Patent ID: 6657712
Filing Date: 2003-12-02
Classification: G01J,G02F,H04N

Abstract:
A luminance measuring device for a liquid crystal display comprising:photometric means including: a contact type luminance meter; a light shielding cushion member surrounding a vicinity of a light receiving portion of the contact type luminance meter; and holding means for fixing the contact type luminance meter to the liquid crystal display such that the light shielding cushion member lightly presses onto a display surface of the liquid crystal display and a relationship between an orientation of a light receiving portion of the contact type luminance meter and an orientation of the liquid crystal display is kept constant; converting means for converting a first luminance measurement result by the contact type luminance meter into a second luminance measurement result corresponding to a telescopic luminance meter, said converting means previously being prepared from the first luminance measurement result by the contact type luminance meter and the second luminance measurement result by the telescopic luminance meter; and processing means for conducting conversion processing using the converting means to a luminance measurement result of the liquid crystal display by the photometric means.