DE7012544U - DEVICE FOR GLARE PROTECTION IN MOTOR VEHICLES. - Google Patents

Description

Horst Krügerschmidt, Dortmund - woodlice

and

Harald Arsan, Bochum - Gerthe

Device for glare protection in vehicles.

The invention relates to a device for anti-glare protection in vehicles, in particular for anti-glare protection in motor vehicles, consisting of a polarizer and analyzer.

Various devices for glare protection, in particular in vehicles, have already been proposed some of which are attached to or in the vehicle, for example windshields or folding blinds made of a material with isotropic absorption, or the

are designed as glasses with the same or polarizing material. More Disadvantage of these known anti-glare devices can be seen in the fact that in the case of Tön motor vehicles they xxiuhi, alone only absorb some of the headlights of oncoming vehicles, but also the light of those with these devices the intensity and range of equipped vehicles can be significantly affected and moreover blur the contrasts.

The invention is based on the object of providing a device for glare protection in vehicles, especially anti-glare protection in motor vehicles of the type mentioned above create, by means of which the disadvantages of the known devices are avoided, and which can also be produced in the simplest possible way and for night trips Motorways and trunk roads are particularly suitable. These objects are achieved according to the invention solved in that the polarizer in the form of glasses with crescent-shaped half-glasses, the analyzer as a rotation point swiveling pre-storage filter formed and the polarizer with the analyzer are made of polarizing material.

In a preferred embodiment, the polarizer has the shape of an upwardly tapering one crescent-shaped half-glasses and is

the analyzer on the sun visor of a vehicle, for example a motor vehicle, pivotally attached. The analyzer is expediently in the form of a right-angled, unequal-sided triangle or an irregular quadrilateral, which is continuously variable around a pivot point can be pivoted and locked in any position, with the analyzer in right-hand traffic on the left-hand side and, if driving on the left, on the right-hand side of the sun visor is arranged. The sickle-shaped ones are the same for pike traffic Polarizers for those looking through left- and arranged on the right for left-hand traffic. In further training of the device according to According to the invention, the polarizer is designed as a connector for eyeglass frames or expediently in plane or optically ground, colored or uncolored spectacle lenses incorporated. To compensate for the parallax, the left polarizer is used in right-hand traffic made larger in relation to the right polarizer and made larger in left-hand traffic the right polarizer.

The advantages of the device for glare protection according to the invention are in particular therein to see that in the simplest possible way a free and unobstructed view ahead as well as on the sides of a roadway on which the vehicle is moving is guaranteed, whereby the

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Light of the vehicle equipped with the device according to the invention neither in the Intensity is still impaired in range. Lurch the device according to the invention is also a visual obstruction in the case of windshields made of hardened safety glass through binocular gloss phenomena as a result of tension birefringence locked out.

As long as the vehicles are at a greater distance from one another, the light from the oncoming vehicle - depending on the position of the head - first travels into the polarizing crescent-shaped half-glasses.This results in an initially weak light attenuation due to simple polarization, which is appropriate for the relatively large distance and for the eye is beneficial. As the vehicles get closer, the light source of the oncoming vehicle moves into the previously individually set pre-filter

The light intensity, which has become stronger with further approach, is namely through the analyzer half-glasses and the polarizer pre-filter. As the laser moves closer to the vehicle, the initially acute angle between the driver's eye and the oncoming headlights becomes larger and larger until it is passed by

Reached 90 degrees.

This effect of the angle changes r ... * \ has a 1 a

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from, v / eil larger by changing the angle of view of the angle of the polarization grating and thus becomes more effective. The effect is as follows: Distant vision: clear - approximate light source: slightly subdued light - closer light source (Viewing angle approx. 45 degrees): light blue colored light source - gana near light source (viewing angle approx. 70 - 90 degrees): dark blue subdued light source.

The view outside the glare zone always remains unobstructed.

In the drawing, the device for glare protection according to the invention is based on an exemplary embodiment explained in more detail.

