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1. (WO2017151660) 3D IMAGING SYSTEM AND METHOD
Nota: Texto obtenido mediante procedimiento automático de reconocimiento óptico de caracteres.
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WHAT IS CLAIMED:

1. A 3D imaging system, comprising:

an optical modulator configured to modulate a returned portion of a light pulse as a function of time;

an array of optical elements receiving the modulated returned portion of the light pulse, wherein at least one of the optical elements has a predetermined first optical transmission state different from a second predetermined optical transmission state of another of the optical elements; and

a sensor array of pixels corresponding to the array of optical elements, located to receive light output from the array of optical elements.

2. The system of claim 1, wherein the array of optical elements includes a plurality of polarizing elements.

3. The system of claim 2, wherein the polarizing elements include polarizing elements with substantially orthogonal polarization states relative to each other.

4. The system of claim 1, wherein the optical modulator is configured to modulate the polarization state of the returned portion of the light pulse.

5. The system of claim 1, wherein the array of optical elements includes a first group of elements having a first reflective coating that has a first transmission level and a second group of elements a second reflective coating that has a second transmission level different from the first transmission level.

6. The system of claim 1, wherein the optical modulator includes a variable Fabry-Perot etalon.

7. The system of claim 1, wherein the array of optical elements is integrally formed on the sensor array of pixels.

8. The system of claim 1, wherein the array of optical elements includes one or more separator bands configured to reduce cross-talk between pixels of the sensor array.

9. The system of claim 1, further comprising one or more separator walls formed between the pixels in the sensor array to reduce cross-talk between the pixels.

10. The system of claim 1, further comprising a light source for emitting the light pulse.

11. The system of claim 1, further comprising a receiving lens located before the modulator for receiving the returned portion of the light pulse.

12. A 3D imaging system, comprising:

an optical modulator for modulating a returned portion of a light pulse as a function of time;

an electro-optic module configured to receive a modulated returned portion of the light pulse from the optical modulator, the electro-optic module including:

a sensor array of pixels; and

an array of optical elements formed on the sensor array, for receiving the modulated returned portion of the light pulse, wherein at least one of the optical elements has a predetermined first optical transmission state different from a second predetermined optical transmission state of another of the optical elements; and

a processor configured to process signals from the sensor array of pixels, produced in response to the modulated return portion of the light pulse, to generate 3D information regarding a scene.

13. The system of claim 12, wherein the array of optical elements includes a plurality of polarizing elements with different polarization states relative to each other.

14. The system of claim 12, wherein the array of optical elements includes a first group of elements having a first reflective coating that has a first transmission level and a second group of elements a second reflective coating that has a second transmission level different from the first transmission level.

15. The system of claim 12, wherein the array of optical elements includes one or more separator bands configured to reduce cross-talk between pixels of the sensor array.

16. The system of claim 12, further comprising one or more separator walls formed between the pixels in the sensor array to reduce cross-talk between the pixels.

17. The system of claim 12, wherein the optical modulator is included in the electro-optic module, and the optical modulator, sensor array and array of optical elements are integrally formed into a single unit.

18. The system of claim 12, further comprising a receiving lens located before the modulator for receiving the returned portion of the light pulse.

19. The system of claim 12, wherein the optical modulator includes a Pockels cell.

20. A method, comprising:

illuminating a scene with a light pulse;

modulating a returned portion of the light pulse;

passing the modulated returned portion of the light pulse through an array of optical elements, wherein at least one of the optical elements has a predetermined first optical transmission state different from a second predetermined optical transmission state of another of the optical elements;

receiving at a sensor array of pixels light output from the array of optical elements; and

generating 3D information regarding a scene based on signals generated by the sensor array in response to the modulated return portion of the light pulse passed through the array of optical elements.