Patent ID: 8643393
Filing Date: 2014-02-04
Classification: G01R

Abstract:
1. An electrical connecting apparatus, comprising: a supporting body having a lower surface; a plurality of contacts arranged on said lower surface of said supporting body; a mark that is provided at a lower portion or a lower side of said supporting body and whose light passing feature differs from that of an area adjacent to said mark; and a light source provided in said supporting body to irradiate said mark with incident light from an upper side of said mark; wherein the differences between the amount of incident light transmitted from the light source through said mark and the amount of light transmitted from the light source through said area adjacent to said mark are detected; wherein said supporting body has a recess opened toward said mark, and said light source is arranged in said recess; wherein said supporting body includes a ceramic board and a sheet-like board having a lower surface on said contacts are arranged and arranged to be piled on a lower surface of said ceramic board, and wherein said mark is provided on said lower surface of said sheet-like board, and said ceramic board has said recess.