Zeiss Primovert - Objectives

ZEISS Description Primovert
14 415510-7244-001 12/2014
2.4 Objectives
The objectives are the optical heart of the microscope. The objectives may be labeled as follows:
LD Plan-ACHROMAT 40x/0.5 Ph 1 ∞/1.0
Where:
LD Long working distance
40x Objective magnification,
with a defined color ring on the
objective being assigned to each
magnification step (Carl Zeiss color code)
0.5 Numerical aperture
∞ Infinite mechanical tube length
1.0 Usable with cover glass thickness
D = 1.0 mm, similar data for other glass
cover thicknesses in millimeters
or
0 Usable without cover glass
− Usable with cover glass thickness D = 0 or
0.17 mm
Other labels:
Ph Phase contrast objective with green
inscription
The total visual magnification of the stand with tube / phototube is obtained by multiplying objective
magnification by eyepiece magnification, e.g., 40 x 10 = 400x.
Numerical aperture multiplied by 1000, e.g. 0.5 x 1000 = 500x, presents the maximum useful
magnification; there is no resolution for further details above that limit.
If glass cover slips are employed, objectives can also be used with other cover glass thicknesses.
Available objectives:
Objective Magnification NA Description Working
distance
(mm)
Order No. Field of
view
(mm)
Plan-Achromat 4x 0.10 HF 12 415500-1600-001 20
Plan-Achromat 4x 0.10 Ph0 12 415500-1619-000 20
Plan-Achromat 10x 0.25 Ph1 4.4 415500-1605-001 20
LD Plan-Achromat 20x 0.30 Ph1 4.6 415500-1614-000 20
LD Plan-Achromat 40x 0.50 Ph1 2.8 415500-1617-000 20
LD Plan-Achromat 20x 0.30 Ph2 4.6 415500-1618-000 20
LD Plan-Achromat 40x 0.50 Ph2 2.8 415500-1616-000 20
Fig. 2 Objective (mounting position)