Multiple Aperture Optical System

• US 20080225420A1
• Filed: 03/13/2007
• Published: 09/18/2008
• Est. Priority Date: 03/13/2007
• Status: Abandoned Application

• Current Assignee: Craig W. Neely, Geoffrey L. Barrows
• Original Assignee: Craig W. Neely, Geoffrey L. Barrows
• Inventors: Barrows, Geoffrey L., Neely, Craig W.
• Application Number:
  US11/685,203
• Publication Number:
  US 20080225420A1
• Time in Patent Office: Days
• US Class Current: 359/850
• CPC Class Codes: G01S 11/12 using electromagnetic waves other than radio waves
• CPC Class Codes: G06T 2200/28 involving image processing hardware
• CPC Class Codes: G06T 2207/10016 Video; Image sequence
• CPC Class Codes: G06T 2207/30212 Military
• CPC Class Codes: G06T 7/246 using feature-based methods, e.g. the tracking of corners or segments

Abstract

A multiple aperture optical system is provided that overcomes many limitations of wide field of view imaging systems. A basic component of the multiple aperture optical system is an “eye strip”, which comprises an array of imaging apertures physically mounted onto a flexible circuit strip and a master processor. Each imaging aperture generates an aperture output based on the imaging aperture'"'"'s field of view. The master processor takes as input the aperture outputs generated by the apertures on the eye strips, and generates an output in response. In one embodiment, the multiple aperture optical system enables obtaining an omnidirectional image in a structure that is thin and can be physically conformed to an underlying structure.

Claims

1. A multiple aperture optical system comprising:

at least one eye strip, wherein each said eye strip comprises a plurality of apertures and each said aperture is configured to generate an aperture output from the visual field of said aperture; and

a master processor configured to receive said aperture outputs from said at least one eye strip and produce a master processor output from said aperture outputs.

2. The multiple aperture optical system of claim 1, wherein:

said apertures are configured to have diverging fields of view; and

each said eye strip is flexible.

3. The multiple aperture optical system of claim 2, wherein at least one of said apertures comprises:

a vision chip; and

an optical assembly configured to form an image from the vision chip visual field of said vision chip, wherein said vision chip is configured to generate a vision chip output from said vision chip visual field.

4. The multiple aperture optical system of claim 3, wherein at least one of said vision chips is further configured to generate a plurality of feature signals from said vision chip visual field.

5. The multiple aperture optical system of claim 4, wherein said multiple aperture optical system is mounted on a mobile robotic system.

6. The multiple aperture optical system of claim 2, wherein at least one of said apertures comprises an optical flow sensor configured for generating at least one optical flow measurement.

7. The multiple aperture optical system of claim 6, wherein at least one of said optical flow sensors comprises:

a vision chip configured for generating a plurality of feature signals from the vision chip visual field of said vision chip; and

an aperture processor configured for generating at least one optical flow measurement from said plurality of feature signals.

8. The multiple aperture optical system of claim 7, wherein said multiple aperture optical system is mounted on a mobile robotic system.

9. The multiple aperture optical system of claim 2, wherein said master processor is configured to generate a stitched image from said aperture outputs.

10. The multiple aperture optical system of claim 6, wherein said multiple aperture optical system is further configured to be mounted on a mobile robotic system.

11. The multiple aperture optical system of claim 9, wherein at least one of said apertures comprises an optical flow sensor configured for generating at least one optical flow measurement from the visual field of said optical flow sensor.

12. The multiple aperture optical system of claim 11, wherein said optical flow sensor comprises:

a vision chip configured for generating a plurality of feature signals from the vision chip visual field of said vision chip; and

an aperture processor configured for generating at least one optical flow measurement from said plurality of feature signals.

13. The multiple aperture optical system of claim 1, wherein:

said eye strips comprise a flexible circuit strip; and

at least one of said apertures comprises a single piece optical assembly and an imager, and said imager is configured to generate a plurality of pixel values based on the visual field of said imager.

14. The multiple aperture optical system of claim 13, wherein at least one of said imagers is mounted between one said single piece optical assembly and said flexible circuit strip.

15. The multiple aperture optical system of claim 14, wherein at least one of said single piece optical assemblies comprises a lens bump.

16. The multiple aperture optical system of claim 14, wherein said apertures are configured to have diverging fields of view.

17. The multiple aperture optical system of claim 13, wherein:

at least one of said imagers is mounted on one side of a said flexible circuit strip;

one said single piece optical assembly is mounted on the other side of said flexible strip; and

said flexible strip is configured to be optically transparent in between said imager and said single piece optical assembly.

18. The multiple aperture optical system of claim 17, wherein said imager is electrically connected to said flexible circuit strip using bumped pads.

19. The multiple aperture optical system of claim 18, wherein at least one of said single piece optical assemblies comprises a lens bump.

20. The multiple aperture optical system of claim 17, wherein at least one of said single piece optical assemblies comprises a lens bump.

21. The multiple aperture optical system of claim 17, wherein said apertures are configured to have diverging fields of view.