Imaging Source - DBK21 USB Color CCD Camera

• USB Bayer camera
• 1/4" Sony CCD, progressive scan
• 640 x 480 pixel
• Up to 60 images/s
• USB 2.0

General behaviour:
Video formats @ Frame rate 640 x 480 UYVY @ 30, 15, 7.5, 3.75 fps
640 x 480 BY8 @ 60, 30, 15, 7.5, 3.75 fps
Sensitivity 0.5 lx at 1/30s, gain 20 dB
Dynamic range ADC: 10 bit, output: 8 bit
SNR ADC: 9 bit at 25 °C, gain 0 dB

Interface (optical):
Sensor specification ICX098BQ Download [671.36 KB, PDF]
Type progressive scan
Format 1/4 "
Resolution H: 640, V: 480
Pixel size H: 5.6 'm, V: 5.6 'm
Lens mount C/CS mount

Interface (electrical):
Supply voltage 4.5 to 5.5 VDC
Current consumption approx 500 mA at 5 VDC

Interface (mechanical):
Dimensions H: 50.6 mm, W: 50.6 mm, L: 50 mm
Mass 265 g

Adjustments (man):
Shutter 1/10000 to 30 s
Gain 0 to 36 dB
Offset 0 to 511

Adjustments (auto):
Shutter 1/10000 to 30 s
Gain 0 to 36 dB
Offset 0 to 511

Environmental:
Max. temperature (operation) -5 °C to 45 °C
Max. temperature (storage) -20 °C to 60 °C
Max. humidity (operation) 80 % non-condensing
Max. humidity (storage) 95 % non-condensing

Cleaning CCD Chip in DMK, DBK, and DFK Camera Methods:

• Compressed air from air blower - Compressed air is usually sufficient to remove most foreign bodies from the surface of the CCD chip. We recommend using an air-blower, such as from Edmund Optics, and not compressed air from an aerosol. Compressed air from an aerosol may contain other chemicals (propellant, water, oil etc.) which could damage the surface of the CCD. 

• Hama Lenspen MiniPro II - A company called Hama manufactures a product, which is ideally suited to the task: Lenspen MiniPro II. It is available online and from most well-stocked photography stores. One side of the pen has a brush on it, while the other, a small cleaning surface. The later is suited to efficiently removing dirt and fingerprints.

• Microfiber cleaning cloth - Although a microfiber cleaning cloth is a very viable option, it can be tricky to get the cloth onto the surface of the CCD chip through the camera's mount opening. A cotton swab (UK: Q-Tip) can help here.

• 90% pure alcohol - This can be purchased from most chemists. Never use Isopropanol, as it draws moisture from the air, which results in streaks on the surface of the CCD.

• Alcohol substitute - Instead of pure alcohol, Methanol or a liquid called Eclipse can be used (Eclipse is essentially Methanol). However, we do not recommend this approach, as Methanol is highly poisonous.

• Combination of all the above - Of course, all approaches can be combined! Do not worry about touching the glass in front of the CCD chip. It is pretty robust. Only by rubbing glass, sand or diamond on the surface can it be scratched.