távolifókusz

Távólifókusz is a Hungarian term that translates to "telefocus" or "remote focus" in English. It describes a technology or a state where the focal point of an optical system is at a significant distance from the lens or mirror itself. This is in contrast to systems where the focus is achieved close to the optical element.

The concept of távolifókusz is relevant in various optical applications. In astronomy, telescopes are designed to achieve távolifókusz, allowing them to gather light from very distant celestial objects. The objective lens or mirror collects light, and the focal point where the image is formed is located far behind it, enabling magnification of distant objects.

In photography, certain lenses, particularly telephoto lenses, are designed to achieve távolifókusz. These lenses allow photographers to capture subjects that are far away, creating images with a compressed perspective and a shallow depth of field. The design of these lenses involves complex arrangements of glass elements to bend light and converge it at a distant focal plane.

The principle of távolifókusz is also applied in scientific instruments such as microscopes, although the term itself is less commonly used in this context. However, the underlying optical principle of forming a focused image at a specific distance is fundamental to their operation. Understanding távolifókusz is crucial for designing and utilizing optical systems that deal with distant objects or require a specific working distance for imaging.