RU38681U1 - AN anti-glare system for drivers of vehicles - Google Patents

Abstract

Usage: on all types of vehicles. The inventive use of an anti-glare system consisting of one or more vehicles on which polarizing elements are mounted. On vehicles, polarization elements are installed: - in front of a light source (headlights) with a polarization axis located horizontally; - in front of an observer (vehicle driver) on the front window, on the side windows (on the driver’s side, for passengers), on the rear-view mirrors (side and internal) with the polarization axis located vertically. The installation of polarizing elements in this way eliminates the effect of blinding the drivers and passengers from: - the headlights of oncoming and overtaking vehicles; - ennyh from the road surface, sunlight in the morning and evening.

Description

The invention relates to the field of road vehicles and relates to improving traffic safety, eliminates the blinding effect:

- from oncoming and overtaking vehicles at night;

- from sunlight reflected from the road surface in the morning and evening. A device for preventing the blinding effect of headlights of a vehicle, changing the transmission of light to the driver. This device is a liquid crystal screen installed in front of the driver, and significantly absorbs the light of the headlights of an oncoming vehicle when an electric signal is applied to it [1]. However, devices containing such screens have the following disadvantages:

- unreasonably high cost (screen and control);

- when the light transmission of the screen changes, the driver poorly controls the road section illuminated by the headlights of his vehicle;

- Frequent change in the light transmission of the screen leads to rapid fatigue of the driver’s eyes. The closest to the claimed object technical solution, selected as a prototype, is a system [2], consisting of two or more vehicles on which polarizing elements are installed. On vehicles, polarization elements are installed:

- in front of the light source (headlights) and in front of the observer (driver of the vehicle) on the front glass, with the polarization axis located at an angle of 45 ° to the horizon;

- on rear-view mirrors, with a polarization axis located at an angle of 135 ° to the horizontal.

The installation of polarizing elements thus eliminates the effect of blinding drivers and passengers from the light of headlights of oncoming and overtaking vehicles.

The objective of the invention is to increase the safety of drivers of vehicles.

This is achieved by the fact that an anti-glare system is used, consisting of one or more vehicles on which polarizing elements are mounted. On a vehicle, polarization elements are installed:

- in front of a light source (headlights) with a polarization axis located horizontally;

- in front of the observer (driver of the vehicle) on the front glass, on the side windows (on the driver's side), on the rear-view mirrors (side and inside) with the polarization axis located vertically.

The installation of polarizing elements in this way eliminates the effect of blinding drivers and passengers from:

- headlights of oncoming and overtaking vehicles;

- reflected from the road surface of sunlight in the morning and evening. New features of the proposed device is the use of polarizing plates with horizontal and vertical axis of polarization.

An anti-glare system consists of one or more vehicles.

equipped with polarizing elements and installed:

- in front of a light source (headlights) with a polarization axis located horizontally;

- in front of observers:

- the driver of the vehicle on the front glass, rear-view mirrors (side and inside) with the polarization axis located vertically.

- vehicle passengers on the side windows (on the driver's side) with the polarization axis located vertically.

A distinctive feature of the anti-glare system is the use of polarization elements with a vertical and horizontal axis of polarization, instead of rotated by 45 ° and 135 ° to the horizontal surface. The installation of polarizing elements in this way eliminates the effect of blinding drivers and passengers from:

- headlights of oncoming and overtaking vehicles;

- sunlight reflected from the road surface in the morning and evening. The operation of this anti-glare system is based on the polarization effect. A stream of light passing sequentially through two polarizing elements, the polarizing axes of which are mutually perpendicular, is absorbed by the second element.

The polarization effect is observed when the optical axis of the polarized light source coincides with the axis of the observer with the polarizing element (see figure 1).

If the axis of the polarized light source does not coincide with the axis of the observer with the polarizing element, the polarization effect will be observed with directional (mirror) reflection of the polarized beam (see figure 2).

With diffuse reflection, a polarized light beam is reflected in all directions and loses its properties (see figure 3). In this case, the polarization effect will not be observed.

When vehicles move towards each other (see figure 4), a ray of light from the vehicle "A" passing through the polarizing element 2 is polarized in the horizontal plane and hits the polarizing element 3 (with a vertical axis of polarization) located on the front glass vehicle "B". The driver of the vehicle "B" will see the light source of the vehicle "A" weakened by 80-90%.

When the vehicles move in one direction (see Fig. 5), a ray of light from the vehicle "A", passing through the polarizing element 2, is polarized in the horizontal plane and hits the polarizing element 1 (with a vertical axis of polarization), placed on the rear mirror type, vehicle "B", while there will be a polarizing effect (the driver of the vehicle sees the reflected light of the vehicle attenuated by 80-90%).

When illuminating the space in front of the vehicle, diffuse reflection of light occurs, a polarized beam is reflected in all directions and loses its properties. The driver of the vehicle perceives reflected light from its own polarized light source without loss (see Fig.6).

The sun's rays, in the morning and evening, reflecting off the road surface, dazzle drivers of vehicles moving towards the sun. Sun rays reflected from the road surface have a directional (mirror) and diffuse component. The directionally reflected rays making up the main stream are polarized in the horizontal plane. The driver of the vehicle will perceive the flow of directionally reflected sunlight through a polarizing element with a vertical axis of polarization, attenuated by 80-90% (see Fig. 7).

Claims (1)

An anti-glare system containing polarizing elements installed in front of the light source and in front of the observer and located on the vehicle, characterized in that the polarizing elements with a horizontal axis of polarization are installed in front of the light source, and in front of the observer (on the front glass, on the rear-view mirrors, on the side glasses (on the driver's side)) - polarizing elements with a vertical axis of polarization.