Plenoptic imaging device
A plenoptic imaging device according to the invention comprises an image multiplier ( 130 ) for obtaining a multitude of optical images of an object or scene and a pick-up system ( 140 ) for imaging at least some of the multitude of images to a common image sensor ( 170 ) during the same exposure of the sensor.
1. An imaging device, insertable between a lens and a body of a camera, the camera comprising an image sensor, the imaging device comprising:
an image multiplier using reflection for obtaining a multitude of optical images of an object or scene;
a pick-up system for imaging at least some of the multitude of optical images to the image sensor during the same exposure of the image sensor, wherein the pickup system has a stoppable aperture,
characterized in that
when the imaging device is inserted, the pick-up system is arranged between the image multiplier and the image sensor of the camera; and
said stoppable aperture of said pickup system regulates a depth of field of individual optical images of said multitude of optical images.
2. The imaging device of claim 1 , further comprising:
an array of optical filters for filtering the multitude of optical images imaged by the pick-up system.
3. The imaging device of claim 2 , further comprising
an imaging system for imaging the filtered images onto the imaging sensor.
4. The imaging device of claim 1 , further comprising a pupil-matching lens to adjust for external optical device properties.
5. The imaging device of claim 2 , wherein the filters comprise neutral density, multispectral, polarization or temporal filters.
6. The imaging device of claim 1 , further comprising a diffuser screen.
7. A photo and/or video camera, comprising an imaging device according to claim 1 .
8. A camera add-on, comprising an imaging device according to claim 1 .
9. A system, comprising an imaging device according to claim 1 and an objective lens.
10. A computer-implemented method, comprising the steps of:
receiving at least some images or image sequences acquired using an imaging device according to claim 1 ;
reconstructing a digital image or video, based on the at least some images or image sequences; and
outputting the digital image or video.
11. An imaging device, insertable between a lens and a body of a camera, the camera comprising an image sensor, the imaging device comprising:
a prism coated with a reflective material for obtaining a multitude of optical images of an object or scene;
a pick-up system for imaging at least some of the multitude of optical images to the image sensor during the same exposure of the image sensor, wherein the pickup system has a stoppable aperture,
characterized in that
when the imaging device is inserted, the pick-up system is arranged between the image multiplier and the image sensor of the camera; and characterized in that
said stoppable aperture of said pickup system regulates a depth of field of individual optical images of said multitude of optical images.
12. The imaging device of claim 11 , further comprising:
an array of optical filters for filtering the multitude of optical images imaged by the pick-up system.
13. The imaging device of claim 12 , further comprising an imaging system for imaging the filtered images onto the image sensor.
14. The imaging device of claim 12 , wherein the filters comprise neutral density, multispectral, polarization or temporal filters.
15. The imaging device of claim 11 , further comprising a pupil-matching system to adjust for external optical device properties.
16. The imaging device of claim 11 , further comprising a diffuser screen.
17. A photo and/or video camera, comprising an imaging device according to claim 11 .
18. A camera add-on, comprising an imaging device according to claim 11 .
19. A system, comprising an imaging device according to claim 11 and an objective lens.