To provide an optical sensor unit with decreased dispersion in optical coupling loss of the core of an optical waveguide unit and the optical element of a substrate unit.
An optical waveguide unit W2 having substrate unit engaging vertical grooves 60 and a substrate unit E2 having engagement plate portions 5a to be fitted in the vertical grooves 60 and projections P are individually produced, and the engagement plate portions 5a of the substrate unit E2 are, at each of the projections, brought into fitting engagement with the vertical grooves 60 of the optical waveguide unit W2. At this time, the projections P are deformed to accommodate the tolerances of the components, thereby preventing wobbling and warpage of the substrate unit E2. Further, the vertical grooves 60 of the optical waveguide unit W2 are formed in proper positions with respect to a light transmission face 2a of a core 2, and the engagement plate portions 5a of the substrate unit E2 are formed in proper positions with respect to the optical element 8. Therefore, the fitting engagement between the vertical grooves 60 and the engagement plate portions 5a permits proper positioning or automatic centering of the light transmission face 2a of the core 2 and the optical element 8.
| JP2009129324A | 2009-06-11 | |||
| JP2011033876A | 2011-02-17 | |||
| JPH07177086A | 1995-07-14 | |||
| JPH0628814U | 1994-04-15 | |||
| JPH1048478A | 1998-02-20 |
Iisaki Aika
Yuko Saito