Hamamatsu ORCA-Flash4.0 LT3, Инструкция по эксплуатации

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ORCA-Flash4.0 LT3 Digital CMOS camera C11440-42U40 Instruction manual_Ver.1.1
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4. OVERVIEW
C11440-42U40 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 camera provides 4.0 megapixels resolution at 40 fps (frames/s) (and up to 25 000 fps by sub-
array readout) with rapid rolling, and the camera can achieve 0.9 electrons (median) 1.5 electrons
(rms) readout noise performance with standard scan. Moreover, the camera delivers high
sensitivity through its on-chip micro lens, high dynamic range that makes the camera suitable for
almost any scientific application from bright field imaging to low-light fluorescence imaging across
a wide spectral range. Various external trigger functions and timing output functions ensure proper
timing control with peripheral equipment to cover a wide range of applications.
The camera is the new scientific digital camera for life science microscopy, semiconductor
inspection, x-ray scintillator readout or industrial imaging.
5. FEATURES
(1) Readout noise
In the camera, the pixel amplifier is optimized: it has high gain from optimizing the
semiconductor process, and the difference among pixel amplifiers are greatly minimized.
In addition, there is on-chip CDS (correlated double sampling) circuit, which plays an
important role in achieving low noise. Moreover, the sensor features a split readout
scheme in which the top and bottom halves of the sensor are readout independently,
and the data of each horizontal line is read by 2 lines of column amplifier and A/D in the
top and the bottom in parallel and simultaneously. As a result, it achieves very fast
readout speed while keeping very good low-noise performance.
The camera has lower readout noise (0.9 electrons (median), 1.5 electrons (rms)) than
the conventional cooled CCD camera. Moreover, high-speed readout (30 fps with 2048
pixels × 2048 pixels) with very low readout noise, which was impossible, can now be
achieved.
In addition, the camera can achieve feature high-speed readout (40 fps with 2048 pixels
× 2048 pixels) with rapid rolling (readout noise 1.3 electrons (median), 1.9 electrons
(rms)).
(2) Cooling structure
In the camera, the CMOS image sensor is cooled down by a peltier element to suppress
the dark current. The camera has a special chamber structure to avoid the condensation.
(3) Pixel number and pixel size
The CMOS image sensor has 6.5 µm x 6.5 µm pixel sizes that is equivalent to
conventional CCD image sensor (2/3 inch, 1.3 megapixels). Also, the camera can
observe a wider field of view because the pixel number is about 3 times that of the
conventional CCD image sensor (2/3 inch, 1.3 megapixels)
(4) Readout method
The camera has a variety of readout modes. In addition to full resolution readout mode,
sub-array readout and binning readout are supported.