Sunglasses

Sunglasses

Sunglasses are dark tinted eyeglasses. They are often worn to protect the eyes from sunlight or as a fashion accessory. Some of the most popular brands include:

• Ray-ban
• Oakley
• Prada
• Polaroid
• Gucci
• Emporio Armani Eyewear
• DKNY
• Emblem Eyewear
• Arnette Eyewear
• Panto Glasses

Common frame styles include

• Aviators - Frames with a double bar nose bridge and often teardrop shaped lenses.
• Wayfarers - Thicker plastic frames with metal dots at the top corner of the glasses.
• Wraparound glasses - Where the lenses are curved around the face, offering greater protection and a wider field of vision.
• Clip-on sunglasses - Frames akin to Pince-nez made to clip onto the front of a pair of prescription eyeglasses.
• Fit over glasses - Designed to be donned over prescription glasses.

Common lens tints include

• grey - A neutral color
• brown - A color that gives better contrast and a "warmer" hue
• green - Ideal for golf and certain other sports
• yellow - good for overcast conditions, computers or night driving.
• Blue- In terms of fashion.

Tint intensities. The darkness of a lens tint is usually categorized in percentage or a category of four system.

• Category one tints are the lightest and mainly for fashion usage. Category one tints are usually 10 or 20% tinted.

• Category two tints are great for photosensitivity caused by indoor florescent lighting and correspond with 30% to 50% darkness

• Category three tints are standard sunglass level 60% to 80% tint.

• Category four tints are for the brightest of sunny days. These tints are usually 75% to 90%.

• Gradient lenses have a darker tint at the top and goes lighter further down the lenses.

Other words for sunglasses include:

• Sunnies - most common in British and Australian English.

• dark glasses.

• Smoked spectacles - Used especially for the nearly opaque glasses of the blind.

• Solar shields - Sunglasses with overly large lenses.

• Cooling glasses - In Indian English.

• Glares - In Indian English.

• Shades

• Stunna shades - Sunglasses with large lenses. Used in hip-hop circles.

• Glecks - A term for both eyeglasses and sunglasses in Scottish English.

• Sun cheaters - In American English.

Sunglasses Media

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  Wearing sunglasses under direct sunlight: Large lenses offer good protection, but broad temple arms are also needed against "stray light" from the sides.

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  Inuit snow goggles function by reducing exposure to sunlight, not by reducing its intensity

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  Antoine Lavoisier conducting an experiment related to combustion generated by amplified sun light

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  Effect of pair of polarized filters

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  Broad temple arms protect against "stray light" entering from the sides.

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  These Stanley Vexis safety sunglasses have a scratch resistant coating, block 99.9% UV, and meet ANSI Z87.1 and CSA Z94.3 standards.

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  Protecting his eyes from exposure due to exophthalmos, sunglasses have become the trademark of German singer Heino.

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  Artist Elize Ryd wearing sunglasses as part of her costume for the Tuska Open Air Metal Festival

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  As of 2009, the European CE mark indicates that the glasses actually offer a safe level of Sun protection.

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  Hunter S. Thompson was known for wearing yellow-tinted driving glasses.