Reflective sensor, filter for reflective sensor, and method...

Details Reflective sensor, filter for reflective sensor, and method... Reflective sensor, filter for reflective sensor, and method...

2006-02-07

2006-02-07

Le, Que T. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Housings

C250S559400

Reexamination Certificate

active

06995358

ABSTRACT:
A reflective sensor detects the presence of a subject at a detecting position. The sensor has a sensor portion and a filter. The sensor portion includes a light-emitting element that emits light at the detecting position and a light-receiving element that receives light reflected from the subject, and generates an electrical signal corresponding to a quantity of received light. The filter is between the sensor portion and the detecting position, is made of a material that transmits light heading to the detecting position from the light-emitting element and light heading to the light-receiving element from the subject, and prevents intrusion of dust. A filter surface facing the sensor portion is tapered and has an inclined plane opposing the light-emitting element, another inclined plane opposing the light-receiving element, and a ridge portion where the inclined planes meet. The ridge portion extends between the light-emitting element and the light-receiving element.

REFERENCES:
patent: 4833336 (1989-05-01), Kraske
patent: 5172003 (1992-12-01), Nasu et al.
patent: 62-119983 (1987-06-01), None
patent: 4-191691 (1992-07-01), None
patent: 4-103665 (1992-09-01), None
patent: 11-049405 (1999-02-01), None
patent: 2003-207578 (2003-07-01), None

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