Tdk Corporation

Yoshihiro Onozeki

Toru Mizuno

Masashi Gotoh

Jitsuo Kanazawa

Koichiro Okazaki

Masaaki Kaneko

Hitoshi Nakayama

Shinji Atsuzawa

Masanori Gotoh

An object of the present invention is to provide an element connecting apparatus with which the position of a core of each element in an optical transmission module in a short time with high accuracy. To attain the object, in a core position detection method according to the present invention, upon detecting a core of a PLC chip, parallel light is made incident on the output side end face of the PLC chip, so that the core position is detected based on an image of the input side end face obtained with the parallel light. In addition, the core position is detected by an image of the output side end face that is obtained while parallel light is made incident on the input side end face.

Method and apparatus for connecting optical transmission module and core position detection method for optical waveguide

A chip junction nozzle in that opposite slant planes which come into contact with edges of 2 sides of the chip in parallel centering around a nozzle center, and a vacuum suction hole opened in the nozzle center are provided, and the slant plane is formed into a mirror surface having the surface hardness more than HrC40. Further, when the surface roughness of the mirror surface is expressed by the average roughness of the center line, the average roughness of the center line is not more than 1.6 &mgr;m.

Chip junction nozzle

A chip junction nozzle in that opposite slant planes,which come into contact with edges of 2 sides of the chip in parallel centering around a nozzle center, and a vacuum suction hole,opened in the nozzle center are provided, and the slant plane,is formed into a mirror surface having the surface hardness more than HrC40. Further, when the surface roughness of the mirror surface is expressed by the average roughness of the center line, the average roughness of the center line is not more than 1.6 &mgr;m.

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Tokyo, Japan

Yoshihiro Onozeki