objective ***
objective lens
object lens
object glass

Its job is to enlarge the central part of an image obtained by the objective lens.

The objective lens of a microscope is the one at the bottom near the sample.

There is no objective lens for reading the data.

The objective lens or mirror collects light and brings it to focus creating an image.

It represents the distance at which the mirror or objective lens will cause light to converge on a single point.

After the electrons have left the sample they pass through the electromagnetic objective lens.

They have objective lenses that are approximately in line with the eyepieces.

So, with two objective lenses one can collect from every direction (solid angle ).

Reflected in the mirror is the image from the second objective lens (C).

He switched the objective lens, adjusted the focus, and off we went through several more slides.