Panoramic viewing system with shades

• US 6,356,397 B1
• Filed: 12/27/1999
• Issued: 03/12/2002
• Est. Priority Date: 11/30/1995
• Status: Expired due to Term

• Current Assignee: FullView, Inc.
• Original Assignee: FullView, Inc.
• Inventors: Nalwa, Vishvjit Singh
• Primary Examiner(s): NGUYEN, THONG Q
• Application Number:
  US09/431,400
• Time in Patent Office: 806 Days
• Field of Search: 359/367, 359/399, 359/402, 359/403, 359/725, 359/726, 359/730, 359/831-837, 348/36-39, 353/30, 353/94, 353/98-99, 352/69-71
• US Class Current: 359/725
• CPC Class Codes: G02B 27/1066 for enhancing image performance, like resolution, pixel numbers, dual magnifications or dynamic range, by tiling, slicing or overlapping fields of view
• CPC Class Codes: G02B 27/143 using macroscopically faceted or segmented reflective surfaces
• CPC Class Codes: G02B 5/04 Prisms
• CPC Class Codes: G03B 17/17 with reflectors arranged in beam forming the photographic image, e.g. for reducing dimensions of camera
• CPC Class Codes: G03B 37/04 with cameras or projectors providing touching or overlapping fields of view
• CPC Class Codes: H04N 23/58 Means for changing the camera field of view without moving the camera body, e.g. nutating or panning of optics or image sensors
• CPC Class Codes: H04N 5/2628 Alteration of picture size, shape, position or orientation, e.g. zooming, rotation, rolling, perspective, translation
• CPC Class Codes: H04N 5/74 Projection arrangements for image reproduction, e.g. using eidophor
• CPC Class Codes: H04N 7/181 for receiving images from a plurality of remote sources

Abstract

Cameras are positioned so that they each view a different reflective surface of a polyhedron such as a pyramid. This results in each camera having a virtual optical center positioned within the pyramid. The cameras are positioned so that their virtual optical centers are offset from each other. The offsets produce narrow blind regions that remove image distortions received from the edges of the pyramid'"'"'s reflective surfaces. Additionally, planar shades that extend in an outward direction are positioned in the blind regions.

Claims

1. A viewing apparatus having a composite field of view, comprising:

at least two image transducers, each having an individual field of view;

a reflective element having at least one reflective area that is positioned to redirect at least part of the field of view associated with a first one of the image transducers;

at least part of the redirected field of view being merged with at least part of the field of view associated with the second one of the image transducers to produce the composite field of view of the viewing apparatus, these parts of the fields of view associated with the first and second image transducers being arranged with respect to the reflective area to create a blind region that is not in either of these two parts of the fields of view, that encompasses a portion of an edge of the reflective area, and that is located between the parts of the two fields of view associated with the first and second image transducers that produce the composite field of view.

2. The viewing apparatus of claim 1, wherein a shade is positioned in the blind region of the composite field of view, between portions of the two fields of view associated with the first and second image transducers.

3. The viewing apparatus of claim 1, wherein the reflective element has a second reflective area and at least a part of the field of view of the second image transducer is redirected by the second reflective area, and at least parts of the two redirected fields of view, each associated with one of the image transducers, are merged to produce the composite field of view of the viewing apparatus.

4. The viewing apparatus of claim 3, wherein a shade is positioned in the blind region of the composite field of view, between portions of the two fields of view associated with the first and second image transducers.

5. The viewing apparatus of claim 1, wherein the reflective element is not within the part of the field of view associated with the second one of the image transducers that is used to produce the composite image.

6. The viewing apparatus of claim 5, wherein a shade is positioned in the blind region of the composite field of view, between portions of the two fields of view associated with the first and second image transducers.

7. The viewing apparatus of claim 1, wherein the image transducers are image capture devices.

8. The viewing apparatus of claim 7, wherein a shade is positioned in the blind region of the composite field of view, between portions of the two fields of view associated with the first and second image capture devices.

9. The viewing apparatus of claim 1, wherein the image transducers are image producing devices.

10. The viewing apparatus of claim 9, wherein a shade is positioned in the blind region of the composite field of view, between portions of the two fields of view associated with the first and second image producing devices.