Device for optical measurement of the contours of the specimens in a gas-tight manner at high temperatures in a closed tube furnace

摘要

Device for optical measurement of the contours of the specimens in the case of high temperatures in a gas-tight closed tube furnace, in the light is irradiated from one side during the shadow of the probe of the other side is observed, in the case of the• the specimen is of one side by one or more in the short-wave range emitting illumination means is illuminated, while the consideration of the contour by a for the same frequency range which is transparent to the narrow band filter, which is placed on the opposite side in front of a pick-up device is arranged, or is arranged within a recorder,• the specimen (1) on a base (2) which lies on two ceramic rods (3) rests in turn with a small clearance of one tube (6) are mounted about an axis (7) perpendicular to the furnace axis (8) can be rotated,• this tube (6) via a linear guide (10) can be guided, and• the illumination means, together with the tube (6) movable..