A luminance measurement method, comprising: a) an alignment step to determine a positional correspondence between pixels of a display panel and picture elements of a camera provided with a solid-state image sensor, said alignment step comprising imaging by the camera an alignment pattern (P A) of turned on predetermined pixels displayed on the display panel and detecting, based on the imaged image, on which picture elements on an imaging surface of the camera the image of the predetermined pixels is shown, the display panel and the camera being configured such that each pixel image, corresponding to the image of one pixel of the display panel on the imaging surface of the camera, ranges over a plurality of picture elements (9a-9p) of the camera, b) a step of displaying sequentially on the display panel a plurality of measurement patterns (P1-P16), wherein in each measurement pattern one or more pixels are turned on such that pixel images corresponding to said one or more pixels on the imaging surface of the camera do not overlap each other and each pixel of the display panel is turned on once in the plurality of measurement patterns, and c) performing, for each displayed measurement pattern, the steps of c1) imaging, in an unfocused state of the camera, the displayed measurement pattern and determining, for each pixel image, an entire luminance of said each pixel image, c2) imaging (S9-S12), in a focused state of the camera, the displayed measurement pattern, determining, for each pixel image, the luminance of a central part and the luminance of a peripheral part of said each pixel image, c3) calculating (S9-S17), for each pixel image, a central exposure factor that indicates the luminance of a central part of a pixel image as a percentage of the entire luminance of the pixel image and a peripheral exposure factor that indicates the luminance of a peripheral part of the pixel image as a percentage of the luminance of the entire pixel image, wherein the pixel image, in an unfocused state of the camera, ranges over a larger number of picture elements than in a focused state of the camera, and d) a step of turning on all the pixels of the display panel, and imaging the pixels by the camera, and e) a step of calculating the luminance of all the pixels of the display panel on the basis of the image imaged when all pixels are turned on, the central exposure factors and the peripheral exposure factors. a) an alignment step to determine a positional correspondence between pixels of a display panel and picture elements of a camera provided with a solid-state image sensor, said alignment step comprising imaging by the camera an alignment pattern (P A) of turned on predetermined pixels displayed on the display panel and detecting, based on the imaged image, on which picture elements on an imaging surface of the camera the image of the predetermined pixels is shown, the display panel and the camera being configured such that each pixel image, corresponding to the image of one pixel of the display panel on the imaging surface of the camera, ranges over a plurality of picture elements (9a-9p) of the camera, b) a step of displaying sequentially on the display panel a plurality of measurement patterns (P1-P16), wherein in each measurement pattern one or more pixels are turned on such that pixel images corresponding to said one or more pixels on the imaging surface of the camera do not overlap each other and each pixel of the display panel is turned on once in the plurality of measurement patterns, and c) performing, for each displayed measurement pattern, the steps of c1) imaging, in an unfocused state of the camera, the displayed measurement pattern and determining, for each pixel image, an entire luminance of said each pixel image, c2) imaging (S9-S12), in a focused state of the camera, the displayed measurement pattern, determining, for each pixel image, the luminance of a central part and the luminance of a peripheral part of said each pixel image, c3) calculating (S9-S17), for each pixel image, a central exposure factor that indicates the luminance of a central part of a pixel image as a percentage of the entire luminance of the pixel image and a peripheral exposure factor that indicates the luminance of a peripheral part of the pixel image as a percentage of the luminance of the entire pixel image, wherein the pixel image, in an unfocused state of the camera, ranges over a larger number of picture elements than in a focused state of the camera, and c1) imaging, in an unfocused state of the camera, the displayed measurement pattern and determining, for each pixel image, an entire luminance of said each pixel image, c2) imaging (S9-S12), in a focused state of the camera, the displayed measurement pattern, determining, for each pixel image, the luminance of a central part and the luminance of a peripheral part of said each pixel image, c3) calculating (S9-S17), for each pixel image, a central exposure factor that indicates the luminance of a central part of a pixel image as a percentage of the entire luminance of the pixel image and a peripheral exposure factor that indicates the luminance of a peripheral part of the pixel image as a percentage of the luminance of the entire pixel image, d) a step of turning on all the pixels of the display panel, and imaging the pixels by the camera, and e) a step of calculating the luminance of all the pixels of the display panel on the basis of the image imaged when all pixels are turned on, the central exposure factors and the peripheral exposure factors.