field lens: meaning, definition, pronunciation and examples

Not exactly. In many systems (like telescopes), the field lens is a specific lens within or near the eyepiece assembly that helps flatten the image field. The objective lens is the primary light-gathering lens at the front of the instrument. They are distinct components.

Generally, no. While the principle exists in camera lens design, the term is highly specific to instruments like telescopes, microscopes, and certain projectors. In photography, terms like 'front element' or 'wide-angle group' are more common.

It is crucial for anyone involved in the repair, design, or advanced use of optical instruments. Misidentifying a field lens could lead to incorrect assembly or diagnosis of optical problems.

Its primary role is not magnification, but field collection and correction. It gathers light and often helps correct optical aberrations (like curvature of field). The main magnification is provided by other lenses in the system, like the eyepiece.

A lens or combination of lenses in an optical instrument (like a telescope or microscope) that is closest to the object or scene being viewed. Its primary function is to collect light from a wide area to create an image that is then magnified by other lenses.

Field lens is usually technical / scientific in register.

Field lens: in British English it is pronounced /ˈfiːld ˌlɛnz/, and in American English it is pronounced /ˈfild ˌlɛnz/. Tap the audio buttons above to hear it.