Infrared laser illumination device

1. An illumination device comprising:

at least a first group of laser devices, the first group of laser devices comprising at least one laser device, wherein the first group of laser devices is arranged to emit laser light with a first emission characteristic;

at least a second group of laser devices, the second group of laser devices comprising at least one laser device, wherein the second group of laser devices is arranged to emit laser light with a second emission characteristic; and

a first optical device, wherein the first optical device is arranged to modify the first emission characteristic such that the laser devices of the first group of laser devices emit laser light with a first divergence angle, and the laser devices of the second group of laser devices are arranged to emit laser light with a second divergence angle,

wherein the first group and the second group of laser devices are arranged to operate independently with respect to each other,

wherein the second emission characteristic is different from the first emission characteristic,

wherein the second divergence angle is different from the first divergence angle,

wherein the first emission characteristic and the second emission characteristic are arranged to illuminate different parts of a three dimensional arrangement differently.

2. The illumination device according to claim 1 , further comprising a driving circuit and a sensor,

wherein the driving circuit is arranged to drive the first group of laser devices with a first driving current and the second group of laser devices with a second driving current,

wherein the second driving current is different from the first driving current,

wherein the laser light reflected by the three-dimensional arrangement is determined by the sensor,

wherein the driving circuit is arranged to control the first emission characteristic and the second emission characteristic using feedback signals generated by the sensor,

wherein the three dimensional arrangement has a first surface and a second surface,

wherein the first surface is parallel to the first group of laser devices and the second group of laser devices,

wherein the second surface is arranged with an tilt angle relative to the first group of laser devices and the second group of laser devices,

wherein the first emission characteristic and the second emission characteristic are arranged by means of the first and second divergence angle such that the first surface receives less laser light emitted by the first and/or the second group of laser devices as the second surface.

3. The illumination device according to claim 1 , further comprising a second optical device wherein the second optical device is arranged to modify the second emission characteristic such that the laser devices of the second group of laser devices emit laser light with the second divergence angle.

4. The illumination device according to claim 1 , wherein the first group of laser devices and the second group of laser devices are arranged on a common chip arrangement.

5. The illumination device according to claim 4 , wherein the laser devices are Vertical Cavity Surface Emitting Lasers.

6. The illumination device according to claim 5 ,

wherein the first group of laser devices comprises a first laser device array chip arranged on a mounting structure,

wherein the second group of laser devices comprises a second laser device array chip arranged on the mounting structure.

7. The illumination device according to claim 5 ,

wherein the first group of laser devices and the second group of laser devices are arranged on a common chip,

wherein the first group of laser devices and the second group of laser devices share one common contact layer,

wherein the first group of laser devices is electrically connected to a first electrical contact and the second group of laser devices is electrically connected to a second electrical contact.

8. The illumination device according to claim 6 ,

wherein the laser devices of the first group of laser devices are arranged in a first geometric arrangement and the laser devices of the second group of laser devices are arranged in a second geometric arrangement,

wherein the second geometric arrangement is different from the first geometric arrangement.

9. The illumination device according to claim 6 ,

wherein the laser devices of the first group of laser devices have a first aperture characteristic and the laser devices of the second group of laser devices have a second aperture characteristic,

wherein the second aperture characteristic is different from the first aperture characteristic.

10. A distance detection device comprising:

at least one illumination device according to claim 1 ;

at least one photo-detector; and

an evaluator;

wherein the photo-detector is arranged to receive reflected laser light emitted by the first and/or the second group of laser devices,

wherein, the evaluator is arranged to identify the reflected laser light,

wherein the evaluator is arranged to determine a time of flight,

wherein the time of flight is a difference between a time of reception of the reflected laser light and a time of emission of the laser light.

11. A camera system comprising:

the illumination device according to claim 1 ;

a camera device; and

an optical sensor,

wherein the optical sensor is arranged to provide optical sensor data to the the driving circuit,

wherein the driving circuit is arranged to control the illumination device such that the first group of laser devices emits laser light with the first emission characteristic and the second group of laser devices emits laser light with the second emission characteristic.

12. A method of illuminating a three dimensional arrangement comprising the steps of:

illuminating at least a first part of a three dimensional arrangement using at least a first group of laser devices, the first group of laser devices comprising at least one laser device,

wherein laser light emitted by the first group of laser devices is characterized by a first emission characteristic;

modifying the first emission characteristic using a first optical device such that the laser devices of the first group of laser devices emit laser light with a first divergence angle;

illuminating at least a second part of the three dimensional arrangement with at least a second group of laser devices, the second group of laser devices comprising at least one laser device,

wherein laser light emitted by the second group of laser devices is characterized by a second emission characteristic,

wherein the second emission characteristic is different from the first emission characteristic,

wherein the second emission characteristic is characterized by a second divergence angle,

wherein the second divergence angle is different from the first divergence angle,

arranging the first emission characteristic and the second emission characteristic using the first divergence angle and second divergence angle such that different parts of the three dimensional arrangement are illuminated differently.

13. The illumination device according to claim 1 , wherein the laser device emits light in the infrared wavelength spectrum.

14. The illumination device according to claim 1 , wherein the first diversion angle and second divergence angle are arranged to illuminate different parts of the three dimensional arrangement differently.

15. The illumination device according to claim 2 , wherein the first emission characteristic and the second emission characteristic are arranged to use the first divergence angle and second divergence angle, such that the first surface receives less laser light emitted by the first and/or the second group of laser devices as the second surface.