Assertion: microscope's stage | /r/MadeOf | lens
Facets:
Source sentences:
text: The first stage of the microscope optical train is the lamphouse, which contains the lamp and collector lens, and is responsible for establishing the primary illumination conditions for the microscope.
text: The first stage of the microscope optical train is the lamphouse, which contains the lamp and collector lens, and is responsible for establishing the primary illumination conditions for the microscope.