| 摘要 |
<P>PROBLEM TO BE SOLVED: To present the red background and green background of a red-green inspection visual target by brightness as equal as possible without increasing costs with a white LED as a light source. <P>SOLUTION: The visual target presentation apparatus for switching and arranging an inspection visual target for which various inspection visual targets including a prescribed visual target for a red-green inspection are formed in an optical path, switching and arranging a red filter and a green filter for dividing a presentation image in a presentation optical path, illuminating the red filter and the green filter from behind by an illumination light source and presenting the red-green inspection visual target having a visual target in the red background and the green background is provided with: the white LED as the illumination light source; and filters, as the red filter and the green filter, manufactured by using the ones on the market respectively and determining the thicknesses of both filters such that the thicknesses of both filters are the same and red and green visual characteristics when presenting the red-green inspection visual target by the illumination of the white LED are almost the same. <P>COPYRIGHT: (C)2008,JPO&INPIT |
