Abstract: On the occasion of transmitting an image information from an image information generating unit to an image information output unit, an image file is composed of an image data (RGB data) used to display an image on a display of the image information generating unit, a color value data (XYZ data in accordance with the CIE) obtained by actually measuring at least one color of the image displayed on the display, a data on a position in the image where color measurement was performed, and a data (including image data format) of an information on the entire image file. In the image information output unit, the color value of the image displayed based on the image data is measured by means of a colormeter, and the displayed color can be adjusted to a color intended by an image creator by correcting the image data while comparing the obtained measurement value and the received color value data.

Abstract: An optical measuring apparatus used for measuring optical characteristics of a liquid crystal display panel (LCD panel) in a calibration thereof comprises a housing having a contacting portion directly contacting a surface of the LCD panel and disposed far from a region on the LCD panel to be measured. An optical system and a photosensor is provided in the housing with a predetermined positional relation, so that ambient illumination is shielded by the housing and stray rays emitted from the LCD panel and having exit angles larger than a predetermined maximum exit angle &agr; are restricted by the optical system.