olemus
optikaseadme objektipoolne komponent
= the optical element that gathers light from the object being observed and focuses the light rays to produce a real image

ülevaateid
https://en.wikipedia.org/wiki/Objective_(optics)

näiteid
https://www.olympus-lifescience.com/en/discovery/the-anatomy-of-an-objective-lens/

https://duckduckgo.com/?q=objective+lens&t=h_&iar=images&iax=images&ia=images

kalasilmobjektiiv