Sensor arrangement

• US 20050184226A1
• Filed: 01/31/2005
• Published: 08/25/2005
• Est. Priority Date: 02/20/2004
• Status: Abandoned Application

• Current Assignee: Hella KGaA Hueck & Company
• Original Assignee: Hella KGaA Hueck & Company
• Inventors: Niemann, Thomas, Heilenkotter, Carsten
• Application Number:
  US11/047,157
• Publication Number:
  US 20050184226A1
• Time in Patent Office: Days
• US Class Current: 250/226
• CPC Class Codes: G01J 1/0204 Compact construction
• CPC Class Codes: G01J 1/04 Optical or mechanical part supplementary adjustable parts
• CPC Class Codes: G01J 1/0414 using plane or convex mirrors, parallel phase plates, or plane beam-splitters
• CPC Class Codes: G01J 1/0488 with spectral filtering
• CPC Class Codes: G01J 1/4204 with determination of ambient light solar light G01J2001/4266

Abstract

A sensor arrangement for determining brightness, comprising a photosensor and a reflector. The photosensor and the reflector are positioned such that light reflected by the reflector reaches the photosensor; and the reflector is designed such that a visible fraction of the ambient light is reflected, and an infrared fraction of the ambient light is transmitted. In this way, a sensor arrangement is created which is modeled on the perception of the human eye and which is comparatively easy and economical to produce.

Claims

1. A sensor arrangement for determining brightness comprising:

a photosensor and a reflector, wherein the photosensor and the reflector are positioned such that light reflected by the reflector reaches the photosensor; and

wherein the reflector is designed such that a visible fraction of ambient light is reflected, and another fraction of the ambient light is transmitted.

2. The sensor arrangement according to claim 1, wherein the photosensor is a silicon photosensor.

3. The sensor arrangement according to claim 1, wherein the reflector is made from a plastic material.

4. The sensor arrangement according to claim 1, wherein the sensor arrangement comprises a component carrier with an aperture.

5. The sensor arrangement according to claim 4, wherein the reflector is arranged opposite the aperture provided in the component carrier.

6. The sensor arrangement according to claim 4, wherein the photosensor is arranged adjacent to the aperture provided in the component carrier.

7. The sensor arrangement according to claim 4, wherein the reflector comprises a surface of the component carrier.

8. The component carrier according to claim 1, wherein a surface of the reflector is convex.

9. The sensor arrangement according to claim 4, wherein the component carrier is a closed housing.

10. The sensor arrangement according to claim 4, wherein a cover is provided above the component carrier.

11. The sensor arrangement according to claim 10, wherein the cover comprises an optical element.

12. The sensor arrangement according to claim 1, wherein the fraction of ambient light that is transmitted is infrared light.