Information system and method for providing information using a holographic element
AssigneeMetaio GmbH
InventorsRonald H. Eberl, Heinrich A. Eberl, David Dickerson
Life of this patent
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Abstract
In an information system and a method for providing information in correlation with light that is incident on an eye, a pair of spectacles includes a holographic element that is supported in front of the eye of a wearer of the spectacles. An optical scanning device detects light that is incident on the eye via the holographic element.
Claims16
An information system for providing information in correlation with light incident on an eye, said system comprising:
- a holographic element disposed in front of the eye;
- and
- an optical scanning device which detects light incident on the eye via the holographic element;
- wherein the optical scanning device detects light which is diffracted by the holographic element before it impinges on the eye, and does not enter the eye.
An information system for providing information in correlation with information obtained from an eye, said system comprising:
- a holographic element disposed in front of the eye;
- and
- an optical projection device which projects light into the eye via the holographic element;
- wherein,
- the holographic element diffracts wavelengths of the projected light;
- and
- the holographic element comprises at least one optical marking, whose light reflection characteristics can be used by the information system by means of a photodetector for calibrating a projection angle of at least one of the optical projection device and a light guiding device.
An information system for providing information with respect to an eye, said system comprising:
- spectacles including a holographic element disposed in front of the eye;
- a camera configured and arranged to detect light from an environment ambient to said eye;
- and
- an optical projection device which projects light into the eye via the holographic element.
An information system for providing information with respect to an eye, said system comprising:
- spectacles including a holographic element disposed in front of the eye;
- and
- an optical projection device including an LED that projects light into the eye via the holographic element;
- wherein the holographic element diffracts wavelengths of the projected light.
An information system for providing information to an eye, said system comprising:
- spectacles including a holographic element disposed in front of the eye;
- and
- an optical projection device that projects light into the eye via the holographic element;
- wherein
- the holographic element has light-diffracting characteristics at at least a first discrete wavelength, which corresponds to a reflection on the concave side of a surface constructed according to the curvature of a rotationally symmetrical ellipsoid;
- the holographic element has light-diffracting characteristics at at least a second discrete wavelength, which corresponds to a diffraction on the concave side of a surface constructed according to the curvature of a rotationally symmetrical ellipsoid;
- and
- said diffraction corresponds to a reflection on a respective conical surface which is rotationally symmetrical about the axis of rotation of the ellipsoid and is perpendicular with respect to the ellipsoid at the site of the diffraction.
Dependencies are inferred from the claim text.