Sun shield

Patent metadata

Field	Value
Publication number	US-11084357-B2
Application number	US-201615245256-A
Country	US
Kind code	B2
Filing date	Aug 24, 2016
Priority date	Feb 25, 2014
Publication date	Aug 10, 2021
Grant date	Aug 10, 2021

Abstract

A method and a corresponding device for providing a glare shield in a vehicle is designed to select a first element from the plurality of elements of the first layer, so that the first element lies on a light trajectory between the source of glare and a first eye of the viewer, the light trajectory between the source of glare and the first eye lies within the viewing direction range of the first element, and a light trajectory between the source of glare and a second eye of the viewer lies outside of the viewing direction range of the first element.

First claim

What is claimed is:

1. A glare shield device which is configured to selectively and at least partially block light from a source of glare, from reaching an eye of a viewer, the glare shield device comprising:
at least a first translucent layer having a multiplicity of elements, wherein
the translucency of the multiplicity of elements are separately changeable,
the multiplicity of elements each have a different viewing direction range which is limited to at most a given angle, such that a reduction in the translucency of an element is perceived more strongly when viewing with the eye of the viewer from a direction within the viewing direction range than when viewing from a direction outside the viewing direction range,
the glare shield device is configured to set a first element from a multiplicity of elements of the first translucent layer,
the first element lies between the source of glare and a first eye of the viewer,
a light trajectory lies between the source of glare and the first eye of the viewer within viewing direction range of the first element, and
a light trajectory between the source of glare and a second eye of the viewer lies outside the viewing direction range of the first element.

2. The glare shield device as claimed in claim 1 , wherein the glare shield device comprises a second translucent layer having a multiplicity of elements; wherein the glare shield device is configured to select a second element from the multiplicity of elements of the second layer in such a way that
the second element lies on a light trajectory between the source of glare and the second eye of the viewer,
the light trajectory between the source of glare and the second eye lies within a viewing direction range of the second element; and
a light trajectory between the source of glare and the first eye of the viewer lies outside the viewing direction range of the second element.

3. The glare shield device as claimed in claim 2 , wherein
the viewing direction range has a direction range boundary; and
the direction range boundaries of the viewing direction ranges of the second layer are mirror-symmetrical with respect to the direction range boundaries of the viewing direction ranges of the first translucent layer.

4. The glare shield device as claimed in claim 3 , wherein
the viewing direction ranges of the elements of two different layers of the multiplicity of translucent layers are different; and
the glare shield device is configured to select the first translucent layer as a function of the viewing direction ranges.

5. The glare shield device as claimed in claim 4 , wherein the viewing direction ranges of the elements change along a surface axis of the first translucent layer.

6. The glare shield device as claimed in claim 5 , wherein
elements of the first translucent layer are configured to at least partially block the light from one or more sources of glare from reaching the first eye by reducing the translucency, so that the reduced translucency cannot be perceived substantially by the second eye; and
one or more layers having elements which are configured to at least partially block the light from the one or more sources of glare from reaching the second eye by reducing the translucency, so that the reduced translucency cannot be perceived substantially by the first eye.

7. The glare shield device as claimed in claim 6 , wherein the glare shield device comprises a darkening layer having elements which are configured to at least partially block the light from the one or more sources of glare from reaching the first eye and the second eye by reducing the translucency.

8. The glare shield device as claimed in claim 7 , wherein
the glare shield device comprises one or more self-illuminating display layers; and
the glare shield device is configured to display information on the darkening layer by means of the one or more self-illuminating display layers.

9. The glare shield device as claimed in claim 8 , wherein the viewing direction ranges of the elements of two different layers of the multiplicity of translucent layers are different.

10. The glare shield device as claimed in claim 9 , wherein the glare shield device is configured to select one of the first or second translucent layers as a function of a position of the source of glare, so that the source of glare of a first eye of the viewer is located within the viewing direction range of at least one element of the multiplicity of elements of the first layer, and in this way the source of glare of a second eye of the viewer is located outside the viewing direction range of the at least one element of the multiplicity of elements of the first layer.

11. The glare shield device as claimed in claim 10 , wherein the viewing direction ranges of the elements change along a surface axis of the first translucent layer.

12. The glare shield device as claimed in claim 11 , wherein
the viewing direction range has a direction range boundary; and
the direction range boundaries of the viewing direction ranges of the elements along the surface axis of the first translucent layer are directed onto a common point on a transverse axis perpendicular with respect to the surface axis of the first translucent layer.

13. The glare shield device as claimed in claim 12 , wherein the common point corresponds to a center point on an axis between a first eye and a second eye of the viewer.

14. The glare shield device as claimed in claim 13 , wherein the glare shield device is configured
to determine a focal point; and
to change the direction range boundaries of the viewing direction ranges of the elements along the surface axis of the first translucent layer in such a way that the direction range boundaries are directed onto the focal point.

15. The glare shield device as claimed in claim 14 , wherein the glare shield device is configured to regulate the direction range boundaries with respect to a changing focal point by means of a control loop.

16. The glare shield device as claimed in claim 15 , wherein the glare shield device is configured
to determine data relating to an acceleration of a vehicle;
to predict a position of the eye of the viewer taking into account the data relating to the acceleration of the vehicle;
to select an element from the multiplicity of elements of the translucent layer, so that the element lies on a light trajectory between the source of glare and the predicted position of the eye of the viewer; and
to reduce the translucency of the selected element.

17. The glare shield device according to claim 16 , wherein the glare shield device is configured to be arranged movably in the passenger compartment of a vehicle, so that the glare shield device is movable into a folded-down position and into a folded-up position, wherein in the folded-down position the glare shield device conceals the view of an occupant of the vehicle of part of a window of the vehicle; wherein the glare shield device comprises
a carrier part through which a base portion of a glare shield area of the glare shield device is made available; and
a movable part which is movably arranged in the glare shield device and which is configured to increase the glare shield area of the glare shield device beyond the base portion.

18. The glare shield device as claimed in claim 17 , wherein
the glare shield device comprises a glare shield area;
the glare shield area has a curvature; and
in the folded-down position of the glare shield device, the curvature is convex in relation to the window of the vehicle.

Assignees

• Bayerische Motoren Werke Ag

Inventors

• Huber Wolfgang-Andreas

Classifications

• G02B5/0278

  used in transmission · CPC title

• G02B5/20

  Filters (polarising elements G02B5/30) · CPC title

• E06B2009/2447

  Parallel screens · CPC title

• G02F1/0121

  Operation of devices; Circuit arrangements, not otherwise provided for in this subclass · CPC title

• E06B2009/2405

  Areas of differing opacity for light transmission control · CPC title