Sunglases from Rodenstock

History

There have always been situations where man has tried to protect his eyes against the prevailing dazzling light conditions, At first, instruments were constructed which, based on the principle of screwing up your eyes, reduced the opening for the incident light to a narrow slit, barer, the first coloured lenses were used, In 1716 a glass grinder by the name of Hertel recommended that "which gives somewhat green light is better than the totally white light, as this dazzles, and held before the eyes helps increase the vision"

In 1877, upon opening thiis first retail shop in Würzburg, Josef Rodenstock also offered a small selection of sunglasses .Today, Rodenstock is one of the leading brands of sunglasses to be found at the opticians. The experience and special know-how of Rodenstock in spectacle lenses and frames make the brand the ideal choice for all wearers of sunglasses who value high quality products and for whom good vision is just as important as a good look.

FUNCTION

Even if sunglasses are often worn as fashion accessories and as an expression of personal style, the most important function of sunglasses is always to protect the eyes against too much sunlight. Good sunglasses prevent dazzling and protect the eye lens and retina against damage through too much light intensity and UV radiation
There are various aspects that play an important role for the optimum functionality of sunglasses.

Comfort
Spectacle frames are ergonomically perfect when they are imperceptible to the wearer: when there are no pressure points on the nose or temples, and when you don't have to constantly readjust the frame for a perfect fit. Not only the shape and design of the frame count, but also the choice of components they should be as light as possible, but also provide the degree of elasticity required of the frame.

UV protection
Most of the broad spectrum of rays that the sun radiates to the earth is harmless and even pleasant However, UV radiation, which is also included in the spectrum of sunlight, can be detrimental to the eyes above a certain intensity. This results in conjunctivitis, turbidity of the cornea and eye lens, and damage to the retina. This is why
all sunglasses from Rodenstock provide complete protection against UV radiation and shortwave light to a wavelength of 400 nm.

Glare protection

By filtering out specific colour ranges of the incidental light you reduce glare to a greater or lesser extent depending on the colour and tinting of the lenses. The percentage (eg. 85%) behind the colour designation of a Rodenstock sunglasses lens indicates the amount of incidental light that does not reach the eye.

Contrast enhancement
Under clear blue skies the so-called diffuse sky radiation, it's particular, has a very high concentration of blue stray light this superimposes the other colours and reduces their contrast effect for our vision. Contract enhancing sunglasses filter this blue stray light to a great extent from the received visual image and thus provide a much sharper visual impression At the same time the colours retain their natural look.

Traffic suitability
All sun protection lenses, which are used in our sunglasses, fulfil the requirements of the CE Directive 89/686/EWG and the European Norm EN 1836: 2004 for suitability in traffic. This means that any of our sunglasses may be worn during the day unconditionally while driving a vehicle in public traffic. This applies also to our fashionable progressive colour shades.

Lenses

Filter categories
Each protective sunglass is designed for specific light conditions. The identification is found on the side behind the CE symbol. The table describes the characteristics of the individual filter categories.
The range of lenses for Rodenstock sunglasses includes three different lens types that above all have one thing in common: their high quality. In detail this means cornplete protection against UV radiation up to 400 nm, high quality imaging, optical clarity and distortion free vision meeting all requirements specified in standards for the recognition of traffic signal lights in daylight (according to DIN EN ISO}, together with low weight. Rodenstock sunglasses thus always provide the highest standards in wearer comfort and visual functionality.

SunProtect
SunProtect lenses ale prime examples for the high comfort that Rodenstock sunglasses always offer: UV protection up to 400 nm and perfect optical quality, as well as low weight for high wearer comfort
SunProtect lenses are available both in dark tints and in a version with a light mirror coating and a rear surface AR coating (Silver Moon).

ColorMatic
Phototropic (self-colouring) lenses such as the Rodenstock ColorMatic match their variable tinting automatically to the changing light conditions. The strong er the sunlight, the darker the lenses. This eliminates tiresome changing of spectacles whenever the light conditions change. These lenses are available in mineral (brown 30-75 %), and Perfalit ColorMatic Extra grey with a hardness coating

SunContrast
SunContrast lenses provide enhanced contrast through the absorption of blue stray light. Colours and contrast appear more pronounced, especially under diffuse light conditions as found in the mountains or at the sea. SunConbast is available in brown 85 %, amber 65 %, green 85 % and drive 85 %.

ColorMatic Contrast
The functional Rodenstock lens which combines enhanced contrast with photochromic features The lens tint changes from 40 % orange to up to 85 % brown. The lens has a hard coating.

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