For the tool used by artists to trace over pictures, seelight table.
Alightbox is most commonly atranslucent surface illuminated from behind, used for situations where a shape laid upon the surface needs to be seen with high contrast.[1] A lightbox is also a blocked-off area of an overhanging roof, as over an extended eve, added to allow light to pass through.
Several varieties exist, depending on their purpose:
Various backlit viewing devices:
A container with severallightbulbs and a pane offrosted glass on the top. It is used by photography professionals viewingtransparent films, such asslides.[2] This device was originally used to sortphotographic plates with ease. When laid flat, it may be called alight table. Generally, a lightbox uses light similar todaylight (5,000–6,000kelvins (K)) and has uniform light strength on the glass pane.[3]
In the form of vertical panels, they can also be found mounted on the walls of hospitals and medical offices to reviewX-ray images (X-ray illuminator).[4]
In the science field, lightboxes are often used for looking at bacterial growth and allow better visualization forPCR plates.[citation needed]
A lighted display panel used for advertising purposes.[5] The panel can be illuminated byfluorescent light bulbs orLED lighting strips. The efficiency of light boxes improved dramatically after the introduction of LED technology. The user inserts a graphic, which can be changed easily. Some light boxes are designed especially for outdoor purposes so they are more weatherproof.[citation needed]
The fabric reflectors that attach to studio lighting via a connector to create soft lighting by diffusing the strobe flash are called "light boxes".[6] They generally come in various rectangle or octagon shapes. Interior reflectors can be white, silver or gold to alter the temperature of light. Baffling inserts are also available.
A variation of this is a box, with one open end, made of diffusing material, to allow the photographing of a sample object with no shadows. It is also calledlight tent orphoto cube.[7]
A folder used onstock photography to allow a user to organize digital photos. Photos can be assigned to a viewable lightbox folder by subject, for later convenience, or used to compile unrelated photos for a specific project layout. Lightboxes also allow graphic designers to show clients options for a project in one simple uncluttered folder.[8]
The card-reader near the door in a hotel room, used as the main electric switch[citation needed]
A blocked-off area of an overhanging roof, as over an extended eve, which allows light to pass through.
