Visual display system and method for displaying images utilizing a holographic collimator

• US 6,814,578 B2
• Filed: 04/11/2002
• Issued: 11/09/2004
• Est. Priority Date: 04/11/2002
• Status: Active Grant

• Current Assignee: The Boeing Co.
• Original Assignee: The Boeing Co.
• Inventors: Vorst, Carl J.
• Primary Examiner(s): Cheng, Joe H.
• Application Number:
  US10/122,281
• Publication Number:
  US 20030194683A1
• Time in Patent Office: 943 Days
• Field of Search: 434/29, 434/30, 434/35, 434/38, 434/43, 434/44, 434/69, 434/307.R, 434/365, 434/372, 348/36, 348/38, 348/39, 348/58, 348/115, 348/123, 348/264, 348/383, 359/13, 359/15, 359/19, 359/20, 359/22, 359/26, 359/32, 359/451, 359/454, 359/459, 359/631, 359/725, 359/728, 359/729, 359/900, 345/1.1, 345/1.3, 345/6, 345/7, 345/31, 345/32, 349/11, 349/13, 349/62, 349/65, 349/67, 351/158, 351/201, 156/242, 156/245, 156/307.7
• US Class Current: 434/38
• CPC Class Codes: A63F 2300/203 Image generating hardware
• CPC Class Codes: G09B 9/30 Simulation of view from aircraft
• CPC Class Codes: G09B 9/326 the image being transformed by optical means

Abstract

The present invention provides a visual display system that comprises an image generator and a plurality of adjacent video display modules. The image generator may be adapted to generate a video image viewable by an operator of the visual display system, where the video image may be representative of a portion of a composite display image. The plurality of adjacent video display modules include displays that may be adapted to display the portion of the composite display image, where the video display may be remotely coupled to the image generator and may be responsive to the video image generated by the image generator. The video display modules further comprise a plurality of holographic analogs of collimating mirrors (hereinafter called holographic collimators), each of the holographic collimators associated with each of the modules and positioned between the operator and the video display, where each of the holographic collimators allows the operator to view a portion of a display area of the video display module with a degree of head motion. The holographic collimators associated with adjacent modules are joined together along their edges and positioned to tessellate a sphere partially surrounding the operator, thereby permitting the operator to view the composite display image displayed on the plurality of video display modules through the plurality of holographic collimators and perceive the composite display image as a continuous far-focused virtual image, and wherein the distance of the video image displayed by the video display may be located at substantially half of an effective radius of a holographic analog of the collimating mirrors.

Claims

1. A visual display system comprising:

an image generator adapted to generate a video image viewable by an operator of the visual display system, wherein the video image may be representative of a portion of a composite display image; and

a plurality of adjacent video display modules comprising;

a video display adapted to display the portion of the composite display image, wherein the video display may be remotely coupled to the image generator and may be responsive to the video image generated by the image generator; and

a plurality of holographic collimators, each of the collimators associated with each of the modules and positioned between the operator and the video display, wherein each of the collimators allows the operator to view a portion of a display area of the video display with a degree of head motion, and wherein each of the plurality of collimators comprise at least one of a following element from a group consisting of a first thin panel off-axis holographic lens collimating the light from the video display in an off-axis direction and a second thin panel off-axis holographic lens directing the video image to an on-axis direction;

wherein the holographic collimators associated with adjacent modules are joined together along their edges and positioned to tessellate a sphere partially surrounding the operator, thereby permitting the operator to view the composite display image displayed on the plurality of video displays through the plurality of holographic collimators and perceive the composite display image as a continuous far-focused virtual image; and

wherein the distance of the video image displayed by the video display may be substantially at half the effective radius of a holographic analog of the collimators.

2. The visual display system of claim 1 further comprising a database, the database comprising data accessed by the image generator to generate the video image, wherein the database may be operably coupled to the image generator.

3. The visual display system of claim 2 further comprising a display system controller adapted to provide each module with an index into the database thereby allowing the image generator to access data associated with the portion of the composite video image displayed on the video display, wherein the display system controller may be operably coupled to the image generator and to the database.

4. The visual display system of claim 3, wherein the display system controller receives inputs from the operator.

5. The visual display system of claim 1, wherein the image generator generates the video image such that the operator may view the composite display image as a continuous image with a degree of head motion.

6. The visual display system of claim 1, wherein the portion of the composite display image displayed on each video display overlaps the portion of the composite display image displayed on adjacent video displays and wherein each collimator may be positioned such that the portion of the display area viewed by the operator through each collimator does not overlap any of the portion of the display area viewed by the operator through adjacent collimators.

7. The visual display system of claim 1, wherein each of the plurality of collimators are oriented parallel to their associated video displays and substantially perpendicular to a line extending from the operator'"'"'s viewing volume to a center of the associated video displays.

