| 摘要 |
PURPOSE: A device for measuring an angle of a powder stacked layer is provided to prevent lights except for lights emitted by a back light panel being incident to a camera, thereby obtaining silhouette images of an accurate shape. CONSTITUTION: A device for measuring an angle of a powder stacked layer comprises a camera, a back light panel(30), a powder stacked layer supporting device, and an image analyzer. The back light panel is arranged in a position facing the camera. The powder stacked layer supporting device is arranged in between the camera and back light panel. The image analyzer analyzes silhouette images of a powder stacked layer photographed by the camera, thereby obtaining an angle of the power stacked layer. An optical filter is assembled in the camera. The optical filter has high transmission ratio with respect to a peak of a light emitting spectrum of the back light panel.
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