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PRELIMINARY
Lighting
Imaging
Telecom
Imaging Product Line
LD3500 Series Low-Cost Digital Linescan Camera
512, 1024 and 2048 Pixels, and Parallel LVDS Outputs
DATASHEET
Description
In the LD3500-series digital linescan camera, PerkinElmer has combined the best features of photodiode array detection, high-speed charge-coupled scanning, and digital line scan camera technology to offer an uncompromising solution to the increasing demands of advanced imaging applications. The LD3500-series are high performance, low-cost, digital linescan cameras. The LD3500 features a CameraLinkTM or Parallel LVDS (RS-644) style video output with resolutions of 512, 1024 or 2048 pixels, which can achieve data rates of up to 20 or 40 MHz with exceptional noise immunity. The cameras are designed for volume applications where small size and low cost are required. In order to allow the user to compensate for variations in illumination found in "real-world" application environments, the cameras feature adjustable gain levels. The LD3500-series cameras feature a geometrically precise photodiode CCD image sensor with 14m photo-elements. State of the art
electronic design enables the LD3500-series to deliver consistent, reliable performance while the sturdy metal housing provides maximum protection in a variety of harsh environment and factory floor conditions. The LD3500-series linescan cameras transform light imaged during a scene into a digital video signal. Antiblooming structures within the sensor ensure superior performance over a wide range of lighting conditions. User-defined control is possible for line rate, integration time and video data rate. The LD3500 cameras may be interfaced to most frame grabber cards, allowing for a tested, plug and play solution. Typical high performance line scan applications include lumber processing, noncontact measurement, document scanning, dimensional gauging, biomedical imaging, bar code scanning and many other industrial and scientific applications.
Features
* 20 and 40 MHz output rate models * Geometrically precise 14 m square pixel linear CCD * Small size: 2.5" H x 2.5" W x 3.2" L * High dynamic range (250:1) * CameraLink and Parallel LVDS video output models * 8-bit grey scale resolution * Antiblooming control * Single power supply operation * Electronic exposure control * Adjustable gain levels * CE mark certified * Line scan rates to 68 kHz
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Digital Linescan Camera
Figure1a: Spectral Sensitivity Curve (1X Gain)
Sensor Description
The LD3500-series cameras contain a single output, high-performance, highresolution line scan image sensor (PerkinElmer Optoelectronics Reticon(R) parts RL0512PAG, RL1024PAG, or RL2048PAG) featuring a pinned photodiode pixel. The spectral response of the sensor is shown in Figure 1a, with the sensor window transmission curve shown in Figure 1b.
100 90 80 Responsivity (DN 8 /J/cm ) 70 60 50 40 30 20 10 0
2
100 90
Right Scale
80 70 60 50 40 QE (%)
Left Scale
30 20 10 0
Functional Description
The video signal from the sensor is processed through a single channel of sampled-and-held, raster order, digital video data. The video channel signal processing circuitry offers adjustable gain levels that allow users to customize of the camera to unique lighting applications
250
350
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550
650
750
850
950
1050
Wavelength (nm)
Figure 1b: Window Transmission Curve
100 90 80
Transmission (%)
Operating Modes
The LD3500 series cameras can operate in Master or Slave Mode. When the camera is set to Master Mode, the camera operates at its maximum line scan and data rate. When the camera is set to Slave Mode, the cameras scan and data rates are determined by the users input signals to the camera. The opertaing mode is set via the serial connection on the CameraLink models, and is autodetected on the LVDS models. Autodetection is accomplished by looking for either a Line Transfer (LT) and/or External Clock signal. If the camera receives a LT signal, but no external clock, it will continue to run a the maximum data rate, but will only intiate a LT upon signal. If the camera recieves an external clock signal, it will run at that clock signal with either an internal or external LT signal.
70 60 50 40 30 20 10 0 150 250 350 450 550 650 750 850 950 1050
Wavelength (nm)
Input/Output Signal Specifications
The LD3500 camera requires a single DC supply (+12 to 24V) for operation. An internal oscillator sets the default data output rate to default model rate (20 or 40 MHz). CameraLink Models: CameraLink allows for 4 manufacturer-defined camera control signals (CC1-CC4). CC1 is a Line Transfer (LT) signal. CC2 is a Line Reset (LR) signal. CC3 and CC4 are reserved for future assignment.
