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EM Series
- Features
- Body's
EMZ-zoom
EMT-turret
EMF-fixed
- Accessories
Eyepieces
& Micrometers
Auxiliary
lenses
- Holders
- Stands
Pole
Rigid
arm
Extended
work area
Universal
boom
Articulated
arm
- Accessories
- Illuminators
- Video
"C" mounts
- 35mm
accessories
RZ
Series
SKT
Series
BM
Series
BMK
Series
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A video
"C" mount is used to connect the CCD camera to the trinocular
tube of the EM Series stereo microscope. Since their introduction CCD
video imagers have continually decreased in size. CCD formats of 2/3”,
1/2" ,
1/3”,
and 1I4”
are common. The smaller the CCD imager the greater the video
magnification. Choosing the correct ”C” mount for your application
allows you to control the magnification on the video monitor. Meiji Techno
offers the following ”C" mounts for the EM Series microscopes
Note:
MA151 adapters are designed to be used in conjunction with the existing
trinocular tube with the exception of the MA1 51 / 5N, which replaces the
trinocular tube.
The
total magnification displayed on a video monitor is determined by the
following formula:
Total
Magnification = Objective Magnification X "C" mount
magnification X Video magnification
To
determine the objective magnification multiply the magnification number
found on the zoom control or turret setting times the magnification power
of any auxiliary lens being used. The video magnification is determined by
dividing the diagonal (mm) measurement of the video monitor by the
diagonal (mm) measurement of the CCD video camera chip. Tables of common
CCD chip dimensions and video monitor magnifications are listed below.
|
Common
CCD
Dimensions
| Chip Format |
Height |
width |
Diagonal |
| 1/3" |
3.6mm |
4.8mm |
6mm |
| 1/2" |
4.8mm |
6.4mm |
8mm |
| 2/3" |
6.6mm |
8.8mm |
11mm |
|
Common
Video Magnification
| |
9” |
12" |
13" |
19" |
20" |
27" |
| 1/3" |
38.1X |
50.8X |
55.0X |
80.4X |
84.7X |
114.3X |
| 1/2" |
28.6X |
38.1X |
41.3X |
60.3X |
63.5X |
85.7X |
| 2/3" |
20.8X |
27.7X |
30.0X |
43.9X |
46.2X |
62.3X |
Note: Top row
denotes monitor screen size measured diagonally. To convert from
inches to mm multiply by 25.4 |
The
actual size of a specimen can be determined by dividing the length of the
specimen measured on the monitor by the total magnification of the
monitor.
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