PLPQ3-5MM-FF

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• PLPQ3-5MM-FF Application Field and Working Principle

  Light pipes, such as PLPQ3-5MM-FF, are extremely widely used in the industrial, commercial and domestic sectors due to their ability to transmit light through a curved or angled path without effecting the wavefront of the light. This has a range of applications including but not limited to medical equipment, automotive, consumer electronics, recreational sports and home theatre equipment. PLPQ3-5MM-FF are specifically designed to deliver light over extended distances while maintaining a consistent light output and are suitable for applications where optical performance is critical.

  The construction of a PLPQ3-5MM-FF light pipe begins with the selection of an optically clear material, often acrylic or polycarbonate, for the body of the pipe. Next, the material is cut to the specific length required for the application. The ends of the pipe are then formed and polished to prepare the surfaces for optical treatment. Finally, a coating of an optically active material is applied to the inside of the pipe. This coating serves to reduce the scattering of light caused by imperfections in the surface of the material. The application of the coating also allows the light pipe to faithfully transmit light over a wide range of angles.

  The working principle of the PLPQ3-5MM-FF light pipe is a combination of total internal reflection and Fresnel reflections. Total internal reflection is a phenomenon that occurs when light from an external source enters the light pipe at an angle greater than the ‘critical angle’ of the pipe’s material. In such a case, the light will continuously reflect off the inner walls of the pipe with no measurable loss of intensity, until it exits from one of the ends. Fresnel reflections occur when light strikes the end of the pipe at a shallow angle. In such a case, a portion of the light will be immediately refracted at the interface between the pipe material and the medium that the light is entering into, such as air or a vacuum.

  The combination of total internal reflection and Fresnel reflections allow the PLPQ3-5MM-FF light pipe to deliver bright light over a wide range of angles and distance, while maintaining excellent optical performance. This makes the PLPQ3-5MM-FF light pipe ideal for a wide range of industrial, commercial, and domestic applications.

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