SI-1280F- M & RGB MegaCamera™  

1.3 Megapixel, 12-Bit, 60MHz

Ultra-Fast Full-Frame Shutter Digital Camera 

Silicon Imaging Inc. 

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Silicon Imaging is proud to continue its innovation in ultra-high speed machine vision camera.  Driven by the growing demand for consumer Digital Still Cameras, CMOS sensors are continuing to break technical barriers and surpass the performance characteristics of CCD’s in many photonic, imaging and consumer applications.  By utilizing a single highly integrated CMOS device, which incorporates Megapixel sensing areas, timing generation, signal processing and high bandwidth outputs, Silicon Imaging has developed a very compact, low-power, ultra high speed Megapixel digital camera system.

1280 x 1024 Megapixel Imaging - Ultra Speed

The SI-1280F is the worlds first 1.3 Million pixel Full-Frame Shutter, all-digital CMOS camera capable of running at video rates of 40 frames/second at its full 1280 x 1024 resolution and over 500 frames/per second at 320 x 240 resolution.  The entire package is only 45 x 52 x 50mm and is small enough to placed on a robot for semiconductor machine vision inspection, embedded into a portable medical instrumentation for cell biology or placed in an aerial drones for remote surveillance.

 

12-Bit Pixel Clock Sampling – Sub-Pixel Accuracy

The MegaCameraä uses 12-Bit digitizers to sample the pixel data at up to 60MHz to achieve 40 Frames/sec data throughput at its full Megapixel resolution. Converting the pixel data directly to digital at the sensor head eliminates pixel-sampling jitter and enables accurate sub-pixel metrology, image analysis and improved live video reconstruction.

 

Full-Frame Triggered Shutter – Stop the Motion

Most common CMOS sensors only have a  “Rolling Shutter” to control the exposure time for each line in the image.  This method can produce unwanted motion tilts or jagged edges, as each row ends integration after the previous one above it.  The SI-1280F provides a Full-Frame triggered shutter, which completely stops any motion artifacts by exposing all pixels simultaneously and holding the exposed value until it is progressively readout.

 

Dual Slope Exposure - “Super-Dynamic Range”

The SI-1280F can be used in a dual slope bi-linear mode, extending the useful dynamic range in scenes where detail in bright areas are to be preserved at the same time as maintaining details in darker regions.  In normal linear response, a camera requires a short exposure to keep the bright areas from saturation.  However, the darker regions of the image would not have enough time to integrate charge.  If the exposure is set longer the detail in the dark areas will become visible by the brighter areas will become saturated.  The dual-slope operation combines the transfer of nominal integration time (steep slope, high sensitivity) with the transfer curve obtained from a short electronic shutter (shorter exposure time, lower sensitivity), into a single exposing operation.

 

2400 Frames per Second - Windowing & Subsampling

Ideal for object tracking and high-speed Motion analysis, the SI-1280 is capable of generating imagery at over 2400 frames per second by reducing the size of the readout image (ex. 100x100).    This windowed Region-of–Interest (ROI) can be moved dynamically, creating an entirely electronic pan/tilt/zoom function within the camera field-of-view.

 

CameraLink Digital Interfaces

An industry standard forum has adopted CameraLinkä, for low cost connectivity and cabling at very high speeds.  The SI-1280F-CL can output 1280 x 1024 12 bit data at 40 frames per second (865 Mbits/second) continuously to a frame grabber.  The single cable  includes image data, vertical and horizontal synch, LVDS Triggering and 9600 baud Serial communication.  As this camera complies with the standard, it is compatible with many popular frame grabber and image processing hardware devices and fiber-optic extender for extended distance transmission.

 

GigE-Cameralink – Gigabit Ethernet Connectivity

Now you can capture high-speed MegaCamera images to your PC from distance of a 100-meters using CAT-5 wire using the Silicon Imaging GigE-CameraLink Interface.  The GigE-Cameralink captures MegaCamera digital images and transmits them via 10/100/1000 Gigabit Ethernet directly to your PC at speeds over 100MB/sec. 

 

 

 

Overall View of Software

FEATURES

·       1280 x 1024 Resolution (1.3 Million Pixels)

·       Full Frame Triggered Shutter, Progressive scan

·       2/3” Imaging Format , 6.7um Square Pixel

·       Windowing and Subsampling

·       12 Bits per Pixel, 55MHz Sampling

·       High Speed Readout (30  ~ 3000FPS)

·       Region-of-Interest (ROI) windowing

·       Progressive Rolling Shutter Mode

·       1usec~4sec Precision High Speed Shutter

·       Long Integration (up to n-Frame Times)

·       Programmable Gain, Offset, Clock, Shutter & ROI

·       External Clock Synchronization (FrameLock)

·       Monochrome & Color Bayer RGB Models

·       5VDC Low Power, Small Package

·       C-Mount Housing or PCB versions

·       CameraLinkä  Digital Interface

 

SI-1280F MegaCamera Specifications

 

Sensor:

Active Pixels

1280 (H) x 1024 (V)

Optical Imaging Format

2/3”  (8.576mm X 6.861mm)

Pixel Size (pitch)

6.7um x 6.7um

Pixel Type

CMOS

Aspect Ratio

1 : 1

Spectral Response

400 ~ 1000 nm

FPN (on chip corrected)

