Epson 250D - Manual (Page 7)

LEICA biological Microscope with professional lenses, recommended for the
longitudinal and sectional analysis of fibres and yarns.
- High quality and accuracy Microscope
- Phototube trinocular viewing body with Siedentopf
design, to adjust the interpupillary distance without
changing the focussing.
- Koehler illumination device for the phase contrast
and micro photographs (20W).
- Objective image viewing.
- Polarising filter (for a better sample viewing), blue
and green coloured filters.
- High precision focussing system.
- Slide movement device with micrometric
regulation.
- On screen magnifications: from 128X to 2000X.
- Highly accurate revolving lenses system.
LENSES IN USE OCULAR
MAGNIFICATION ON SCREEN
MAGNIFICATION ON SCREEN FIELD
OF VISION (mm)
4X 40X 128X 1.6
10X 100X 320X 0.65
20X 200X 640X 0.35
40X 400X 1280X 0.15
63X (optional) 630X 2016X 0.1
Note: by using the 0.50X additional lens between the microscope and the video-camera
(available as optional) the on screen magnification rate decreases by 50% and the field of
vision increases by 50%.
- The mentioned dimensions and final magnifications also depend on the hardware in use.
- The above mentioned magnifications and fields of vision have been calculated by using a 17” monitor with 1280X1024 resolution.
SYSTEM COMPOSITION
PROFESSIONAL VIDEO-CAMERA with 1/2’’ CCD;
compared to the 1/3’’ CCD, it has a much wider field of vision –
hence a wider surface of the sample is visualised – and a
quicker reaction to light variations. Complete with achromatic
C step connector with 1:1 lens, for the insertion on the
microscope, to give the maximum contrast, colour and planarity
quality.