1. Overview
  2. Glossary
  3. FAQ
  4. Ask us a Question
  5. Reference Resources

 

 

Glossary of Terms

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

I

Identification sign: A sign that provides the name of the business displaying the sign.
Illuminance: The amount of light falling on a surface expressed in lumens.
Illuminated awning: An awning sign that is lit from underneath the awning. The light shines through the awning fabric, illuminating whatever text or graphics are on it and providing effective nighttime readability. (Also called back lit awning.  See also awning sign and canopy sign.)
Illuminated sign: A sign where the sign face is illuminated. (Also called backlit sign. See also internally illuminated sign and exterior illuminated sign.)
Incandescent lamp: A lamp that contains a wire filament (typically made of tungsten) that produces visible light when heated by an electric current to the point of glowing.
Informational sign: A sign intended to provide information about the occupants or the use of a building or premises. Typically smaller in size, examples of informational signs include parking signs, restroom signs and entrance and exit signs.
Incise: To decorate a surface by carving or cutting into it using sharpened tools of varying size and shapes.
Inert gas: A gas that does not react chemically with other substances coming in contact with it. Inert gases include neon, argon, helium, krypton and xenon and are used in various lamps to illuminate signs.
Inflatable sign: A sign made of flexible material or fabric that will take on a three-dimensional shape when  filled with a sufficient volume of air. Commonly used as a temporary sign for special events or promotions.
Initial lumens: The lumen output of a new lamp as measured after it has been powered on for a standard length of time.
Ink: Pigmented liquid used for printing, writing and drawing. Inks are either water-based, solvent-based or Eco solvent based depending on the application.
Ink receptive: Refers to any material that will absorb ink and bond with it.
Inscribe: To write, print, incise or stamp letters and words onto or into a given surface.
Insert: An uninstalled sign panel with no lettering or graphics applied. (Also called a blank.)
Intensity: The amount of light (measured in lumens) put out by a lamp in relation to the distance at which it is viewed. The greater the output and the closer the viewing point, the greater the perceived intensity.
Interior sign: Any sign located within a building or structure.
Internally illuminated sign: A sign that is illuminated by a light source that is contained within the sign structure or housing. (See also backlit sign and exterior illuminated sign.)
ISA (International Symbol of Access): Also so known as the (International) Wheelchair Symbol, consists of a blue square overlaid in white with a stylized image of a person using a wheelchair. Signs with this symbol indicate areas where access has been improved, particularly for wheelchair users.  This symbol is also used to designate areas reserved for those with disability or other mobility issues.
Italic: A font style characterized by a distinct slant in the letters and numbers.