| US 7,518,098 B2 | ||
| Optoelectronic dust sensor device | ||
| Bernd Mack, Esslingen (Germany) | ||
| Assigned to Odelo GmbH, Esslingen (Germany) | ||
| Filed on Jul. 28, 2005, as Appl. No. 11/191,872. | ||
| Claims priority of application No. 10 2004 038 422 (DE), filed on Jul. 30, 2004. | ||
| Prior Publication US 2006/0022836 A1, Feb. 02, 2006 | ||
| Int. Cl. H01J 40/14 (2006.01); G02B 27/00 (2006.01) | ||
| U.S. Cl. 250—221 [250/551] | 2 Claims |
| 1. An optoelectronic dust sensor device, comprising:
at least one transmitter unit situated inside an injection molded sensor body;
at least one receiver unit operably associated with said transmitter unit and situated inside said sensor body; and
non-parallel test surfaces disposed between said transmitter unit and said receiver unit, and said test surfaces being constituted
by an exit surface of said transmitter unit and an entrance surface of said receiver unit, wherein radiation transmitted from
said transmitter unit to said receiver unit travels substantially in a beam path outside said sensor body; and
wherein an end face of said sensor body includes an isolated protrusion, at least one isolated protrusion of said end face
is situated between said transmitter unit and said receiver unit so that radiation emitted by said transmitter unit and oriented
toward said receiver unit passes through said protrusion.
|