EQUIPMENT COMPRISING THE SYSTEM
- Remotely Controlled Optical Microscope
Zoom Microscope with stepper motor control of zoom and
focus. An Auxiliary Lens and Tube Lens are selected from the
list below to meet the application requirements for field of
view.
| Auxiliary |
Diagonal
Field-of-View |
Working |
| Lens |
1x
Tube Lens |
2x
Tube Lens |
Distance |
| 0.25x |
55mm
to 4.6mm |
27.6mm
to 2.28mm |
334mm |
| 0.50x |
27mm
to 2.3mm |
13.8mm
to 1.14mm |
160mm |
| 0.75x |
18mm
to 1.5mm |
9.2mm
to 0.76mm |
107mm |
| -
no lens - |
13mm
to 1.1mm |
6.9mm
to 0.57mm |
86mm |
| 1.50x |
9mm
to 0.8mm |
4.6mm
to 0.38mm |
50mm |
| 2.00x |
7mm
to 0.6mm |
3.5mm
to 0.29mm |
37mm |
- Illumination Options
Either a Coaxial Illumination System or a 15° Vertical Exit
Ring-light Illuminator
- Cold Light Illumination Source
150-Watt fiber-optic light source with manual dimmer,
3200°K color temperature.
- Motorized Microscope Stage
Stepper motor controlled stage ---- 150mm x 150mm of
travel. Specifications - 12.5µm positioning resolution,
<15µm position repeatability error, <25µm absolute
positional error over the full travel range. Customized top
plate.
- Personal Computer & Monitor
Pentium III - 750MHz, 64MB Memory, 10.0GB Hard Drive,
Microsoft Windows 98
17" Color Monitor
- High Resolution Video Imaging System
Color Camera with S-Video output, -- 1/2" Image
Sensor, 768 (H) x 494 (V) pixels, 8.4µm (H) x 9.8µm (V)
cell size , 450 lines of horizontal resolution.
- Video Adapter Card
Video Frame Grabber, S-Video input.
- Adapter Electronics
Digital to analog conversion hardware for control of
four Stepper motors. One standard 9 wire shielded cable
interconnects the computer to the microscope frame.
- Operations Program
Application-specific programming provides the capability
to control focus, zoom and stage movement from the personal
computer. In addition, program functions are available to
provide the capability for moving the stage in response to a
series of x,y coordinates provided from a file or from a
stored routing description. Travel speed is selectable from
a range of 10 seconds/mm to 10mm/second, or the stage can be
stepped in field-of-view increments with dwell times from 1
second to infinity.
An on/off selectable cross-hair is provided to facilitate
feature centering.
Sample rotation compensation is provided through a
special-purpose program function. The operator selects a
predefined feature on the sample, sets the datum, moves the
stage to a second predefined feature, and initiates a
programming operation, which establishes rotational
correction based on the variation from known. All future
movements incorporate the correction automatically.
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