Here are the main features and details of an X-ray viewer:

1. Light Source: Most modern X-ray viewers use LED lights, which offer bright and uniform illumination. Older models might use fluorescent lamps.
2. Adjustable Brightness: Many viewers allow for brightness adjustments, enabling optimal viewing for films of different densities.
3. Multiple Panels: X-ray viewers can have multiple panels or sections, each capable of holding a film. This allows healthcare professionals to compare different views or sequential images.
4. Film Grip: This is a mechanism, often a gravity or spring-loaded clamp, that holds the film in place on the viewer.
5. Slim Design: Modern X-ray viewers are often slim and can be wall-mounted, making them suitable for areas with limited space.
6. Uniform Illumination: It’s crucial for the light to be uniformly distributed across the viewing surface to avoid shadows or bright spots, which can obscure film details.
7. Color Temperature: The color temperature of the light should be chosen to enhance the contrast and details of the film.
8. Long Lifespan: Especially with LED light sources, X-ray viewers should have a long operational lifespan.
9. Cool Operation: LEDs have the advantage of emitting minimal heat, ensuring the viewer remains cool, which is essential for both safety and comfort.
10. Digital Integration: Some modern viewers can integrate with digital systems, allowing for overlays or side-by-side comparisons with digital images.
11. Energy Efficiency: LED viewers, in particular, are energy-efficient, leading to cost savings over time.