New Sony 24.8Mpixel CMOS Camera Sensor Announced

SONY DEVELOPS 35mm FULL SIZE CMOS IMAGE SENSOR WITH 24.81 EFFECTIVE MEGA PIXEL RESOLUTION AND EXTREMELY HIGH SIGNAL CONVERSION SPEED FOR USE IN DIGITAL SLR CAMERAS
All-pixel scan mode of 6.3 frame/s

Sony Corporation today announced the development of a 35mm full size
(diagonal:43.3mm/Type 2.7) 24.81 effective megapixel, ultra-high speed
high image quality CMOS image sensor designed to meet the increasing
requirement for rapid image capture and advanced picture quality within
digital SLR cameras.

Development Background

In
recent years, the demand for digital SLR cameras featuring high
resolution and wide graduation ranges capable of capturing every detail
of the subject matter has continued to increase, particularly among
high-end amateur users.  Additionally, the
increasing user requirement to shoot from the same focal length and
angle as 35mm film cameras using interchangeable lenses has led to
significant interest in the development of 35mm, full size CMOS image
sensors.

However,
there are a number of technical challenges to developing full (large)
size image sensors, such as the propagation delay caused by using
extended power circuitry and signal lines, and the difficulty of
maintaining uniform sensitivity and signal saturation across the
surface of the screen.  It is therefore extremely important to accurately control exposure variance and match circuit patterns.

Sony CMOS sensor

Advantages of This Device

The
newly developed CMOS image sensor combines unique circuit design
technology with Sony’s advanced fabrication expertise, such as advanced
planarization for minimizing fluctuation, to realize 35mm, full size,
24.81 effective megapixel resolution. 

Sony’s
“Column-Parallel A/D Conversion Technique” also provides each column
within the sensor with its own A/D converter, minimizing image
degradation caused by the noise that arises during analog processing
while at the same time delivering an extremely high signal conversion
speed.

The
enhanced image quality generated by the sensor’s 24.81 effective
megapixel resolution, wide range of graduation expression achieved by
its full size broad dynamic range, and the low noise, high resolution,
ultra-responsive performance provided by Sony’s Column-Parallel A/D
Conversion technique enable it to meet the ever-increasing requirements
within high performance digital SLR cameras.

Sony will target for mass production of this CMOS image sensor within this year.

Major Features

High picture quality in 35mm full size image sensor with 24.81M effective pixels

“Column-Parallel A/D Conversion method” achieves high S/N and high-speed imaging

CDS/PGA(24dB)Circuit (PGA: Programmable Gain Amplifier

12bit-AD Converter on chip

Diversified readout mode

All-pixel scan mode 6.3 frame/s (12bit)

Window readout

High-speed digital output12 channel parallel LVDS output

Device Structure

Image size                                Diagonal width 43.3mm (Type 2.7)

Total number of pixels               6236(H) x 4124(V) approx. 25.72M pixels

Number of effective pixels         6104(H) x 4064(V) approx.24.81M pixels

Number of active pixels            6096(H) x 4056(V) approx.24.73M pixels

Chip size                                  41.0mm (H) x 31.9 mm (V)

Unit cell size                             5.94μm (H) x 5.94μm (V)

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