8. The visual display system of claim 1 wherein:

the first thin panel off-axis holographic lenses is comprised of a set of three narrowband holographic lenses collimating the light from the video display in an off-axis direction; and

wherein

the second thin panel off-axis holographic lenses is comprised of a set of three narrowband holographic lenses directing the video image to an on-axis direction.

9. The visual display system of claim 1, wherein the holographic collimators are holographic collimating mirrors.

14. A method for displaying images, the method comprising:

providing the visual display system of claim 1 comprising an image generator, a database, and a plurality of adjacent video display modules, wherein the video display modules include a video display and a plurality of holographic collimators;

generating a video image representative of a portion of a composite display image with the image generator;

storing data accessed by the image generator to generate the video image created from the database;

displaying the portion of the composite display image with the video display; and

permitting the viewing of the displayed portion of the composite display image through a holographic representation using the plurality of holographic collimators.

15. The method of claim 14 further comprising accessing data associated with the portion of the composite video image displayed on the video display with the image generator.

16. The method of claim 14 further comprising overlapping the portion of the composite display image displayed on the video display with portions of the composite display image displayed on adjacent video displays.

17. A method for displaying images, the method comprising:

providing the visual display system of claim 1 comprising an image generator, a data base, and a plurality of adjacent video display modules, wherein the video display modules include a video display and a plurality of holographic collimators;

generating a video image representative of a portion of a composite display image with the image generator;

storing data accessed by the image generator to generate the video image created from the database;

displaying the portion of the composite display image with the video display;

permitting the viewing of the displayed portion of the composite display image through a holographic representation using the plurality of holographic collimators providing a display system controller and indexing into the database with the display system controller; and

accessing data associated with the portion of the composite video image displayed on the video display with the image generator.

10. An aircraft flight simulator comprising:

a first visual display system adapted to be operated by a first operator; and

a second visual display system adapted to be operated by a second operator, wherein the second visual display system may be co-located with the first visual display system and may be located behind the first visual display system;

wherein the visual display systems comprise;

an image generator adapted to generate a video image viewable by the operators of the visual display system, wherein the video image may be representative of a portion of a composite display image; and

a plurality of adjacent video display modules comprising;

a video display adapted to display the portion of the composite display image, wherein the video display may be remotely coupled to the image generator and may be responsive to the video image generated by the image generator; and

a plurality of holographic collimators, each of the collimators associated with each of the modules and positioned between the operators and the video display, wherein each of the collimators allows the operators to view a portion of a display area of the video display with a degree of head motion;

wherein the collimators associated with adjacent modules are joined together along their edges and positioned to tessellate a sphere partially surrounding the operator, thereby permitting each of the operators to simultaneously and independently view the composite display image displayed on the plurality of video displays through the holographic collimators and perceive the composite display image as a continuous far-focused virtual image; and

wherein a portion of the second visual display system does not contain any video display modules such that the second operator can directly view the positions and movements of the first operator.

11. The aircraft flight simulator of claim 10 wherein the second operator can view parts of the composite display image on the first visual display system that do not appear on the second visual display system.

12. The aircraft flight simulator of claim 11 wherein the second operator can view the part of the composite display image on the first visual display system together with the portion of the composite display of the second visual display system as a continuous image with a degree of head motion.

13. A visual display system comprising:

an image generator adapted to generate a video image viewable by a first pilot and a second pilot of the visual display system, wherein the video image may be representative of a portion of a composite display image; and

a first set of video display modules adjacent to a second set of video display modules, each of the video display modules comprising a video display adapted to display the portion of the composite display image, wherein the video display may be coupled to the image generator and may be responsive to the video image generated by the image generator;

wherein the first set of video display modules comprise a plurality of holographic collimators, each of the collimators associated with each of the video display modules of the first set and positioned between the first pilot and the video display, wherein each of the collimators restricts the first pilot'"'"'s field of view such that the first pilot views only a portion of a display area of the video display;

wherein the second set of video display modules comprise a plurality of holographic collimators, each of the holographic collimators associated with each of the video display modules of the second set and positioned between the second pilot and the video display, wherein each of the holographic collimators restricts the second pilot'"'"'s field of view such that the second pilot views only a portion of a display area of the video display;

wherein the collimators associated with adjacent video display modules are joined together along their edges and positioned to tessellate a sphere partially surrounding each pilot, thereby permitting pilot to view the composite display image displayed on the plurality of video displays through the plurality of collimators and perceive the composite display image as a continuous far-focused virtual image; and

wherein the second set of video display modules contains less video display modules than the first set of video display modules such that the second pilot can directly view the positions and movements of the first pilot.