amount of extraneous light received by a light receiving element

An image display apparatus comprising:

• a laser source for emitting ultraviolet or blue display-use laser light having a wavelength of 420 nm or less;
• a display unit including a fluorescent light generating section for generating fluorescent light when irradiated with the display-use laser light, wherein said display unit displays an image using the fluorescent light generated by said fluorescent light generating section,
• a controller for controlling a light amount regulating film;
• and
• a light receiving element provided on a back side of said fluorescent light generating section;
• wherein said display unit further includes an extraneous light shielding section for shielding an extraneous light which is emitted from a back side of said display unit and which has a wavelength in a range where the fluorescent light is generated so as to prevent said extraneous light from entering in said fluorescent light generating section, and said light amount regulating film formed on the back side of said fluorescent light generating section for adjusting the amount of the extraneous light which reaches said fluorescent light generating section;
• and
• said controller controls said light amount regulating film based on the amount of the extraneous light received by said light receiving element, thereby adjusting the amount of the extraneous light to be transmitted through said light amount regulating film.