DETECTOR SYSTEM

Abstract

In a base element of a waveguide for a detector system at least a portion of radiation passing via the front side and incident on the diffractive element in a selection region is deflected via the diffractive element such that the deflected portion is propagated as coupled-in radiation in the base element by reflection to the out-coupling region and is incident on the associated out-coupling section of the out-coupling region. The out-coupling region couples at least a portion of the radiation out of the base element such that it is incident on the associated sensor section of the sensor unit, which continuously measures the intensity of the incident radiation and supplies the control unit. The control unit determines the distance of the object from the front side of the base element according to the measured intensity.

Description

Claims

1-13. (canceled)

14. A detector system, comprising: a waveguide, comprising a transparent base body having a front and a rear;a display device that shows a selection region in such a way that it can be seen in a display region of the base body when the front is viewed;a sensor device comprising an assigned sensor section for the selection region; anda control device,wherein the base body includes a diffractive element in the display region and a decoupling region that is spaced apart from the display region and comprises an assigned decoupling section for the selection region,wherein at least a portion of radiation that is incident on the diffractive element in the selection region via the front is deflected via the diffractive element such that the deflected portion propagates as coupled-in radiation in the base body by reflection as far as the decoupling region and is incident on the assigned decoupling section of the decoupling region,wherein the decoupling region decouples at least a portion of the coupled-in radiation that is incident on the decoupling region from the base body such that said portion is incident on the assigned sensor section of the sensor device, which section continuously measures the intensity of the incident radiation and supplies it to the control device, andwherein the control device is configured to take the measured intensity as a basis for determining the distance of the object from the front of the base body.

15. The detector system of claim 14, wherein the diffractive element and/or the decoupling section comprises a wavelength-dependent imaging property having a longitudinal chromatic aberration, wherein the sensor device measures an intensity of the incident radiation as a function of wavelength and supplies the measured intensity to the control device, and wherein the control device takes the measured wavelength-dependent intensity as a basis for determining the distance of the object from the front of the base body.

16. The detector system of claim 15, wherein the diffractive element is a volume hologram.

17. The detector system of claim 14, wherein the diffractive element is a volume hologram.

18. The detector system of claim 14, wherein the diffractive element comprises a lens element function.

19. The detector system of claim 18, wherein the lens element function of the diffractive element is configured such that the coupled-in radiation propagates in the base body as a parallel pencil of rays.

20. The detector system of claim 14, wherein the decoupling section comprises a volume hologram.

21. The detector system of claim 14, wherein the decoupling section comprises a lens element function.

22. The detector system of claim 14, furterh comprising an illumination device that actively illuminates the object to be positioned in front of the front.

23. The detector system of claim 22, wherein the illumination device is configured to illuminate the object from the base body.

24. The detector system of claim 14: wherein the display device shows multiple selection regions such that the multiple selection regions can be seen in the display region of the base body when the front is viewed,wherein the sensor device comprises an assigned sensor section for each selection region,wherein at least a portion of radiation that is incident on the diffractive element in the display region via the front is deflected via the diffractive element on the basis of the selection region such that the deflected portion propagates as coupled-in radiation in the base body by reflection as far as the decoupling region and is incident on the assigned decoupling section of the decoupling region,wherein the decoupling region decouples at least a portion of the coupled-in radiation that is incident on it from the base body such that the portion decoupled by a decoupling section is incident on the assigned sensor section of the sensor device, which section continuously measures the intensity of the incident radiation and supplies it to the control device, andwherein the control device is configured to take a change in intensity caused by an object being positioned in front of the front of the base body and in front of a selection region of the display region as a basis for determining whether the selection region has been selected.

25. The detector system of claim 24, wherein the deflection via the diffractive element on the basis of the selection region differs by different propagation angles within the transparent base body and/or different deflected wavelengths.

26. The detector system of claim 14, wherein the diffractive element for each selection region comprises a coupling section that has a smaller two-dimensional extent than the assigned selection region.

27. The detector system of claim 14, wherein the control device is configured to take the determined distance as a basis for changing the value of a measurement parameter and/or output parameter.