| 摘要 |
PURPOSE:To simplify the mechanism of the titled device by providing the device with a mirror turning mechanism having a light emitting source generating parallel light and a means reflecting light emitted from said light emitting source, rotating a mirror for the optical scanning of a substance to be measured and measuring the rotational angle. CONSTITUTION:Light emitted from the light source 21 fitted to a moving board 2 is irradiated to the substance 1 to be measured by a rotary mirror 22 to be repeatedly rotated and horizontally scanned. A part of the reflected light from the substance 1 to be measured is returned to the rotary mirror 22, made incident on a condensor 23 and then formed on a CCD which is an one-dimensional sensor. If the substance 1 to be measured is located on a far place, the image is formed on the upper part of the sensor 24, and in case of a near place, the image is formed on the lower part. Therefore, the position of the substance to be measured can be measured by the image formation position. In said constitution, the mechanism can be simplified as compared with an ordinary method. |
