objective lens
objective lens — noun
1. the piece of glass or system of glass pieces at the lower end of a microscope, o
the piece of glass or system of glass pieces at the lower end of a microscope, or at the front end of a telescope, that collects light from the thing being looked at and focuses it to form a magnified picture inside the instrument
Dr. Okafor wiped the microscope's objective lens carefully before placing the slide underneath.
collocation: objective lens of [instrument]
The telescope's objective lens was covered with dust, so Lin cleaned it with a soft brush.
passive: was covered with dust
Yuki adjusted the objective lens of the compound microscope until the onion cells came into sharp focus.
A larger objective lens on a telescope gathers more light and creates brighter images of distant stars.
The repair shop charged Carmen forty dollars to replace the broken objective lens on her microscope.
- object glass
older or historical term for the same part of a microscope or telescope
- front lens
informal term, especially for telescopes and cameras
- eyepiece
the lens at the opposite end of a microscope or telescope, closest to the viewer's eye
- ocular lens
technical term for the eyepiece, the lens the observer looks through
文法句型
the objective lens of [instrument]
用法筆記
Frequently used with a possessive or of-phrase (the microscope's objective lens / the objective lens of the telescope). Distinguished from the eyepiece (ocular lens), which is the lens closest to the eye.