Patent ID: 6348787
Filing Date: 2002-02-19
Classification: G01R

Abstract:
An electronic probe comprising:a probe body having a base terminal and an end terminal wherein a light path is formed between the base terminal and the end terminal; a laser diode disposed at an end of the light path on a side of the base terminal; an electrooptic element disposed at a second end of the light path on a side of the end terminal; a reflecting film formed at an end surface of the electrooptic element on a side of the end terminal; the end terminal having a probe head member supporting the electrooptic element from at least a side of the end terminal; a metallic pin having an inserted part inserted in an insertion hole formed in the probe head member so that an end of the metallic pin contacts the reflecting film and a second end of the metallic pin projects from the probe head member; wherein a laser beam emitted from the laser diode is incident on the electrooptic element via the light path, an incident beam is reflected by the reflecting film, and a reflected light is separated and converted into an electric signal; the radial dimension of the insertion hole being larger at an outer side of the insertion hole than that at an inner side of the insertion hole; the inserted part of the metallic pin having a shape conforming to the shape of the insertion hole, and an inner surface of the insertion hole contacting an outer surface of the inserted part of the metallic pin in order to prevent the metallic pin from moving toward the reflecting film.