Cut-off angle

Beam angle—what does that mean for lamps?

As Cut-off angle This is the angle at which a Beam of light spreads from its source to the surface. It describes how wide or concentrated the light is that emanates from a Lamp is produced.

A precise Cut-off angle has a significant impact on how a room or object is illuminated. Small angles produce a narrow, intense beam of light, while larger angles create a wide, even field of light.

How does the cut-off angle affect the light pattern?

• Narrow cut-off angles (e.g., approx. 30°) → much more concentrated Beam of light, Ideal for accent or spot lighting.
• Average cut-off angle (e.g., 40–50°) → A balanced mix of task lighting and ambient lighting.
• Wide cut-off angles (> 50°) → Wide beam angle, suitable for general and ambient lighting.

The narrower the cut-off angle, the greater the concentration of light—the light appears more intense over a smaller area. A wider cut-off angle distributes the Beam of light across a larger area, providing softer, more even lighting.

Why is the cut-off angle important for lamps?

• Spatial Lighting Design: Determines whether an area is evenly lit or specifically highlighted.
• Functional Lighting: Narrow angles for task lighting or accent lighting; wide angles for general lighting.
• Atmosphere & Comfort: The right cut-off angle shapes the lighting effect and the atmosphere of a room.

Real-world examples

• Spotlighting or accent lighting: Tight angles highlight details.
• Pendant lights above tables: Moderate angles provide pleasant, functional lighting.
• General lighting in the living room: Wide angles provide soft, even light throughout the room. A Ceiling light With a wide beam angle, it spreads the light beam broadly and is ideal as a central light source for general lighting.