backlit

Backlit describes a subject that is illuminated from behind, relative to the viewer. This lighting arrangement places the light source at the rear of the scene or object, often creating a glow around the edges and increasing separation from the background. Backlighting can be used intentionally for mood, drama, or visual clarity, but it can also reduce detail in the illuminated subject if not balanced.

In photography and cinema, backlighting places light sources behind the subject. It frequently produces a rim light or halo and can render the subject as a silhouette if exposure favors the background. Photographers sometimes use fill light or adjust exposure to retain detail in the foreground. Backlighting is common during sunrise or sunset, when the sun acts as a strong backlight, or when separating subjects from bright backgrounds.

In display technology, backlight refers to the light source behind a translucent or transmissive layer, used to illuminate images on screens such as LCDs. Common backlight sources include LEDs and organic LEDs (OLEDs do not require a backlight). Backlighting methods include edge-lit, where LEDs light a light guide plate along the panel edges, and direct-lit or full-array, where LEDs are distributed behind the entire screen, sometimes with local dimming for contrast.

Backlit lighting is also used in signage and architectural features, providing even illumination from behind panels. Pros include improved brightness and readability; cons can include uneven lighting, glare, or lens flare in photography. Overall, backlighting describes a passive role of the light source relative to the subject, influencing mood, visibility, and depth depending on implementation.