OPTICAL INSTRUMENT HAVING A VARIABLE OPTICAL FILTER

An optical instrument (10) for use in collecting light from an object (44), the optical instrument (10) having a post-objective waist (34) with a variab le optical filter (32) positioned approximately at the post-objective waist (34 ). The optical instrument (10) for collecting light from the object...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	YOUVAN, DOUGLAS C, YANG, MARY M
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	COLORIMETRY INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT MEASURING OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS RADIATION PYROMETRY TESTING
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Beschreibung
Zusammenfassung:	An optical instrument (10) for use in collecting light from an object (44), the optical instrument (10) having a post-objective waist (34) with a variab le optical filter (32) positioned approximately at the post-objective waist (34 ). The optical instrument (10) for collecting light from the object (44), comprising an objective lens (18) positioned to receive light from the objec t (44), an exit lens (24) positioned to focus the light at a focal position (26), and a variable optical filter (32) positioned between the objective le ns (18) and the focal position (26) approximately at a waist (34) of the light. The optical instrument (10) may be an epifluorescence microscope (12) for us e in observing an image formed from light from an object (44) under illuminati on by a light source (14). The variable optical filter (32) may be a circular variable interference filter or a tilting interference filter.