| 摘要 |
<P>PROBLEM TO BE SOLVED: To photograph a component from two directions by a single photodetection camera without causing defects of image quality or the like. <P>SOLUTION: A component recognition device 8, which photographs the electronic component 2 held by a mounting head 6 by the single photodetection camera 20, includes a condenser lens 25 and an image sensor 28 and recognizes the holding state of the electronic component 2 based upon obtained images. The recognition device 8 is configured to picks up the first image and second image of the electronic component 2 by making the image sensor 28 receive a first light beam L1 emitted from a surface of the electronic component 2 in a first direction and a second light beam L2 emitted in a second direction while making them incident on the condenser lens 25. The photodetection camera 20 is so arranged that an image obtained by receiving a light beam having a shorter geometric optical path length up to the condenser lens among the first and second light beams L1 and L2 is visually focused, and a medium B of ≥1 in refractive index is provided on the optical path of the light beam having a longer geometric optical path length to transmit the light beam having the longer geometric optical path length through the medium while refracting it on a boundary surface, thereby putting the other image in focus. <P>COPYRIGHT: (C)2009,JPO&INPIT |
