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In lighting design, backlighting is the process of illuminating the subject from the back. In other words, the lighting instrument and the viewer face each other, with the subject in between. This creates a glowing effect on the edges of the subject, [1] while other areas are darker. The backlight can be a natural or artificial source of light.
18 parallel CCFLs as backlight for an LCD TV LCD with edge-lit CCFL backlight For several years (until about 2010), the preferred backlight for matrix-addressed large LCD panels such as in monitors and TVs was based on a cold-cathode fluorescent lamp (CCFL) by using two CCFLs at opposite edges of the LCD or by an array of CCFLs behind the LCD ...
The key light, as the name suggests, shines directly upon the subject and serves as its principal illuminator; more than anything else, the strength, color and angle of the key determines the shot's overall lighting design. In indoor shots, the key is commonly a specialized lamp, or a camera's flash.
A typical four-point lighting setup. A background light is used to illuminate the background area of a set.The background light will also provide separation between the subject and the background. [1]
Backlight is a form of illumination used in liquid crystal displays (LCDs). Backlight may also refer to: Backlight, a 2010 Portuguese-American mystery film; Backlight, a 2007 Dutch documentary television program; Backlighting (lighting design), the process of illuminating a subject from the back
Alternative design is the "constant current" design where each parallel circuit of several SMDs includes a small integrated circuit to provide a fixed current to that group of LEDs, within a wide range of applied voltages. This allows the strip to operate at the same power level and brightness along its entire length, or with some variation in ...
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To generate white light best suited as an LCD backlight, parts of the light of a blue-emitting LED are transformed by quantum dots into small-bandwidth green and red light such that the combined white light allows a nearly ideal color gamut to be generated by the RGB color filters of the LCD panel. The quantum dots may be in a separate layer as ...