Optoelectronics

Highly efficient fibre optic channel plates

30th July 2021
Alex Lynn

Optical Surfaces has reported how it is machining and polishing high precision Fibre Optic Channel Plates (FOCP) for an X-ray shielding application. Fibre Optic Channel Plates are widely used as optical devices to replace optical lenses because they require no focusing distance making them a suited component when creating a compact optical device.

Comprising a bundle of micron-sized optical fibres - FOCP are used as a lens to transmit light or an image with extremely high efficiency and low distortion.

In each single fibre of a FOCP the light is transmitted by total internal reflection that occurs at the boundary between the core glass and the cladding glass due to the difference in their refractive index.

Fibre Optic Channel plates are widely used to couple light to solid state imaging devices such as CMOS and CCD image sensors. Used as the light receiving surface of an X-ray imaging device, the FOCP processed by Optical Surfaces is a key component preventing the image sensor in the camera from deteriorating due to exposure to X-rays.

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