Field Lens (Noun)
Meaning
The lens that is farthest from the eye in an optical device with more than one lens.
Classification
Nouns denoting man-made objects.
Examples
- The field lens in a pair of opera glasses serves to collect and converge light before it reaches the objective lens.
- In a telescope, the field lens is positioned near the ocular lens to increase the instrument's overall magnification power.
- The field lens of a microscope is typically larger than the condenser lens to ensure adequate illumination of the sample.
- In an optical train with multiple lenses, the field lens is usually positioned between the objective lens and the eye lens.
- The field lens in a spotting scope is designed to improve the viewing experience by providing a wider field of view and increased magnification.