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10x/0.22
Magnification and aperture. The aperture
(pick-up angle) influences resolution, field
depth, contrast and brightness. Objectives with
built-in iris diaphragm have an engraving
showing the maximum and minimum aperture,
e. g. 0.85 – 0.55.
n. b.:
Objectives with built-in iris diaphragm.
The knurled ring may only be used for adjusting
the diaphragm, not for screwing the objective in
or out.
Risk of damge!
OIL, W, IMM
Immersion objectives for oil, water, universal
(oil, glycerine, water, etc.).
PH
PH = phase contrast objective, with additional
indication of assigned light ring in condenser,
e. g. PH2.
BD
BD = brightfield/darkfield; objectives for incident
light microscopy with M 32 screw thread.
CORR
Correction mount for continuous adjustment to
coverslip/specimen slides or thickness of vessel
base.
P, POL
Strain-free objective for quantitative polarisa-
tion microscopy.
U-V-I
With special achromatic correction, i.e. parfocal
from the ultraviolet through the visual to the
near infrared range (from 340 nm to 1000 nm).
D (or A, B, C)
Pupil position of objective (important, e. g. for
IMC integrated modulation contrast).
Objective type (performance class):
C Plan
Achromatic objective with particularly good
price/performance ratio. Field performance
max. 20 mm.
N Plan
Achromatic objective with increased field per-
formance of at least 20 mm.
PL FLUOTAR
®
Semiapochromats with particularly good field
performance of at least 25 mm and chromatic
correction. Universal optics for all techniques.
PL APO
Plan apochromats with a field performance of
over 25 mm and maximum chromatic correction.
The best objectives in the Leica range.
HC
Harmonic Components.
X
Universally applicable, also backwards com-
patible with Delta optics (= predecessors of HC
optics).
L
Long working distance.
!