| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an illumination apparatus for imaging for an electronic component mounter, capable of meeting the demands for a making compact apparatus by reducing the dimension of a height direction. <P>SOLUTION: An illumination unit 30, for emitting a light to a substrate as an imaging target with a camera 25 in the electronic component mounter, has a configuration in which a planar illumination substrate 31 is principally used and upper stage illumination light source sections 32a, intermediate stage illumination light source sections 32b and lower stage illumination light source sections 32c are disposed orderly toward the outside around an opening portion 31a for imaging on the surface of the illumination substrate 31 which opposes the substrate, illumination lights are emitted to the surface of the substrate at different illumination angles, wherein the lower stage illumination light source sections 32c having the lowest illumination angle are disposed on only four diagonal positions in a rectangular range A centered about an imaging optical axis a. According to this configuration, bulging dimension of each of the light source sections 32c can be suppressed, as much as possible, to reduce the planar occupied dimension, and thereby can meet the demands of compact. <P>COPYRIGHT: (C)2008,JPO&INPIT |
