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
LOMO / ZENITH
1970-1990
Folding condenser
ZEISS
1950-1970
Hand microtome with razor blade
UNKNOWN
1850-1900
Cell counter
CLAY ADAMS COMPANY
1960-1980
info@stichtinghistorischemicroscopie.nl
Visseringlaan 25
2288 ER Rijswijk
The Netherlands
RSIN: 804217361
KVK: 41182753
IBAN: NL53INGB0007728414
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