Imaging system, method, and applications

• US 10,341,559 B2
• Filed: 05/05/2015
• Issued: 07/02/2019
• Est. Priority Date: 05/06/2014
• Status: Active Grant

• Current Assignee: Circle Optics, Inc.
• Original Assignee: Zakariya Niazi
• Inventors: Niazi, Zakariya
• Primary Examiner(s): Aynalem, Nathnael
• Application Number:
  US15/309,180
• Publication Number:
  US 20170085792A1
• Time in Patent Office: 1,519 Days
• CPC Class Codes: G02B 13/06 Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
• CPC Class Codes: G02B 3/02 with non-spherical faces G02B3/10 takes precedence
• CPC Class Codes: G02B 9/34 having four components only
• CPC Class Codes: G03B 37/04 with cameras or projectors providing touching or overlapping fields of view
• CPC Class Codes: H04N 23/55 Optical parts specially adapted for electronic image sensors; Mounting thereof
• CPC Class Codes: H04N 23/698 for achieving an enlarged field of view, e.g. panoramic image capture
• CPC Class Codes: H04N 23/90 Arrangement of cameras or camera modules, e.g. multiple cameras in TV studios or sports stadiums

Abstract

A multicamera panoramic imaging system having no parallax. In an example, the multicamera panoramic imaging system includes multiple discrete, imaging systems disposed in a side-by-side array, wherein a field of view of each discrete, imaging systems is conjoined with a field of view of each adjacent discrete imaging system, further wherein a stencil of chief rays at the edge of the field of view of any one of the discrete imaging systems will be substantially parallel to a stencil of chief rays at the edge of the field of view of any adjacent ones of the discrete imaging systems such that all of the substantially parallel stencils of chief rays appear to converge to a common point when viewed from object space. A method for forming an image of an object having no parallax.

Claims

1. A method for forming a panoramic image, comprising:

providing a panoramic imaging system having a plurality of discrete imaging systems disposed in a side-by-side array, each of the discrete imaging systems characterized by a field of view; and

constraining a plurality of chief rays that strike along an edge of the field of view of every one of the discrete imaging systems to be substantially parallel to another plurality of chief rays that strike along an adjacent edge of the field of view of an immediately adjacent one of the discrete imaging systems such that all of the chief rays that strike along the edge of the field of view of the discrete imaging systems appear to converge to a common NP point when viewed from object space and the field of view of each of the plurality of discrete imaging systems conjoins with but does not overlap the field of view of the immediately adjacent one of the discrete imaging systems.

2. The method of claim 1, further comprising constraining at least 50% of the chief rays that strike along adjacent edges of the field of view of adjacent discrete imaging systems to to be substantially parallel.

3. The method of claim 1, wherein each of the discrete imaging systems shares a same set of chief rays that strike long the edge of the field of view with the immediately adjacent one of the discrete imaging systems.

4. The method of claim 1, wherein each of the plurality of discrete imaging systems are identical.

5. The method of claim 1, wherein the step of providing the panoramic imaging system comprises:

configuring the side-by-side array in a three-dimensional geometric shape having a center,

configuring each of the plurality of discrete imaging systems with a front lens having a plurality of edges, which define a plurality of edge surface angles at points along the edges with respect to the center of the three-dimensional geometric shape and a mid-point of the front lens, and

configuring each edge in the plurality of edges to be adjacent to an adjacent edge in an adjacent front lens, and

the step of constraining the plurality of chief rays that strike along the edge of the field of view comprises matching an angle of incidence of each of the plurality of chief rays along the edges with the edge surface angles along the adjacent edge.

6. The method of claim 5, wherein the three-dimensional shape is a dodecahedron, and the front lens in each of the discrete imaging systems is configured to have a pentagon shape wherein the edges of the pentagon shape have a length “

a”

, the diameter of a circle circumscribing the pentagon shape is equal to a/sin(36°

)=1.7013a, a radius of a sphere inscribed within the dodecahedron is equal to;

7. A multicamera panoramic imaging system, comprising:

a plurality of discrete, imaging systems characterized by a field of view and disposed in a side-by-side array, wherein the field of view of each of the discrete imaging systems is conjoined with but does not overlap the field of view of each adjacent discrete imaging system, each of the discrete imaging systems comprising a front lens configured to constrain a plurality of chief rays that strike along an edge of the field of view of every one of the discrete imaging systems to be substantially parallel to another plurality of chief rays that strike along an adjacent edge of the field of view of an immediately adjacent one of the discrete imaging systems such that all of the chief rays that strike along the edge of the field of view of each of the discrete imaging systems appear to converge to a common NP point when viewed from object space.

8. The multicamera panoramic imaging system of claim 7, wherein at least 50% of the chief rays that strike along adjacent edges of the field of view of adjacent discrete imaging systems are substantially parallel.

9. The multicamera panoramic imaging system of claim 7, wherein each of the discrete imaging systems includes an image sensor, further wherein the common NP point lies behind the image sensor.

10. The multicamera panoramic imaging system of claim 7, wherein the side-by-side array forms a three-dimensional geometric shape having a center, the front lens in each of the discrete imaging systems has a plurality of edges which define a plurality of edge surface angles at points along the edges with respect to the center of the three-dimensional geometric shape and a mid-point of the front lens, each edge in the plurality of edges being configured adjacent to an adjacent edge in an adjacent front lens, and the plurality of edge surface angles along the edges in each of the plurality of edges matching an angle of incidence of each of the plurality of chief rays along the adjacent edge in the adjacent front lens.

11. The multicamera panoramic imaging system of claim 10, wherein the three-dimensional shape is a dodecahedron, and the front lens in each of the discrete imaging systems is configured to have a pentagon shape wherein the edges of the pentagon shape have a length a, the diameter of a circle circumscribing the pentagon shape is equal to a/sin(36°

)=1.7013a, a radius of a sphere inscribed within the dodecahedron is equal to;

12. The multicamera panoramic imaging system of claim 7, wherein a front lens of each of the discrete imaging systems is a portion of a single, contiguous freeform optic.

13. The multicamera panoramic imaging system of claim 9, wherein the image sensor is a wavefront sensor.

14. The multicamera panoramic imaging system of claim 7, wherein each of the discrete imaging systems has a curved image plane so as to match a distortion and Petzval Curvature of the imaging system.