<0.5%

PRNU

10%p/p; 1.1%RMS

Conversion Gain

12 mV/electron

Sensitivity

1.85V/Lux.sec (visible)  or 336 V.m2/W.s

Fill Factor

~55%

Read Noise

80~90 e-(sync shutter);70~80 e-(rolling)

Dark Current 

2100 pA/cm2 at RT or 5900 e-/s

Saturation Charge

120,000 e-

Windowing (ROI)

Programmable row/column

Sub-sampling

1:2 for color and monochrome

Noise Reduction

Correlated Double Sampling (CDS)

Readout Method

Progressive Scan

Readout Types

Destructive

Shutter

Full Frame Shutter or Rolling Shutter

Shutter Speed / Integration

Variable, 1 to 1280 Line times

Minimum Blanking

150 Clocks/line

 

 

A/D Conversion & Sampling Clock Synthesizer

A/D Conversion

30Mhz (Nominal), 60MHz (max)

Vertical Resolution

12 Bit

Pixel Clock Frequency

20 ~ 60Mhz Programmable

Adjustment Method

Serial command Protocol

A/D SNR

67.5dB

Output Noise

0.2 LSB rms

 

 

Digital Video Output  

Readout Rate

60 MHz Maximum, PCI 8 bit @ 60MHz,

PCI 12 bit @ 50MHz; PCI-X @ 60Mhz

USB @ 45MHz

Readout Format

CL-12 Bit (Ports A, B)

Frame Rate @ Max Clock

 

1280 x 1024

1280 x 720

768 x 768

640 x 512

512 x 512

360 x 300

320 x 240

256 x 256

64 x 64

USB 8 bit

 

24

36

45

75

85

150

180

190

375

PCI –CL(12)

 

34

48

70

123

147

326

443

481

3650

PCI-X – CL(12)

And PCI –CL(8)

41

58

85

148

177

392

532

577

4380

Line Readout Rate

23.9 usec per line @ 55MHz

Signal-to-Noise

> 60dB (fc=20MHz, Gains=1.0)

Connector

 

MDR 26-pin (3M 10226-6212VC)  (-CL)

USB 2.0 Integrated cable (-U)

 

 CameraLink Frame Grabber Control:

Serial Communication

RS-232 Protocol 9600bps

Signaling

TX & RX (LVDS)

Asynchronous Triggers

LVDS – CC1, 2, 3, 4 (-CL)

TTL Trigger-In & Strobe-Out (-U)

High Speed Shutter

1usec ~ 4sec, in 1usec increments

Trigger-to-Exposure

128 clocks (3.2usec @40MHz)

Long Integration

n-Frame Times

Region-of–Interest

Programmable Horiz & Vertical

Gain & Offset

7 Settings (1.0x, 1.33x, 2.0x, 4x)

Programmable Modes

Full-Frame, Window, Subsampling

Long Integration & Single-Shot

Setting Timing

Next top of Frame

Ext Clock Sync

Clock in or Clock Out (-X Option)

 

 

Power

Input Voltage

+5  VDC +/- 10%

Power

2.5 Watts

Power/Trigger Connection

Tajimi RO3-PB3M 3Pin (-CL)

Tajimi RO3-PB5M 5Pin (-X)

 

 

Mechanical

Lens Mount

C-Mount, 7mm Back focus Adj.

Enclosure Size

45mm W x 52mm H x 50mm L

Weight

12 oz.

Camera Mount

¼” x 20standard tripod mount

Cable Connector

Cameralink MDR-26 (-CL)

High-Speed  3-meter USB Cable

  with Type-A Connector (-U)

 

 

Spectral Response Curve

 

 click image to view larger version

SI-1280F CameraLink Frame Rates 

 

The SI-1280F has a Digital Clock Synthesizer capable of generating a range of frequencies from 20MHz to 60MHz.  The pixel data output rate is the same as the sampling clock rate. A range of preset frequencies are listed below. There are 150 clocks overhead per row for readout

MHz

  SI-1280F Frame Rate

Clock Rate

1280x1024

1280 x 700

800 x 600

640x480

320x200

240x180

200 x 150

128x128

20 MHz

14

20

35

53

177

285

381

562

25 MHz

17

25

44

66

222

356

476

703

30 MHz

20

30

53

79

266

427

571

843

35 MHz

24

35

61

92

310

499

667

984

40 MHz

27

40

70

105

355

570

762

1124

45 MHz

31

45

79

119

399

641

857

1265

50 MHz

34

50

88

132

443

712

952

1405

55 MHz

38

55

96

145

488

783

1048

1546

60 MHz

41

60

105

158

532

855

1143

1686

 

Frame Rate Calculation

To calculate the frame rate for any clock rate the equation is:

(               clock rate(Hz)                   )         =     #  Frames Per Second (fps)

                        ( # of columns + 150)   *  ( # of rows)

Example:    What is the frame rate, at 60MHz clock rate for an image size of 800 x 600?

              60 x 106                                       =     105  Frames Per Second (fps)

                              ( 800 + 150)  *  ( 600  )

**  FRAME RATES are based on ROLLING SHUTTER operation.  Full-Frame Shutter requires the additional time for exposure for each frame.   Subsampling frame rates are based on the resulting size of the subsampled image or window.

Test Image - Click to view full size