Surface mount type photo-interrupter and method for...

Details Surface mount type photo-interrupter and method for... Surface mount type photo-interrupter and method for...

2006-07-13

2008-11-18

Epps, Georgia Y (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Signal isolator

C257S082000

Reexamination Certificate

active

07453079

ABSTRACT:
A surface mount type photo-interrupter includes an insulating base, a light emitting element and a light receiving element provided on the insulating base, a first terminal electrode for the light emitting element, a second terminal electrode for the light receiving element, a first primary mold which is transparent and covers the light emitting element, a second primary mold which is transparent and covers the light receiving element, and a secondary mold which is opaque and fixes the first and second primary molds. Each of the first and second terminal electrodes is formed at a side surface and/or a lower surface of the insulating base. The secondary mold is provided with a groove located between the first and second primary molds. Light from the light emitting element passes across the groove to reach the light receiving element.

REFERENCES:
patent: 4933729 (1990-06-01), Soejima et al.
patent: 5214495 (1993-05-01), Kitanishi
patent: 5291038 (1994-03-01), Hanamoto et al.
patent: 5436472 (1995-07-01), Ogawa
patent: 5783836 (1998-07-01), Liu et al.
patent: 2002/0088981 (2002-07-01), Suzuki
patent: 2005/0029435 (2005-02-01), Ogawa
patent: 2005/0056796 (2005-03-01), Takeuchi
patent: 6-350129 (1994-12-01), None

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