Image display apparatus

An image display apparatus in which a liquid crystal panel having a display area is illuminated by a light source and a viewer sees an image displayed in the display area when illumination light passes through the liquid crystal panel and reaches an eye or eyes of the viewer, characterized in that the light source is configured in such a manner that lighting positions or lighted regions can be changed,

• the image display apparatus further comprising:
• optical means for converging light emitted from the light source and passes through the liquid crystal panel so that the light goes to a prescribed range;
• and
• lighting control means for performing a control of changing the lighting positions or lighted regions of the light source, the image display apparatus further characterized:
• in that a range defined by a viewing angle, from which an image displayed in the display area is viewable, is changed by the lighting control means's changing a diffusion range of light emitted from the light source,
• in that plural kinds of images that are different from each other in information content are displayed in the display area, and
• in that the optical means converges light coming from the light source so that images that are different from each other in information content are presented to viewers located at different viewing positions,
• the image display device further comprising:
• a viewing angle notification device for indicating a state of the viewing angle.

An image display apparatus in which a liquid crystal panel having a display area is illuminated by a light source and a viewer sees an image displayed in the display area when illumination light passes through the liquid crystal panel and reaches an eye or eyes of the viewer, characterized in that the light source is configured in such a manner that lighting positions or lighted regions can be changed,

• the image display apparatus further comprising:
• optical means for converging light emitted from the light source and passes through the liquid crystal panel so that the light goes to a prescribed range;
• and
• lighting control means for performing a control of changing the lighting positions or lighted regions of the light source,
• the image display apparatus further characterized:
• in that a range defined by a viewing angle, from which an image displayed in the display area, is viewable is changed by the lighting control means's changing a diffusion range of light emitted from the light source;
• and
• in that the light source comprises:
• a light-emitting element for emitting light, and
• polarizing means for transmitting toward the optical means, part of the light emitted from the light-emitting element, the part of the light emitted being light having a particular polarization direction and also being light whose polarization direction is perpendicular to the particular polarization direction;
• the image display apparatus further characterized by further comprising:
• filter means disposed between the liquid crystal display panel and the optical means and configured such that first regions for transmitting light having the particular polarization direction and second regions for transmitting light whose polarization direction is perpendicular to the particular polarization direction are arranged repeatedly in a prescribed direction;
• and
• a viewing angle notification device for indicating a state of the viewing angle.