| 摘要 |
<p>PURPOSE: To scan a monitor region quasi-continuously and to monitor it by allowing a row of light emitting diodes that are scanned periodically to form images on the focal surface of a first concave mirror by the first concave mirror within the focal surface where an objective lens is arranged by expansion. CONSTITUTION: For example, a row of light emitting diodes 11 are arranged at a position away from an objective lens 12 by a distance FO. The lens 12 has a strip shape being extended in parallel with a row of diodes 11 for making parallel light beams 29 generated from each diode 11'. A diaphragm 20 with holes are positioned at the opposite side of the lens 12 while being separated by a focal length FO similarly and determines an angle sectionβof the beams 29. Therefore, the size of the diaphragm 20 determines the diameter of parallel light beams 29 that are extended to a strip-shaped concave mirror 14 from the lens 12. The mirror 14 is arranged while being separated from the diaphragm 20 by a focal length FH. A row of diodes 11 generate light points on a row of diodes that move one edge to the other edge. In this manner, the light beams 28 are focused as reflection beams 21 and an enlarged image of individual diode appears on a focal surface.</p> |
