| 摘要 |
The illumination apparatus of microscopes comprises a collector lens for converting diversion light emanated from a light source into parallel luminous flux; a fly eye lens arranged near a backside focal position of the collector lens; and a vertical illuminator which projects two or more light source images formed by the fly eye lens on the incidence pupil of an objective lens. It is characterised in that it has a regulation means by which a diameter of luminous flux between the collector lens and the fly eye lens is changed according to selection of the objective lens.
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