ETC ICX658AKA

New Generation EXview HAD CCD Ultrahigh-Sensitivity Near Infrared Structure
Diagonal 6 mm (Type 1/3) 380K/440K-Effective Pixel CCD Image Sensors
ICX658AKA(NTSC), ICX658ALA(EIA)
ICX659AKA(PAL), ICX659ALA(CCIR)
Higher sensitivity is a never-ending theme, especially in image sensors for surveillance cameras.
Until now, to respond to these needs, Sony has provided a lineup of
EXview HAD CCD image sensors that displayed the industry's top
level of sensor sensitivity.
Sony has refined this EXview HAD CCD technology even further and
has succeeded in developing technologies that improve sensitivity,
especially sensitivity in the near infrared, significantly.
Now, Sony has developed the ICX658/659 image sensors that adopt
these leading edge Sony technologies as CCD image sensors for surveillance cameras, especially day/night cameras.
The ICX658AKA/659AKA and
ICX658ALA/659ALA (ICX658/659) are
diagonal 6 mm (Type 1/3) 380K/440Keffective pixel color and B/W CCD
image sensors developed for use in surveillance cameras.
The ICX658/659 image sensors were
developed with the particular goal of
increasing the near infrared sensitivity. It
is in day/night cameras that the ICX658/
659 can exhibit the true value of their high
near infrared sensitivity.
Furthermore, these image sensors are ap-
V
O
I
C
The performance of the CCD image sensors used in monitoring
applications is directly linked to
the performance of these crimeprevention cameras. Thus I found
this a rewarding development effort, since it may lead to a social
contribution in improved crime
prevention. I was just one of the
many people involved in this
project. I strongly urge that you
take advantage of the superb performance of the ICX658/659, which
incorporate the enthusiasm and
spirit of many of us here at Sony.
E
propriate for imaging with LED and other
near infrared light sources. See table 2 for
a comparison of imaging characteristics.
High Near Infrared Sensitivity
In the ICX658/659, Sony improved on the
conventional photodiode and developed
a structure with an even higher photoelectric conversion efficiency. This structure
succeeds in capturing even more of the
near infrared region light that escapes to
the substrate side in normal CCD image
sensors.
The result is that the existing EXview
HAD CCD technology, which had the
industry's top level of high sensitivity for
surveillance CCDs has been evolved even
further, and these devices feature increased sensitivity not only to visible light,
but in the near infrared region as well.
Compared to Sony’s conventional ICX258/
259 products, the ICX658/659 achieve
increased sensitivities of +10% in the visible range, and +4.5 dB in the near infrared (wavelength: 950 nm). (See photograph 1.)
We hope the ICX658/659, which can
make effective use of the near infrared
light invisible to the human eye, will make
new applications possible in the image
sensing field.
Figure 1 presents a comparison of the
■
Diagonal 6 mm (Type 1/3)
■
Near infrared sensitivity: +4.5 dB higher
than earlier Sony products at the 950
nm wavelength
■
Excellent compatibility with earlier
Sony products
*: EXview HAD CCD is a trademark of Sony Corporation.
ICX658/659 spectral sensitivity characteristics and figure 2 shows the spectral characteristics of the increases in sensitivity
provided by the ICX658/659 with the
ICX258/259.
Excellent Compatibility with
Conventional Sony Products
The ICX658/659 were designed to minimize as much as possible any difficulties
in their use as replacements for the
ICX258/259. In particular, the image size,
pixel counts, recommended drive timings,
pin configuration, and package are all
identical. (See table 1.)
We strongly recommend that customers
currently using the ICX258/259 look into
the performance of the new generation
EXview HAD CCD ICX658/659 image
sensors.
• Imaging conditions
LED illumination in
completely dark room
• LED specifications
Wavelength: 950 nm,
Half width: 25 nm
Illumination distance: 1 m
Conventional product (ICX258/259)
Newly-developed product (ICX658/659)
■ Photograph 1 Image Comparison
Sensitivity increase
(ICX658 sensitivity/ICX258 sensitivity)
1.0
Ye
Mg
ICX658
Relative sensitivity
0.8
Cy
0.6
G
ICX258
0.4
0.2
0.0
400
500
600
700
800
900
1000
1.8
1.6
1.4
1.2
1.0
400
500
600
■ Figure 1 Spectral Sensitivity Characteristics Comparison
ICX258AK/AL
Image size
Diagonal 6 mm
(Type 1/3)
TV format
NTSC/EIR
ICX658AKA/ALA
■ Table 2
ICX259AK/AL
Approx. 470K
(795H × 596V)
Number of effective
pixels
Approx. 380K
(768H × 494V)
Approx. 440K
(752H × 582V)
Number of active
pixels
Approx. 370K
(754H × 485V)
Approx. 420K
(738H × 575V)
Optical Horizontal
black
Vertical
Number of dummy
bits
Horizontal drive
frequency
Package
Front: 3 pixels,
rear: 40 pixels
Front: 12 pixels,
rear: 2 pixels
Horizontal: 22
Vertical: 1
(Even fields only)
14.3182 MHz
16-pin DIP (Plastic)
Improvement
1100 mV
1200 mV
At a wavelength
of 950 nm
+4.5 dB
1000 mV
1000 mV
–115 dB
–115 dB
ICX258AL
ICX658ALA
Improvement
Sensitivity
(F8)
1000 mV
1100 mV
At a wavelength
of 950 nm
+4.5 dB
Saturation
signal
1000 mV
1000 mV
Smear (F8)
–115 dB
–115 dB
14.1875 MHz
+0.8 dB
Equivalent to
above
Equivalent to
above
B/W Products
Item
6.50 µm (H) × 6.25 µm (V)
Imaging Characteristics
Comparison
ICX658AKA
Saturation
signal
Smear
(F5.6)
Approx. 410K
(811H × 508V)
6.35 µm (H) × 7.40 µm (V)
1000
ICX258AK
Sensitivity
(F5.6)
Interline transfer
Unit cell size
900
Color Products
PAL/CCIR
Total number of
pixels
6.00 mm (H) × 4.96 mm (V)
ICX659AKA/ALA
Item
Transfer method
Chip size
800
■ Figure 2 Spectral Analysis of the Increased Sensitivity
■ Table 1 Device Structure Comparison
Item
700
Wavelength [nm]
Wavelength [nm]
+0.8 dB
Equivalent to
above
Equivalent to
above