The
standard BA400 is equipped with the ergonomic friendly observation angle of
30° with the Siedentopf interpupillary adjustment system [55-75mm] to
accommodate the differences in users. Though standard at 30°, the user
has a choice of what kind of head, binocular, trinocular [20/80], and trinocular
[0/100], for the BA400, thus modularity from the beginning. Adding function
and comfort, the adjustable, high eyepoint eyepieces of the BA400 allow the
user to adjust for astigmatism [±5°] while aligning a reticule
without having to paste their eyes on the eyepieces.
Based upon the Colour Corrected Infinity Optical System [CCIS®], the BA400
incorporates the CCIS® Plan Achromat objectives in the overall combination
to produce those image requirements of clear, crisp, true colour, distortion
free, and high contrast with a field flatness of F.N. 22. Complementing the
CCIS® system, the standard equipped swing-out N.A. 0.9/0.13 Achromat Abbe
condenser is able to render homogeneous illumination for magnifications ranging
from 2X to 100X for both observation and photomicrography roles.
Supporting the BA400’s functions is the stand’s inverted “Y”
design for lateral stability and ruggedness combined with user-friendly located
sample manipulation controls for rapid and fatigue-free movements. Positioned
low for comfort, the focus mechanisms of the BA400 produce highly precise
movements of 1mm minimum increment within a 27mm stroke range. Located in
close proximity to the focus controls, the mechanical stage adjustment controls
can be found in either left or right-handed format to suit the user as they
move the sample throughout the 76 X 50mm movement. Furthermore, the stage
can be rotated for photomicrography applications.
Illuminating the entire system is the externally mounted 30W/6V true Koehler
illumination system that provides bright and uniform illumination for all
applications. Optionally available is the three-cassette reflective Epi-fluorescence
system to expand the BA400 into another realm. |
