Year/Period |
1910-1920 |
Maker |
ZEISS |
Country |
Germany |
Signature |
Carl Zeiss / Jena [in logo] / 7423 // F / 1.8 mm n.A. 0.9 / D 0.17 |
Category |
Accessories microscopy |
Subcategory |
Optical components |
Optical 2 |
Achromatic |
Size of the box (h x w x d) |
sleeve: h 5.2 × ø 2.6 cm |
Size of the instrument (h x w x d) |
h 3.7 × ø 1.5 cm |
Donated by |
J.W. van Eijk, Zoetermeer, the Netherlands |
Inventory number |
SM 378 |
In a brass sleeve with screw cap. The sleeve is signed with the Zeiss logo, and an ‘F’.
The ‘F’ lens was manufactured in two versions, one without a correction collar (this one) and one with a correction collar (see SM 36).
The lens contains a fluorspar (calcium fluoride) lens, which makes it possible to correct the chromatic aberration of the lens better than in a normal achromatic lens. The result is that the lens is very sensitive to variations in the thickness of the cover glass. If it is not exactly the indicated 0.17 mm, the spherical aberration increases.
Microscope lamp
CAMBRIDGE SCIENTIFIC INSTRUMENTS COMPANY
ca. 1960
Microtome knives
JUNG
1900-1960
Microscope lamp
BLEEKER
ca. 1960
Prism rotator after Greenough
ZEISS
1900-1920
info@stichtinghistorischemicroscopie.nl
Visseringlaan 25
2288 ER Rijswijk
The Netherlands
RSIN: 804217361
KVK: 41182753
IBAN: NL53INGB0007728414
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