Abstract: A prepreg cutting method is provided that cuts prepreg without applying any processing, such as heating, to that part of prepreg other than the place to be cut. When prepreg formed by impregnating a base material with a resin and left to semi-harden is to be cut into a specified dimension, the surface of the prepreg is irradiated with a laser beam so that the resin of the irradiated portion is softened while the laser beam irradiating position is shifted on the prepreg, and the softened resin part is cut by a cutting blade. Because the cutting blade cuts the prepreg portion where the resin has softened, resin dust will not scatter.

Abstract: A prepreg cutting method is provided that cuts prepreg without applying any processing, such as heating, to that part of prepreg other than the place to be cut. When prepreg formed by impregnating a base material with a resin and left to semi-harden is to be cut into a specified dimension, the surface of the prepreg is irradiated with a laser beam so that the resin of the irradiated portion is softened while the laser beam irradiating position is shifted on the prepreg, and the softened resin part is cut by a cutting blade. Because the cutting blade cuts the prepreg portion where the resin has softened, resin dust will not scatter.

Abstract: A stereoscopic display device in accordance with the present invention utilizes a display screen for displaying images for right and left eyes. The display device comprises: a drawing circuit which generates image data for the right and left eyes according to view point data including view point position and light of sight directions, and object data to be displayed; and image processing unit which determines an attention target object from the plurality of objects to be displayed according at least to the shortness of the distance from the view point position to the object position, modifies the line of sight directions for the images for the right and left eyes according at least to the distance of the attention target object, and provides view point data and object data to the drawing circuit, where the drawing circuit performs perspective conversion based on the modified line of sight directions.