Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Eye exercising or training type
Patent
1998-06-15
2000-06-20
Manuel, George
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Eye exercising or training type
A61B 300
Patent
active
060769289
ABSTRACT:
The teachings of the present invention aid a user in attaining an ergonomic position with respect to a remote object such as a display screen (e.g., VDT) or a manufacturing tool. To that end, various mechanisms which feedback to the viewer information related to position and orientation are taught. A first aspect incorporates a feedback mechanism into a display screen. The feedback mechanism could be formed in a variety of manners. In one embodiment, four lights are arranged such that a viewer in the proper orientation will perceive all four lights. However, as the viewer's orientation varies, one or more of the lights is concealed, thereby indicating to the user that the orientation is improper. In another embodiment, the cluster of lights is replaced with a cluster of four distinct pieces of diffraction grating. The diffraction grating could be such that the intensity of the reflected light varies as the viewer's orientation varies. Alternatively, a hologram could arranged such that the image presented to the viewer changes, even presenting informative text to the viewer. Another aspect of the present invention teaches a feedback mechanism that further provides visual feedback regarding position information. In one embodiment, a strip of diffraction grating or other suitable material is applied upon the display screen. The strip is formed such that depending upon the viewers position, the viewer perceives a certain image (e.g., "20 Inches," the color green).
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Fateh Sina
Flack James F.
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