FEATURES OF VISION
Often the cause of an accident is poor visibility. The driver could be blinded by the headlights of an oncoming car, direct sunlight, glare, or did not have time to make out at dusk or due to bad weather an obstacle on the road. To increase safety and driving comfort allow special correctly
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A person can distinguish surrounding objects only under the condition that they are lit, and reflected light enters the retina of his eyes. Light is an electromagnetic wave, and they cause a visual sensation. The eyes of a person perceive the colors of the light spectrum differently. With the same illumination, the perception of red and blue is tens of times less than yellow and green. The sensitivity of the eyes to light with different wavelengths is shown by the so-called “visibility curve”. To improve the perception of less distinguishable colors and increase the contrast of vision, filters are used.
A negative effect on the human eye is exerted by certain fragments of the solar spectrum. It has a visible spectrum (light) and an invisible one - ultraviolet (UV) and infrared (IR).
In most people, under the influence, first of all, of UV and radiation close to it - violet, blue and blue - destructive changes in the eyes gradually accumulate, and vision worsens with age.
The most common tool that allows you to protect your eyes and correct vision, these are various glasses, but always correctly selected.
On fig:
X axis - wavelength in nanometers;
Y axis - eye sensitivity
LENSES AND LIGHT FILTERS
The best sunglasses for driving are designed to improve vision and protect the eyes, they can be:
The main detail of the glasses , which determines the purpose and quality, is with a veterinary filter or lens made of transparent materials, fixed in a frame. To protect the eyes from radiation over the lenses of corrective glasses, interchangeable filters are sometimes installed.
Light filters are plates, films, etc., partially or selectively absorbing various types of radiation. The filters can be flat or convex, but the thickness of the material over the entire surface is the same.
Lenses these are optical elements with curved surfaces and different thicknesses of material. Changing the shape of the inner and outer surfaces of the lenses and the distances between them allows you to get the required optical power, measured in diopters. In corrective glasses set collecting ("plus") and scattering ("minus") lenses. If necessary, corrective lenses can be given the properties of light filters.
Glass filters and lenses less than plastic, they distort objects, provide some protection against ultraviolet light, have high abrasion resistance - they are harder to scratch. Unfortunately, they are heavy and unsafe, since when destroyed, sharp fragments can damage the eyes. Due to their greater weight, glass lenses are less comfortable and convenient. In addition, they fog up faster and more if you enter a warm room from the cold.
A negative effect on the human eye is exerted by certain fragments of the solar spectrum. It has a visible spectrum (light) and an invisible one - ultraviolet (UV) and infrared (IR).
In most people, under the influence, first of all, of UV and radiation close to it - violet, blue and blue - destructive changes in the eyes gradually accumulate, and vision worsens with age.
The most common tool that allows you to protect your eyes and correct vision, these are various glasses, but always correctly selected.
On fig:
X axis - wavelength in nanometers;
Y axis - eye sensitivity
LENSES AND LIGHT FILTERS
The best sunglasses for driving are designed to improve vision and protect the eyes, they can be:
- corrective - correcting visual defects, mainly myopia and farsightedness;
- protective - protecting eyes from ultraviolet radiation and bright light;
- corrective and protective at the same time.
The main detail of the glasses , which determines the purpose and quality, is with a veterinary filter or lens made of transparent materials, fixed in a frame. To protect the eyes from radiation over the lenses of corrective glasses, interchangeable filters are sometimes installed.
Light filters are plates, films, etc., partially or selectively absorbing various types of radiation. The filters can be flat or convex, but the thickness of the material over the entire surface is the same.
Lenses these are optical elements with curved surfaces and different thicknesses of material. Changing the shape of the inner and outer surfaces of the lenses and the distances between them allows you to get the required optical power, measured in diopters. In corrective glasses set collecting ("plus") and scattering ("minus") lenses. If necessary, corrective lenses can be given the properties of light filters.
Glass filters and lenses less than plastic, they distort objects, provide some protection against ultraviolet light, have high abrasion resistance - they are harder to scratch. Unfortunately, they are heavy and unsafe, since when destroyed, sharp fragments can damage the eyes. Due to their greater weight, glass lenses are less comfortable and convenient. In addition, they fog up faster and more if you enter a warm room from the cold.