Polarizing system for motion visual depth effects

• US 6,198,524 B1
• Filed: 04/19/1999
• Issued: 03/06/2001
• Est. Priority Date: 04/19/1999
• Status: Expired due to Fees

• Current Assignee: Evergreen Innovations LLC
• Original Assignee: Evergreen Innovations LLC
• Inventors: Osgood, Alan George
• Primary Examiner(s): Adams, Russell
• Assistant Examiner(s): FULLER, RODNEY EVAN
• Application Number:
  US09/294,123
• Time in Patent Office: 687 Days
• Field of Search: 352/43, 352/57, 352/60, 352/86, 353/8, 353/10, 359/464, 359/478, 348/58
• US Class Current: 352/43
• CPC Class Codes: G02B 30/25 using polarisation techniques
• CPC Class Codes: G03B 35/26 using polarised or coloured light separating different viewpoint images
• CPC Class Codes: H04N 13/337 using polarisation multiplexing
• CPC Class Codes: H04N 13/363 using image projection screens volumetric display H04N13/388

Abstract

A system for creating the perception of visual depth in scenery comprising lateral movements. A polarizing projection filter 21 controls the plane of polarization of projected light. The plane of polarization is changed by changing the orientation of the polarizing projection filter. An observer wears special viewing glasses 22 with polarizing filters when viewing scenery illuminated by the polarizing projection filter. The plane of polarization of the polarizing viewing filter for the right eye 23 is rotated 45 degrees clockwise from horizontal. The plane of polarization of the polarizing viewing filter for the left eye 24 is rotated 45 degrees counterclockwise from horizontal. When the polarizing projection filter is rotated clockwise from horizontal the scenery appears brighter to an observer'"'"'s right eye than to the observer'"'"'s left eye. Objects moving laterally 42 from right to left from the observer'"'"'s perspective appear closer to the observer 43. Objects moving from left to right appear farther away from the observer. When the polarizing projection filter is rotated counterclockwise from horizontal the scenery appears brighter to an observer'"'"'s left eye than to the observer'"'"'s right eye. Objects moving from right to left from the observer'"'"'s perspective appear farther away from the observer. Objects moving from left to right appear closer to the observer. In the first and second embodiment of the invention, the scenery comprises polarized imagery projected on a viewing screen. In the third embodiment, the scenery comprises live scenes illuminated by polarized light. The scenery can be viewed in full color. The dead eye effect can be avoided by periodically changing the plane of polarization of the polarizing projection filter.

Claims

1. A method of using projected imagery in which some objects in the imagery are moving laterally, which when said imagery is projected through a polarizing projection filter and observed through polarizing viewing glasses, provides visual depth effects, the method comprising:

using viewing glasses comprising a light polarizing means for transmitting light to an observer'"'"'s left eye and a light polarizing means for transmitting light to the observer'"'"'s right eye, and the plane of polarization of said light polarizing means for the right eye having an angular offset of 90 degrees from the plane of polarization of said light polarizing means for the left eye;

orienting the plane of polarization of the polarizing projection filter with less angular offset from the plane of polarization of the light transmitting means for the left eye than to the plane of polarization of the light transmitting means for the right eye, and

selecting objects which move from left to right from the observer'"'"'s perspective to create the perception that the objects are closer to the observer, and

selecting objects which move from right to left to create the perception that the objects are farther away from the observer; and

orienting the plane of polarization of the polarizing projection filter with less angular offset from the plane of polarization of the light transmitting means for the right eye than to the plane of polarization of the light transmitting means for the left eye, and

selecting objects which move from left to right from the observer'"'"'s perspective to create the perception that the objects are farther away from the observer, and

selecting objects which move from right to left to create the perception that the objects are closer to the observer.

2. A method of using live scenes in which some objects in the scenes are moving laterally, which when said scenes are illuminated by light projected through a polarizing projection filter and observed through polarizing viewing glasses, provides visual depth effects, the method comprising:

using viewing glasses comprising a light polarizing means for transmitting light to an observer'"'"'s left eye and a light polarizing means for transmitting light to the observer'"'"'s right eye, and the plane of polarization of said light polarizing means for the right eye having an angular offset from the plane of polarization of said light polarizing means for the left eye;

orienting the plane of polarization of the polarizing projection filter with less angular offset from the plane of polarization of the light transmitting means for the left eye than to the plane of polarization of the light transmitting means for the right eye, and

selecting objects which move from left to right from the observer'"'"'s perspective to create the perception that the objects are closer to the observer, and

selecting objects which move from right to left to create the perception that the objects are farther away from the observer; and

orienting the plane of polarization of the polarizing projection filter with less angular offset from the plane of polarization of the light transmitting means for the right eye than to the plane of polarization of the light transmitting means for the left eye, and

selecting objects which move from left to right from the observer'"'"'s perspective to create the perception that the objects are farther away from the observer, and

selecting objects which move from right to left to create the perception that the objects are closer to the observer.

3. A process of operating a data processor of known type with a visual display of known type, wherein said data processor generates polarized imagery on said visual display, said polarized imagery provides visual depth effects when the imagery is viewed through viewer glasses comprising a light polarizing means for transmitting light to an observer'"'"'s left eye and a light polarizing means for transmitting light to the observer'"'"'s right eye, and the plane of polarization of said light polarizing means for the right eye having an angular offset from the plane of polarization of said light polarizing means for the left eye;

said process comprising;

producing polarized imagery on the visual display with the plane of polarization aligned more with the plane of polarization of the light polarizing means for the left eye than the plane of polarization of the light polarizing means for the right eye, comprising laterally moving objects which move from left to right from the observer'"'"'s perspective to create the perception of being closer to the observer, and which move from right to left to create the perception of being farther from the observer; and

producing polarized imagery on the visual display with the plane of polarization aligned more with the plane of polarization of the light polarizing means for the right eye than the plane of polarization of the light polarizing means for the left eye, comprising laterally moving objects which move from right to left from the observer'"'"'s perspective to create the perception of being closer to the observer, and which move from left to right to create the perception of being farther from the observer.