{"id":13991,"date":"2023-09-04T01:18:05","date_gmt":"2023-09-04T01:18:05","guid":{"rendered":"https:\/\/staging.rayzeek.com\/?p=13991"},"modified":"2023-12-26T08:42:42","modified_gmt":"2023-12-26T08:42:42","slug":"what-is-beam-spread","status":"publish","type":"post","link":"https:\/\/staging.rayzeek.com\/zh_hk\/%e8%a9%9e%e5%bd%99%e8%a1%a8\/what-is-beam-spread\/","title":{"rendered":"What is Beam Spread"},"content":{"rendered":"

What is Beam Spread<\/h2>\n\n\n

Beam spread is the dispersion or diffusion of light emitted from a flashlight or light fixture. It is a measurement of the angle at which the light beam spreads out from the center, determining the coverage area and intensity of the light. The beam angle is a specific value that indicates the angle of beam spread from the center of the beam. It is measured by drawing an imaginary line from the center of the light source to the point where the light intensity at the outer edges of the beam drops to 50 percent of the maximum. A narrow beam angle is characteristic of a spotlight, providing focused and concentrated illumination for smaller areas. In contrast, a wider beam angle is typical of a floodlight, dispersing light over a larger area.<\/p>\n\n\n\n

Additionally, the field angle is a measurement of the angle from the centerline of the beam to a point where the light intensity is significantly reduced, usually around 10 percent of the maximum. This angle, also known as the cut-off angle, indicates the effective lighting area of a light bulb or fixture design.<\/p>\n

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Beam spread values are typically expressed in terms of angles rather than distances. Lighting designers utilize these angles to determine the placement of fixtures in a space, considering factors such as desired light intensity and color temperature. By analyzing the beam and field angle data, designers can achieve optimal coverage and distribution of light in a given area.<\/p>\n

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