Measuring arrangement having an optical transmitter and an optical receiver

• US 10,809,358 B2
• Filed: 01/30/2018
• Issued: 10/20/2020
• Est. Priority Date: 02/01/2017
• Status: Active Grant

• Current Assignee: OSRAM OLED GMBH (Ams-Osram AG)
• Original Assignee: OSRAM OLED GMBH (Ams-Osram AG)
• Inventors: Becker, Dirk, Haushalter, Martin, Jaeger, Claus
• Primary Examiner(s): Bello, Agustin
• Application Number:
  US16/483,037
• Publication Number:
  US 20200116829A1
• Time in Patent Office: 994 Days
• Field of Search: 398135-139
• CPC Class Codes: G01S 17/04 Systems determining the presence of a target
• CPC Class Codes: G01S 7/4813 Housing arrangements
• CPC Class Codes: G01S 7/4814 of transmitters alone
• CPC Class Codes: G01S 7/4816 of receivers alone
• CPC Class Codes: G01V 8/14 using reflectors

Abstract

A measuring arrangement having an optical transmitter and an optical receiver are disclosed. In an embodiment a measuring arrangement includes an optical transmitter configured to transmit electromagnetic measuring radiation into a transmission space, an optical receiver configured to receive measuring radiation reflected by an object in a reception space and a covering configured to reduce reception of an interference radiation by the receiver, wherein the interference radiation is measuring radiation not reflected by the object.

Claims

1. A measuring arrangement comprising:

an optical transmitter configured to transmit electromagnetic measuring radiation into a transmission space;

an optical receiver configured to receive measuring radiation reflected by an object in a reception space; and

a covering configured to reduce reception of an interference radiation by the receiver,

wherein the interference radiation is measuring radiation not reflected by the object,

wherein the transmitter is arranged in the reception space,

wherein the reception space abuts on the receiver at a reception surface,

wherein the transmitter covers a partial surface of the reception surface against reception of reflected measuring radiation,

wherein the reception surface comprises an inactive surface area,

wherein the inactive surface area at least partly comprises a ring shape around a shadowed partial surface, and

wherein the receiver does not evaluate measuring radiation striking in the inactive surface area.

2. The arrangement according to claim 1, wherein the covering is at least partly arranged in the transmission and reception spaces, wherein the covering comprises a passage area, wherein the passage area is transparent for the measuring radiation and transparent for reflected measuring radiation, wherein the passage area at least partially limits the transmission and reception spaces, and wherein the passage area is embodied as a continuous surface.

3. The arrangement according to claim 1, wherein no reception surface is provided in the inactive surface area or the reception surface is covered or the reception surface is deactivated.

4. The arrangement according to claim 3, wherein a lens is held in a retainer at a distance to the transmitter, wherein the retainer is arranged on the reception surface or the receiver, and wherein the retainer surrounds or covers the transmitter.

5. The arrangement according to claim 1, further comprising a lens located in the transmission space, wherein the lens is configured to focus the radiation on a target region.

6. The arrangement according to claim 5, wherein the lens is formed from a molding material, and wherein the lens covers the transmitter and at least partially the receiver.

11. The arrangement according to claim 1, wherein the receiver comprises a reception surface configured to receive the reflected measuring radiation, wherein the entire reception surface is located in the reception space, and wherein the reflected measuring radiation strikes the receiver via a passage area.

12. The arrangement according to claim 1, wherein the receiver comprises a reception surface configured to receive the reflected measuring radiation, and wherein the reception surface has at least a partial circle shape corresponding to the reception space.

13. The arrangement according to claim 1, wherein the transmitter and/or the receiver comprises an optical element configured to guide the radiation.

14. The arrangement according to claim 1, wherein the transmitter is arranged on the receiver.

15. The arrangement according to claim 1, wherein the receiver comprises a reception surface arranged on an evaluation chip, and wherein the reception surface has a smaller area than the evaluation chip.

7. An arrangement comprising:

an optical transmitter configured to transmit electromagnetic measuring radiation into a transmission space;

an optical receiver configured to receive measuring radiation reflected by an object in a reception space; and

a covering configured to reduce reception of an interference radiation by the receiver,

wherein the interference radiation is measuring radiation not reflected by the object,

wherein the receiver comprises a reception surface configured to receive the reflected measuring radiation,

wherein the reception surface is divided up into at least two partial surfaces, wherein at least a partial surface of the partial surfaces is configured to be activated or deactivated,

wherein the receiver is configured to detect the reflected measuring radiation via the partial surface in an active state,

wherein the receiver is configured to not detect the reflected measuring radiation via the deactivated partial surface in an inactive state,

wherein the partial surfaces have a ring-shaped configuration,

wherein the transmitter is arranged in the reception space,

wherein the transmitter covers a part of the reception space against reception of reflected measuring radiation, and

wherein the reception space abuts on the receiver in the reception surface.

8. The arrangement according to claim 7, further comprising a covering at least partly arranged in the transmission and reception spaces, the covering comprising a passage area, the passage area configured to be transparent for the measuring radiation and for reflected measuring radiation, wherein the passage area at least partly comprises the transmission space and at least partly the reception space, and wherein the passage area comprises a continuous surface.

9. The arrangement of claim 7, wherein the partial surfaces have a ring-shaped configuration, or wherein the partial surfaces are striped rings with angled corner areas.

10. The arrangement of claim 7, wherein the reception surface is configured as a segmented photodiode, wherein the partial surfaces represent segments of the photodiode, and wherein the segments are evaluated independently.