Friday, October 04, 2013
Sharp Introduces iSHCCD II and iSHartina
Sharp announces a pair of CCDs with PAL and NTSC resolutions, with improved IR sensitivity. The company also registered tow trademarks "iSHCCD II" and "iSHartina". "iSHCCD II" is said to be an advanced CCD that drastically improves light efficiency by including near infrared light region in a basic structure of "iSHCCD". The "iSHartina" series is said to be a key device group of Sharp which realizes a next-generation sensing world.
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What does near infrared light stands for? Above ~1100 nm or just plain IR below that, visible to CCD/CMOS sensors?
ReplyDeleteIt's intrinsic silicon after all. It can only see IR shorter than 1100nm.
DeleteNot everyone has quite the same description and there is some overlap in the band terminilogy but this is typical:
ReplyDeleteNear infrared (NIR) - 700-1100 nm, essentially the response of silicon beyond the visible.
Short-wave infrared (SWIR) 900-2500 nm - from the shortwave response of InGaAs to the end of the atmospheric transmission window
Mid-wave infrared (MWIR) - 3-5 microns - the mid wave atmospheric transmission window
Long-wave infrared (LWIR) - 7-14 microns - from the start of the long-wave atmospheric window to the long-wave limit of most thermal cameras (for various reasons)
Very-long-wave infrared - 10 to 100 microns or so
After that is the terahertz band, which is just now becoming the focus of imaging systems. Used to be called the sub-millimeter wave band. Extends down to about 300 GHz.
Send me an e-mail and I can send you some charts. dave@alt-vision.com