Lens

Lens may refer to:

Optics

Other radiation focus and forces

Places

Contact lens

A contact lens, or simply contact, is a thin lens placed directly on the surface of the eye. Contact lenses are considered medical devices and can be worn to correct vision, or for cosmetic or therapeutic reasons. In 2004, it was estimated that 125 million people (2%) use contact lenses worldwide, including 28 to 38 million in the United States. In 2010, worldwide contact lens market was estimated at $6.1 billion, while the U.S. soft lens market was estimated at $2.1 billion. Multiple scientists estimated that the global market would reach $11.7 billion by 2015.As of 2010, the average age of contact lens wearers globally was 31 years old, and two thirds of wearers were female.

People choose to wear contact lenses for many reasons. Aesthetics and cosmetics are often motivating factors for people who would like to avoid wearing glasses or would like to change the appearance of their eyes. Other people wear contacts for functional or optical reasons. When compared with spectacles, contact lenses typically provide better peripheral vision, and do not collect moisture such as rain, snow, condensation, or perspiration(extreme weather); this makes them ideal for sports and other outdoor activities. Contact lens wearers can also wear sunglasses, goggles, or other eyewear of their choice without having to fit them with prescription lenses or worry about compatibility with glasses. Additionally, there are conditions such as keratoconus and aniseikonia that are typically corrected better by contacts than by glasses.

Frank Ocean

Christopher Francis "Frank" Ocean (born Christopher Edwin Breaux October 28, 1987), is an American singer, songwriter and rapper from New Orleans, Louisiana. Ocean embarked on his musical career as a ghostwriter for several prominent artists, including John Legend, Justin Bieber and Brandy. In 2010, he became a member of alternative hip hop collective OFWGKTA, also known as Odd Future. Ocean subsequently released his breakout mixtape, Nostalgia, Ultra, to critical acclaim in 2011. The singles, "Novacane" and "Swim Good", both achieved chart success. In 2012, Ocean finished in second place in BBC's Sound of 2012 poll.

His debut studio album, Channel Orange, was released in July 2012 to critical acclaim and was promoted with three charting singles: "Thinkin Bout You", "Pyramids" and "Sweet Life". That year, Ocean also became one of the first major African-American music artists to announce that he was on the LGBT spectrum. Ocean's music has been characterized by music writers as idiosyncratic in style.

No symbol

The no symbol (also known as a prohibition sign, no sign, circle-backslash symbol, nay, interdictory circle, or universal no) is a circle with a diagonal line through it (running from top left to bottom right), surrounding a pictogram used to indicate something is not permitted. The no symbol is generally colored red, but is sometimes another color, typically black.

The Unicode code point for the prohibition sign (also called the no symbol) is U+20E0;, Combining Enclosing Circle Backslash (   ⃠   ). It is a combining character, which means that it appears on top of the character before it, so putting d⃠ will show   d⃠.   (Note: This will appear only if the character exists in an available font.) It also appears in the Webdings and Wingdings 2 fonts.

There is also a prohibition sign emoji located at U+1F6AB NO ENTRY SIGN (🚫), which does not combine with anything.

According to the ISO standard (and also under a UK Statutory Instrument), the red area must take up at least 35% of the total area of the sign within the outer circumference of the "prohibition sign". So 35% of everything within the outer edge of the "no symbol" must be the symbol itself. Additionally, for printed signs under the UK rules, the width of a "no symbol" is set at 80% the height of the area it is printed to.