An image display device connectable to an information communication terminal capable of transmitting and receiving image data, the image display device comprising: a display unit that is arranged to display an image; an optical system that is arranged to optically process an image output from the r display unit enabling a user to view the display image as an enlarged virtual image; sensors that are arranged to detect information related to the image display device and the user of the image display device, wherein the sensors are environmental sensors providing environmental information and status sensors providing status information of the user; a property information storage unit that is arranged to store property information related to the display unit, the optical system, and the sensors; and a control unit that includes a transmitting unit that is arranged to transmit the property information to the information communication terminal and a receiving unit that is arranged to receive information or an image processed on the basis of the property information on the information communication terminal side, and causes the display unit to display the processed image, characterized in that the image display device is a micro-display, wherein the property information is environmental information about the environment surrounding the image display device acquired from the environmental sensors, correction information including calibration information, correction coefficients, and correction algorithms for the status information acquired by the status sensors, and correction information including calibration information, correction coefficients, and correction algorithms for correcting sensor output information from an environmental sensor or a status sensor, wherein the property information further is correction information for color irregularity correction due to the Optical properties of the virtual image optical unit, or correction information for image correction corresponding to the micro-display. a display unit that is arranged to display an image; an optical system that is arranged to optically process an image output from the r display unit enabling a user to view the display image as an enlarged virtual image; sensors that are arranged to detect information related to the image display device and the user of the image display device, wherein the sensors are environmental sensors providing environmental information and status sensors providing status information of the user; a property information storage unit that is arranged to store property information related to the display unit, the optical system, and the sensors; and a control unit that includes a transmitting unit that is arranged to transmit the property information to the information communication terminal and a receiving unit that is arranged to receive information or an image processed on the basis of the property information on the information communication terminal side, and causes the display unit to display the processed image, characterized in that the image display device is a micro-display, wherein the property information is environmental information about the environment surrounding the image display device acquired from the environmental sensors, correction information including calibration information, correction coefficients, and correction algorithms for the status information acquired by the status sensors, and correction information including calibration information, correction coefficients, and correction algorithms for correcting sensor output information from an environmental sensor or a status sensor, environmental information about the environment surrounding the image display device acquired from the environmental sensors, correction information including calibration information, correction coefficients, and correction algorithms for the status information acquired by the status sensors, and correction information including calibration information, correction coefficients, and correction algorithms for correcting sensor output information from an environmental sensor or a status sensor, wherein the property information further is correction information for color irregularity correction due to the Optical properties of the virtual image optical unit, or correction information for image correction corresponding to the micro-display. correction information for color irregularity correction due to the Optical properties of the virtual image optical unit, or correction information for image correction corresponding to the micro-display.