KAC-1310 データシートの表示（PDF） - Unspecified

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KAC-1310

1280 (H) x 1024 (V) SXGA CMOS Image Sensor

Unspecified 

IMAGE SENSOR SOLUTIONS

IMAGE SENSOR SOLUTIONS

Color Filters and Lenslets

The KAC-1310 family is offered with the option of

monolithic polymer color filter arrays (CFA’s). The

combination of an extremely planarized process

and proprietary color filter technology results in

CFA’s with superior spectral and transmission

properties. It is available in Bayer RGB (Figure 4)

or CMY (Figure 5) patterns. The complimentary

Bayer CMY array provides a 50% increase in

sensitivity over primary RGB pattern and are often

the best choice for low light applications. This is

due to the higher quantum efficiency (QE) and

larger wavelength spread per color. If the

application is utilizing a color correction matrix,

then this matrix will automatically convert the CMY

to RGB. Other wise a simple matrix must be

applied to affect the conversion from CMY to RGB

space.

col 0 1 2 3

row

G1 R G1 R

B G2 B G2

G1 R G1 R

B G2 B G2

Figure 4: Optional Bayer RGB Pattern CFA

col 0 1 2 3

row

C Y1 C Y1

Y2 M Y2 M

C Y1 C Y1

Y2 M Y2 M

Figure 5: Optional Bayer CMY Pattern CFA

Applications requiring higher sensitivity can benefit

from the microlens arrays shown in Figure 6. The

lenslet arrays can improve the fill factor (aperture

ratio) of the sensor by approximately 1.6x

depending on the F-number of the lens used in the

camera system. Microlenses yield the greatest

benefits when the main lens has a high F-number

or a highly telecentric design. The fill factor of the

pixels without microlenses is ~40%.

Incident Light

Microlenses

Active Photodiode Area

Figure 6: Increase of sensitivity due to microlenses

Frame Capture Modes

There are two frame capture modes:

1) Continuous Frame Rolling Shutter (CFRS)

2) Single Frame Rolling Shutter (SFRS)

The sensor can be put into either one of these

modes by writing either “1” or “0” to cms bit (bit 6)

of Capture Mode Control Register (40h) (Table 47

on page 66).The KAC-1310 uses a progressive

readout mode. Progressive scanning refers to

non-interlaced or sequential row-by-row scanning

of the entire sensor in a single pass. The image

readout happens at one instant of time.

Continuous Frame Rolling Shutter

Capture Mode (CFRS)

The default mode of image capture is the

Continuous Frame Rolling Shutter Capture Mode

(CFRS). In this mode the TRIGGER input pin is

ignored. This mode is most suitable for full motion

video capture and will yield SXGA sized Frame

Rates up to 15 FPS at 20 MHz MCLK and VGA

frames at >30 FPS. In this mode the image

integration and row readout take place in parallel.

While a row of pixels is being readout, another row

or rows are being integrated. Since the integration

time (Tint) must be equal for all rows, the start of

integration for rows is staggered.

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KAC-1310 Rev 4 • www.kodak.com/go/imagers 585-722-4385 Email: imagers@kodak.com

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