OPTOELECTRONIC SENSOR DEVICE, IN PARTICULAR LASER SCANNER, HAVING AN ADAPTED RECEIVING UNIT FOR OPTIMIZED REDUCTION OF THE RECEPTION LEVEL

• US 20150177368A1
• Filed: 03/22/2013
• Published: 06/25/2015
• Est. Priority Date: 04/04/2012
• Status: Active Grant

• Current Assignee: Valeo Schalter und Sensoren GmbH (Valeo SE)
• Original Assignee: Valeo Schalter und Sensoren GmbH (Valeo SE)
• Inventors: Bayha, Heiner, Horvath, Peter, Nicolai, Jens
• Granted Patent: US 9,606,222 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G01S 17/04 Systems determining the presence of a target
• CPC Class Codes: G01S 17/08 for measuring distance only indirect measurement G01S17/46; active triangulation systems G01S17/48
• CPC Class Codes: G01S 7/4816 of receivers alone
• CPC Class Codes: G01S 7/4868 Controlling received signal intensity or exposure of sensor

Abstract

The invention relates to an optoelectronic sensor device (1) for a motor vehicle, for detecting objects located in the surroundings of the motor vehicle, having a transmitting unit (2) for emitting an optical transmission signal (5), having a receiving unit (7) for receiving a reception signal (8) which is the transmission signal (5) reflected by an object, wherein the receiving unit (7) has at least two receiving elements (9, 10, 11) which are arranged distributed along a distribution direction (12), and reception optics (13), in particular a receiving lens which is positioned ahead of the receiving elements (9, 10, 11) in the propagation direction (14) of the reception signal (8), having a securing device (22) for securing the receiving optics (13), and having a diaphragm (21, 21′) for reducing the intensity of the reception signal (8), wherein the diaphragm (21, 21′) is secured to the securing device (22).

Claims

1. Optoelectronic sensor device (1) for a motor vehicle, for detecting objects located in the surroundings of the motor vehicle, having a transmitting unit (2) for emitting an optical transmission signal (5), having a receiving unit (7) for receiving a reception signal (8) which is the transmission signal (5) reflected by an object, wherein the receiving unit (7) has at least two receiving elements (9, 10, 11) which are arranged distributed along a distribution direction (12), and receiving optics (13), in particular a receiving lens which is positioned ahead of the receiving elements (9, 10, 11) in the propagation direction (14) of the reception signal (8), having a securing device (22) for securing the receiving optics (13), and having a diaphragm (21, 21′

) for reducing the intensity of the reception signal (8),

characterized in that

the diaphragm (21, 21′

) is secured to the securing device (22).

2. Sensor device (1) according to claim 1,

characterized in that

the diaphragm (21, 21′

) is an inherently rigid element.

3. Sensor device (1) according to claim 1 or 2,

characterized in that

the diaphragm (21, 21′

) is embodied in one piece with the securing device (22).

4. Sensor device (1) according to one of the preceding claims,

characterized in that

the diaphragm (21, 21′

) has a securing function for the receiving optics (13), with

the result that the receiving optics (13) are secured at least in a supporting fashion by the diaphragm (21, 21′

).

5. Sensor device (1) according to one of the preceding claims,

characterized in that

the diaphragm (21, 21′

) is of elongate design and extends along the distribution direction (12) of the receiving elements (9, 10, 11).

6. Sensor device (1) according to one of the preceding claims,

characterized in that

the diaphragm (21, 21′

) tapers in the distribution direction (12) of the receiving elements (9, 10, 11), in particular tapers in the direction of a receiving element (9, 10, 11) which is positioned closest with respect to the transmitting unit (2).

7. Sensor device (1) according to one of the preceding claims,

characterized in that

the diaphragm (21, 21′

) is embodied in the manner of a trapezium with straight or curved limbs (28, 29;

28′

, 29′

).

8. Sensor device (1) according to one of the preceding claims,

characterized in that

the diaphragm (21, 21′

) is arranged centrally in relation to the receiving optics (13) in the perpendicular direction with respect to the distribution direction (12) of the receiving elements (9, 10, 11) and perpendicularly with respect to the propagation direction (14) of the reception signal (8).

9. Sensor device (1) according to one of the preceding claims,

characterized in that

the diaphragm (21, 21′

) is formed from a material which is non-transparent, or has a defined partial transparency, with respect to the optical reception signal (8).

10. Sensor device (1) according to one of the preceding claims,

characterized in that

the securing device (22) has a frame (23) for holding the receiving optics (13), and the diaphragm (21, 21′

) spans two opposite sides (24, 26) of the frame (23).

11. Sensor device (1) according to claim 10,

characterized in that

the diaphragm (21, 21′

) is located in a common plane with the sides (24 to 27) of the frame (23).

12. Sensor device (1) according to claim 10,

characterized in that

the diaphragm (21, 21′

) is embodied as a spring element which presses the receiving optics (13) against the frame (23).

13. Motor vehicle having an optoelectronic sensor device (1) according to one of the preceding claims.