Biometric imaging system and method for controlling the system

1. A biometric imaging system comprising:

a display panel comprising: a plurality of display pixels controllable to form an image in the display and a plurality of individually controllable non-visible light emitting elements configured to emit non-visible light, the non-visible light emitting elements being further configured to form a controllable spatial irradiation pattern within an irradiation zone defined by the plurality of non-visible light emitting elements, wherein at least a subset of the plurality of display pixels each comprise a non-visible light emitting element; and

a control unit configured to:

identify a biometric object facing the display panel;

determine a relative location of the biometric object in the irradiation zone in relation to the display panel;

control the plurality of non-visible light emitting elements to form a spatial radiation pattern based on the location of the biometric object in relation to the display panel, and

control the non-visible light emitting elements to form a spatial radiation pattern having a maximum intensity at the location of the biometric object.

2. The biometric imaging system according to claim 1 , further comprising a camera sensitive to non-visible light, wherein the control unit is further configured to control the camera to acquire an image of the biometric object.

3. The biometric imaging system according to claim 2 , wherein the camera configured to sense non-visible light is further configured to acquire an image comprising the biometric object and to identify the biometric object in the image.

4. The biometric imaging system according to claim 1 , wherein at least a subset of the plurality of display pixels comprises a red, green and blue light emitting element, and a non-visible light emitting element.

5. The biometric imaging system according to claim 1 , wherein a first subset of the plurality of display pixels consists of a non-visible light emitting element, and wherein a second subset of the plurality of display pixels consists of a red, green and blue light emitting element.

6. The biometric imaging system according to claim 1 , further comprising a camera configured to acquire an image comprising the biometric object and to identify the biometric object in the image.

7. The biometric imaging system according to claim 1 , wherein the plurality of non-visible light emitting elements comprises light emitting elements having different radiation distributions.

8. The biometric imaging system according to claim 1 , wherein the plurality of non-visible light emitting elements comprises light emitting elements having a controllable radiation distribution.

9. The biometric imaging system according to claim 1 , wherein the non-visible light emitting elements are infrared, IR, light emitting elements or ultraviolet, UV, light emitting elements.

10. A method for controlling a biometric imaging system comprising a display panel to irradiate a biometric object, the display panel comprising: a plurality of display pixels controllable to form an image in the display and a plurality of individually controllable non-visible light emitting elements configured to emit non-visible light, wherein at least a subset of the plurality of display pixels each comprise a non-visible light emitting element, the non-visible light emitting elements being configured to form a controllable spatial radiation pattern within an irradiation zone defined by the plurality of non-visible light emitting elements;

the method comprising:

identifying a biometric object facing the display panel;

determining a relative location of the biometric object in the irradiation zone in relation to the display panel; and

controlling the plurality of non-visible light emitting elements to form a spatial radiation pattern based on the location of the biometric object in relation to the display panel,

wherein controlling the non-visible light emitting elements to form a spatial radiation pattern comprises activating only a portion of the plurality of non-visible light emitting elements, and

wherein the portion of activated non-visible light emitting elements are located in a portion of the display located nearest to the location of the biometric object.

11. The method according to claim 10 , further comprising, in a system comprising a camera configured to sense non-visible light, acquiring an image of the biometric object by the camera.

12. The method according to claim 10 , wherein identifying the biometric object comprises:

irradiating the irradiation zone by the non-visible light sensing elements;

capturing an image comprising the biometric object by the camera configured to sense non-visible light; and

identifying the biometric object in the captured image.

13. The method according to claim 12 , wherein irradiating the irradiation zone comprises forming an irradiation pattern by means of the non-visible light emitting elements corresponding to the irradiation zone.

14. The method according to claim 10 , further comprising controlling the non-visible light emitting elements to form a spatial radiation pattern having a maximum irradiance at the location of the biometric object.

15. The method according to claim 10 , further comprising controlling the non-visible light emitting elements to form a spatial radiation pattern having an even irradiance across the biometric object.

16. The method according to claim 10 , further comprising controlling an angular light distribution of an individual non-visible light emitting element.

17. A biometric imaging system comprising:

a display panel comprising: a plurality of display pixels controllable to form an image in the display and a plurality of individually controllable non-visible light emitting elements configured to emit non-visible light, the non-visible light emitting elements being further configured to form a controllable spatial irradiation pattern within an irradiation zone defined by the plurality of non-visible light emitting elements, wherein at least a subset of the plurality of display pixels each comprise a non-visible light emitting element; and

a control unit configured to:

identify a biometric object facing the display panel;

determine a relative location of the biometric object in the irradiation zone in relation to the display panel; and

control the plurality of non-visible light emitting elements to form a spatial radiation pattern based on the location of the biometric object in relation to the display panel,

wherein a density of non-visible light emitting elements is higher in a first area portion of the display than in a second area portion of the display.

18. The biometric imaging system according to claim 17 , further comprising a camera sensitive to non-visible light, wherein the control unit is further configured to control the camera to acquire an image of the biometric object.

19. The biometric imaging system according to claim 17 , wherein at least a subset of the plurality of display pixels comprises a red, green and blue light emitting element, and a non-visible light emitting element.

20. The biometric imaging system according to claim 17 , wherein a first subset of the plurality of display pixels consists of a non-visible light emitting element, and wherein a second subset of the plurality of display pixels consists of a red, green and blue light emitting element.