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Shad-o-Box Product Family Datasheet0 pages
نسخه متنی
"Shad-o-Box 1024 X-Ray Camera nn
dimensional photodiode array containing 1024 by 1024 pixels on 48 m centers. A Gd2O2S scintillator screen, placed in direct contact with the photodiode array, converts incident x-ray photons to light, which in turn is detected by the photodiodes. A carbon-fiber window shields against ambient light and protects the sensitive electronics from accidental damage.The analog signal from the photodiode sensor is digitized to 12-bit (or optionally 14-bit) resolution in two parallel A/D channels, and then interleaved for maximum transmission speed across a high-speed parallel digital interface. The interface consists of a 68-
pin mini-D (SCSI-3) receptacle and uses the LVDS (EIA-
644) signaling standard for low power consumption and transmission lengths up to 30m. Pixel clock, line enable and frame enable signals are available at the connector to facilitate acquiring the image data with a standard digital frame grabber. An RS-422 option is also available.The standard version of the Shad-o-Box 1024 camera delivers 4000:1 dynamic range (defined as the maximum signal divided by the read noise) at a maximum frame rate of 2.7 frames per second. A special high-gain version doubles the sensitivity of the analog front end, at the expense of a slight increase in noise and image non-uniformity. All models operate from a standard +6.5V desktop power supply and consume less than six Watts of power. nn
DATASHEET
nnOverview
nnThe Shad-o-Box 1024 x-ray camera is a complete detection system for high-resolution radiation imaging. The heart of the Shad-o-Box camera is a two-dimensional photodiode array containing 1024 by 1024 pixels on 48 m centers. A Gd2O2S scintillator screen, placed in direct contact with the photodiode array, converts incident x-ray photons to light, which in turn is detected by the photodiodes. A carbon-fiber window shields against ambient light and protects the sensitive electronics from accidental damage.The analog signal from the photodiode sensor is digitized to 12-bit (or optionally 14-bit) resolution in two parallel A/D channels, and then interleaved for maximum transmission speed across a high-speed parallel digital interface. The interface consists of a 68-
pin mini-D (SCSI-3) receptacle and uses the LVDS (EIA-
644) signaling standard for low power consumption and transmission lengths up to 30m. Pixel clock, line enable and frame enable signals are available at the connector to facilitate acquiring the image data with a standard digital frame grabber. An RS-422 option is also available.The standard version of the Shad-o-Box 1024 camera delivers 4000:1 dynamic range (defined as the maximum signal divided by the read noise) at a maximum frame rate of 2.7 frames per second. A special high-gain version doubles the sensitivity of the analog front end, at the expense of a slight increase in noise and image non-uniformity. All models operate from a standard +6.5V desktop power supply and consume less than six Watts of power. nn
Key Features
nnՕ 50 mm (2) square active areaԕ Over one million pixels
10 lp/mm (48 յm) resolution
12 or 14-bit digital video output
Օ Energy range from 10 to 160 kV
Small, convenient form factor
Օ Standard frame grabber interface
Ready-to-run software and drivers
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