METHOD AND DEVICE FOR IMAGING LIQUID-FILLED CONTAINER

摘要

A device comprising a light-emitting device (2) and a light-receiving device (3) so as to image a liquid-filled container (B) by projecting light from the light-emitting device (2) to the liquid-filled container (B) and by receiving light transmitted through the liquid-filled container (B) by means of the light-receiving device (3) and a method for imaging the liquid-filled container (B) are disclosed. The liquid level of the liquid in the container can be accurately measured and a foreign matter mixed in the liquid or container or in the material of the container can be reliably detected even if the color of the container is, not to mention a transparent container, a dark one such as black, dark green, or dark brown, the container is frosted, or the color of the liquid in the container is a dark one. The light-emitting device (2) emits near-infrared light and the light-receiving device (3) receives near-infrared light so as to image the container (B).