Products

Image Sensor

STARVIS/ STARVIS 2

There is a need for security cameras to film with clear images in a variety of environments. Sony's image sensors meet this need by providing high-sensitivity performance suitable for night filming.

  • STARVIS logo

    The STARVIS is back-illuminated pixel technology used in CMOS image sensors for security camera applications. It features a sensitivity of 2000 mV or more per 1 µm2 (color product, when imaging with a 706 cd/m2 light source, F5.6 in 1 s accumulation equivalent), and realizes high picture quality in the visible-light and near infrared light regions.

  • STARVISと従来のものを比較した画像

    ※Simulated Image

STARVIS2 logo

The STARVIS 2 is back-illuminated pixel technology used in CMOS image sensors for security camera applications. It features a sensitivity of 2000 mV or more per 1 µm2 (color product, when imaging with a 706 cd/m2 light source, F5.6 in 1 s accumulation equivalent). It also has a wide dynamic range (AD12bit) of more than 8dB compared to STARVIS for the same pixel size in a single exposure, and achieves high picture quality in the visible-light and near infrared light regions.

What's STARVIS ?

  • STARVIS Slide show

STARVIS : Back-illuminated CMOS Image Sensor

Unlike the front-illuminated-type image sensor, the image is acquired through the back side where
there are no obstacles such as wiring or circuits, so a wider range of light is collected on the photodiode,
achieving high sensitivity. Moreover, it uses the very first pixel specifically developed
for security use in a back-illuminated structure.

Superior low light performance (0.5 lx)
Front and Back-illuminated structure diagram

SNR1s

What's SNR1s ?

Sony is introducing SNR1s [lx] as an index used to quantitatively evaluate picture quality at low illumination. SNR1s [lx] is a proprietary index advocated by Sony, and is limited to CMOS image sensors for security camera applications.
A smaller value indicates better picture quality at low illumination.
SNR1s [lx] is an acronym consisting of "SNR" (Signal-to-Noise Ratio), "1" (represents that the signal level when noise = 1 is 1), and "s" (for Security).

SNR1s [lx] Prescribed Conditions
Application Security Camera
Light Source 3200 [K]
Target Object 18% Grey
F number 1.4
Exposure time 1/60 [s]
Linear Matrix without
Signal G [e-] (Sensor Raw Output)
Noise √Shot Noise[e-] 2 + Dark Noise[e-] 2
Signal : Noise 1 : 1

Note:SNR1s is a new index proposed by Sony for picture quality at low illumination, and is limited to CMOS image sensors for security applications.

Schematic of SNR1s Measurement Method

  • Figure 1 shows a schematic of SNR1s measurement.
    Two 3200 [K] light sources illuminate an 18% gray chart from different directions, and dimming is performed to 100 [lx]. A camera is placed so that the distance from the gray chart to the imaging surface of the image sensor is 1 m, the sensitivity [e-] and dark noise [e-] are measured, and SNR1s [lx] is calculated using the relational equation (1). The luminance when equation (1) equals 1 is SNR1s [lx].
    For further details, contact your local Sony's sales company.

    Formula to calculate SNR1s
  • Schematic diagram of SNR1s measurement

SNR1s Values of CMOS Image Sensors for Security Applications

  • SNR1s [lx] : A smaller value indicates better picture quality at low illumination.
注:
  • SNR1s is a new index proposed by Sony for picture quality at low illumination, and is limited to CMOS image sensors for security applications.
  • Sony reserves the right to change SNR1s values without prior notice.
  • Sony cannot assume responsibility for any phenomena occurring as a result of using released SNR1s values.

NIR

Darkness arouses unease. To capture images even in dark areas and ensure peace of mind, efficient capture of near-infrared light is essential. Sony's photodetectors are made with the optimum structure to capture near-infrared light and provide clear images even in darkness.

NIR light (850nmLED)

HDR

With many security camera images in which light and dark regions coexist, there is a need to clearly capture both regions.
To meet this need, this technology enables both the light and dark regions to be captured clearly to achieve higher security camera visual recognition performance.

HDR On/Off

Provision of STARVIS/ STARVIS 2 logo data

TARVIS logo image Use of positive reproduction, Use of negative reproduction
TARVIS2 logo image Use of positive reproduction, Use of negative reproduction

Customers may use the "STARVIS/ STARVIS 2" logo with Sony's approval in the following circumstances only. Before provision of the logo data, a logo usage agreement will be concluded with the customer. Please contact a sales office in your area for details.

Products: customers' products incorporating Sony's CMOS image sensors equipped with STARVIS/ STARVIS 2 technology.
Materials/Media: product packaging, catalogs, posters, informational websites and other promotional materials, as well as fixtures at exhibitions (panels, etc.) relating to the above mentioned products

  • Note:
  • The logo may not be used on the body of a product or in a system (including in application interfaces, etc.).
  • Sony will conduct a preliminary review before concluding the logo usage agreement. Notification of the results will not be publicized.
    Please be aware that Sony cannot comply with customers' requests in all cases.
  • Sony accepts no responsibility in any matters resulting from use of the logo.
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