Patent ID: 9592000
Date: 2017-03-14
CPC Classifications: A61B

Claim:
1. A biosensor comprising: a wiring board; a light emitting element and a light receiving element disposed on a principal surface of the wiring board; a light-emitting-element sealer disposed on the principal surface of the wiring board and adjacent to the light emitting element to seal the light emitting element; a light-receiving-element sealer disposed on the principal surface of the wiring board and adjacent to the light receiving element to seal the light receiving element; a light shielding portion disposed between the light-emitting-element sealer and the light-receiving-element sealer; a base medium with light transmitting properties, disposed in parallel with the wiring board with the light shielding portion therebetween; an adhesion layer with light transmitting properties disposed between the base medium and at least one of the light shielding portion, light-emitting-element sealer and the light-receiving-element sealer, and the adhesion layer provided to bond the base medium with the at least one of the light shielding portion, the light-emitting-element sealer portion and the light-receiving-element sealer, a plane electrode disposed on a principal surface of the base medium such that the plane electrode does not intersect either a line extending in a direction normal to the principal surface of the wiring board and through the light emitting element or a line extending in the direction normal to the principal surface of the wiring board and through the light receiving element, wherein end portions of the adhesion layer and end portions of the base medium do not overlap the light-receiving-element sealer and the light-emitting-element sealer, respectively, when viewed from the direction normal to the principal surface of the wiring board.