Definitions for "Condenser Lens"
Loosely applied to any spotlight lens which condenses diverging rays into a beam, but more correctly to the short focus combination of two or more lenses in a jacket used for illuminating a slide or effect disc. Also used in some profile lanterns and followspots to produce a smoother light (especially for gobo work).
A lens mounted in or below the stage whose purpose is to focus or condense the light onto the specimen. Condenser lenses are not used on low-power (stereo) microscopes.
A positive lens of short focal length, usually used to direct light into a projector lens or the optical system of an instrument.