In an optical coupling arrangement, which component is closest to the television camera tube?

In an optical coupling arrangement, the component that is closest to the television camera tube is the camera lens. The camera lens is specifically designed to focus the light transmitted through the objective lens and other optical elements onto the sensor of the television camera tube. Its primary function is to gather and direct the light into the camera, ensuring that the images captured are clear and well-defined.

The camera lens plays a crucial role in image quality, as it determines how well the light is focused and the extent of any distortion that might occur during the photonic transmission. It is positioned right before the sensor within the camera assembly, making it integral to the overall imaging process.

In contrast, other components like the objective lens are positioned before the camera lens and serve to capture the initial light from the subject, while beam splitters and mirrors may be involved in redirecting light but are not located closest to the camera sensor itself.