| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and a device of producing parallel rays the luminance of which can be adjusted. SOLUTION: In the method, luminance of a light source is preset by luminance setting, the luminance of the light source is inspected and measured with the use of a sensor unit, which is transmitted to a control unit through a coefficient conversion unit, which then compares the present luminance value with the preset value, and the present luminance value of the light source is adjusted by a luminance adjusting unit. Through a lamp box with an elongaged hole equipped with a stage yet higher slim lens, a light source of elongated shape is placed at the focal point of the lens in the lamp box, and the light source produces parallel rays with higher intensity and longer irradiation distance (5 to 50 cm) through the elongated lens. Since automatic adjustment control is adopted, the intensity of the parallel rays can be set according to the environmental demands, and the stability of luminance can be maintained through automatic adjustment. The parallel rays, thus produced, have high luminance (5 to 10 times that in prior art), long distance (longer by not less than 5 times than the length obtained by the conventional technology), stable luminance, and ability to control on real-time basis. COPYRIGHT: (C)2007,JPO&INPIT |
