Leitz Heine Darkfield, Phase Contrast, Brightfield Microscope Condenser

Description: This is a rare Heine condenser made by Leitz. It has a numeral aperture of 0.25 to 0.70 and features a vertical adjustment which can be used to provide various types of illumination including brightfield, phase contrast and darkfield. The second, third and fourth pictures have information about the condenser from the Leitz booklet "Phase Contrast Equipment with the Heine Condenser". It can be found online. I received this information from an expert in the field at Dawson Microscope Company: That aperture range 0.25 to 0.70 is when the upper hemispherical lens has been removed. With the hemispherical lens installed on the condenser its range is 0.50 to 1.40. The aux. lens is intended for oil immersion. All of the dry Heine phase objectives were intended for use without the upper element, but the immersion objectives (fl 70, and the two oil 90's) require the thread-on element. There were also two (quite rare) water immersion Heine objectives that used the auxiliary element - the W50 and w80. The W22 could be used without. Hope this helps! The neat thing about the Heine is that it can be used with virtually any phase objective since the annular illumination ring is completely adjustable in numerical aperture and is also quite thin so it easily fits the width of any Zernike phase ring in an objective. This condenser does not come with the screw on hemispherical immersion lens. It comes with an adapter for a Leitz Ortholux I microscope.

Price: 599.95 USD

Location: Silver City, New Mexico

End Time: 2024-11-28T05:48:56.000Z

Shipping Cost: N/A USD