ORCA-Lightning Digital CMOS Camera C14120-20P Instruction manual_Ver.2.5
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4. OVERVIEW
C14120-20P is equipped with the new scientific image sensor, an advanced CMOS device that realizes
the multiple benefits of high resolution, high readout speed, and low noise all at once.
The setting and the control of the camera are operated by the application software.
5. FEATURES
(1) Pixel size and pixel number
The CMOS image sensor mounted on the camera has a smaller pixel size compared to the
conventional ORCA-Flash4.0 series (such as C13440-20CU), but since it has a large number of
pixels, it achieves about twice the field of view than the conventional.
Sensor specification
C14120-20P (H × V)
Other camera (H × V)
(example for C13440-20CU)
Cell size
5.5 µm × 5.5 µm
6.5 µm × 6.5 µm
Effective number of pixels
4608 × 2592
2048 × 2048
Effective area
25.344 mm × 14.256 mm
13.312 mm × 13.312 mm
(2) Cooling structure
Cooling of this equipment is done using a Peltier element. With a Peltier element, when current is
supplied, one surface is cooled, and the other surface is heated. CMOS image sensor is
positioned on the cooled side, and cooling is done by discharging the heat from the heated
surface.
(3) Protection circuit
This camera’s thermoelectric cooling device is protected by a thermal protection circuit. If the
internal
temperature of the camera becomes abnormally hot, the protection circuit operates to
inform the user by a buzzer alarm (beep tone) and switch the STATUS lamp in red while
simultaneously cutting the current supply to the Peltier element.
(4) Readout noise
The readout noise of the camera achieves a low noise performance or more than the
conventional cooled CCD image sensor.
In the camera, the pixel amplifier is optimized: it has high gain from optimizing the semiconductor
process, and the difference among pixel amplifiers is greatly minimized. In addition, there is
on-chip CDS (correlated double sampling) circuit, which plays an important role in achieving low
noise.
Summary of Contents for ORCA-Lighting C14120-20P
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