The embodiment of the device for glare protection shown in the drawing (Fig. 1) is preferably intended for use in motor vehicles and consists of a polarizer 1 in the form of glasses with crescent-shaped half-glasses 2 and an analyzer 3 in the form of a right-angled, single line unilateral triangle or an irregular square shaped pre-filter with sufficient mechanical strength. Both the analyzer 3 and the Polariaa

gate 1 are made of polarizing material; the analyzer 3 is around a pivot point 4 pivotable in the direction of the wedge 5 and, for example, on the sun visor, not shown of the motor vehicle arranged on the driver's side. As a polarizer trained glasses with the crescent-shaped half-glasses 2, which also expediently can be designed as clip-on glasses, is oriented so that their direction of oscillation depending on the degree of polarization of the reflected light, those in nature mainly occurring reflexes in the direction of oscillation crosses and wholly or partially deletes. To compensate for the parallax, the left polarizer is used in right-hand traffic in relation to the right polarizer, while left-hand traffic the. Conditions are reversed.

As FIG. 2 shows, the upstream filter, designed as an analyzer 3, is available when it is full is pivoted out, in a position of 90 ° to that designed as a polarizer 1 sickle-shaped half-glasses, so that the greatest possible light attenuation is achieved. By a stepless pivoting of the series filter from the one shown in Fig. 2, about the position shown in Fig. 3 can optionally be in the position shown in Fig. 4 with be swiveled at an angle of about 45 °, so that an individual setting with appropriate

sprecl · ηά ^ ringer absorption is possible. In the rotated position, the upstream filter can then be locked in a ν ^ r.k-normal manner. In this position of the Voysohalt filter, when vehicles approach each other, the dazzling headlights of the oncoming vehicle move approximately parallel to the hypotenuse into the lower left area of the analyzer 3 and, by slightly lowering the driver's head, are removed from the polarizer 1, the sickle-shaped one Half glasses, covered and attenuated or deleted by egg polarization, whereby
the view to the front and to the right is unobstructed
remains. By lifting your head slightly
of the driver, the point of intersection of the visual axis is advantageously relocated below the field of view covered by the polarizing, sickle-shaped half-glasses, so that
the view is unobstructed and the light from your own headlights is not polarized.

Expectations

Claims (9)

Expectations 1) Vor.-.-, .-. ^ G for glare protection in vehicles, ΤΠ fiVl ^ ertV testify, consisting of polarizer and analyzer, characterized in that the polarizer is in the form of glasses with crescent-shaped half-glasses, the analyzer is designed as a pivotable upstream filter, and the polarizer with the analyzer are made of polarizing material. 2) Device according to claim 1, characterized in that the polarizer has the shape of a crescent-shaped half-glasses tapering at the top and the analyzer is pivotably attached to the sun visor of a vehicle, for example a motor vehicle. 3) Device according to claims 1 and 2, characterized in that the analyzer the Has the shape of a right-angled, non-equilateral triangle or that of an irregular quadrilateral. 4) Device according to claims 1 to 3, characterized in that the analyzer to a pivot point is infinitely pivotable and lockable in every position. β «·· ■ · "egg 5) Device according to claims 1 to 4, characterized characterized that the Anr ^ ysator at Right-hand traffic on the left-hand side and, in the case of left-hand traffic, on the right-hand side of the Son— ~ nenblende is arranged. 6) Device according to claims 1 and 2, characterized in that when driving on the right the crescent-shaped polarizers for those looking through left and left-hand traffic are arranged on the right. 7) Device according to claims 1, 2 and 6, characterized in that the polarizer is designed as a clip-on for glasses frames. 8) Device according to claims 1, 2, ^ and 7, characterized in that the sickle ?: mi— gen polarizers are incorporated into plane or optically ground, colored or uncolored spectacle lenses. 9) Device according to claims 1, 2 and 6 to 8, characterized in that to compensate for the parallax in right-hand traffic, the left polarizer is made larger in relation to the right polarizer and in left-hand traffic the right polarizer is made larger · '.