Patent ID: 8303362

Claim:
A manufacturing apparatus for a three-dimensional image display formed in a way that a display panel including a plurality of pixels arranged within a plain of the display panel, and a lens plate provided with a lenticular lens are bonded together so as to seal the lenticular lens therein, the lenticular lens including a plurality of cylindrical lenses sequentially arranged in a width direction orthogonal to a ridge direction of the cylindrical lenses, the manufacturing apparatus for a three-dimensional image display comprising: a decompression chamber; a decompressor configured to decompress inside of the decompression chamber; an image capture configured to capture an image of the display panel through the lens plate, the display panel bonded to the lens plate while being housed in the decompression chamber; and a control unit configured to control the display panel, the decompressor, and the image capture, wherein the control unit causes the display panel bonded to the lens plate while being housed in the decompression chamber to display an inspection chart designed to turn on a pixel row located in the center of a cylindrical lens width of each of the plurality of the cylindrical lenses, the control unit causes the image capture to capture images of the inspection chart a plurality of times along with an increase in a decompression degree inside the decompression chamber while causing the decompressor to decompress the inside of the decompression chamber in which the display panel bonded to the lens plate is housed, and the control unit obtains variance of luminance distribution in a direction orthogonal to the pixel row for each of the images captured by the image capture, then obtains change information of the variance that changes depending on a change in the decompression degree inside the decompression chamber, and obtains the decompression degree at a change point of the variance based on the obtained change information of the variance.