The rising edge of the LT signal transfers the charge from each photosite to the readout registers. The readout registers, in turn, transport the charge from each photosite in succession to the video outputs. The exposure time of the camera can be externally controlled using the LR input. The LR input is active low (ON) in polarity and therefore, when not in use, must be held high or left unattended (OFF). In this condition, the exposure time is defined by the period of the LT signal. Output signals are compliant with CameraLink specifications. Parallel LVDS (RS-644) Models: Parallel LVDS models of the LD3500 provide Master Clock (MCLK), Line Transfer (LT) and Line Reset (LR) input signals. The MCLK input determines the data rate frequency for values up to maximum clock of the camera. The MCLK input is optional, as the camera is preset to run off of the internal oscillator at the default maximum data rate.
Should a data rate slower than that default rate be necessary, an externally supplied master clock can be used. The data rate may be run from 2 MHz to cameras maximum clock rate. The Line Transfer input signal transfers the charge from each photosite to the readout registers. The readout registers, in turn, transport the charge from each photosite in succession to the video outputs. The exposure time of a LD3500-series camera can be controlled by using the external LR input. The LR input is active low (ON) in polarity and therefore, when not in use, must be held high or left unattended (OFF). In this condition, the exposure time is defined by the period of the LT signal. When using the LR input signal, the exposure period is defined to be the time between the rising edge of LT to the rising edge of LR. The LD3500-series camera provides two output synchronization signals: Camera Clock (CCLK) and Line
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Digital Linescan Camera
Input/Output Signal Specifications (Continued)
Enable (LEN). The Camera Clock (CCLK) operates at either the MCLK frequency or default camera frequency, and is synchronized to the analog video. The output of the CCLK signal can be used to capture digital video data by a frame grabber or digitizer. The Line Enable (LEN) signal brackets the valid digital video. The signal becomes high one CCLK period before the first valid pixel and goes low one CCLK period before the last valid pixel. In all modes of operation on the LVDS models, a single line delay is present due to the necessity of storing all video data into memory before the video is output.
Figure 2. Connector Diagram
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26
3M Connector MDR26 Position Plug Recommended Cable: 3M14X26S2LB-XXX-OLC
Parallel LVDS 18 36 1 19
Video Gain
The LD3500-series camera features an adjustable video gain. This allows users to amplify the video signals for individual application needs. Photo Response NonUniformity (PRNU) remains linear with gain. CameraLink Models: Gain levels are set by serial communication though the CameraLink connector. Gain can be set from 0 to 24.5 dB in increments of 3.5 dB. Gain settings are not lost when the camera is powered down. Parallel LVDS (RS-644) Models: Gain levels are set by differential RS-644 gain control inputs on the camera connector. The gain levels can be set at 1, 2, 4 and 8X full-scale gain, allowing the user to easily configure the camera output to suit their application needs. Gain settings are not held after power down; proper input signals must be given at start-up, and held throughout operation for gain settings to remain at desired levels.
Recommended Cable: 3M10136-6000EC series
Figure 3. Power Connector Diagram
1 2 3 6 5 4
Connector: Hirose HR10A Mating Part: Hirose HR10A-7P-6S
Table 2. Power Connector Pinout
Pin 1 2 3 4 5 6 Signal 12-24VDC 12-24VDC Do not connect Do not connect Ground Ground
Data and Power Connectors
CameraLink Models: The communications connector on the LD3500-series camera is a 26-pin D-type male connector, common to all CameraLink applications. This 26-pin connector contains all communications and controls needed for camera operation. Power is provided to the LD3500 via a 6 pin,
Note: The power connector and pinout are common to all CameraLInk and Parallel LVDS models
Hirose HR10A circular jack. Refer to Table 1a for pinout of the communications and control connector. Figure 2 provides pinout locations for this connector.
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Digital Linescan Camera
Data and Power Connectors (cont.) Parallel LVDS (RS-644) Models:
The communications connector on the LD3500 is a MDR36 (mini-D-shell) connector. This 36 pin connector provides all communications and controls needed for camera operation. Power is provided to the LD3500 via a 6 pin, Hirose HR10A circular jack. Refer to Table 1b for pinout of the communications and control connector. Figure 2 provides pinout locations for this connector
Table 1a. Camera Link Connector Pinout
Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 Signal Inner Shield X0X1X2XclkX3SerTC+ SerTFGCC1CC2+ CC3CC4+ Inner Shield Pin 14 15 16 17 18 19 20 21 22 23 24 25 26 Signal Inner Shield X0+ X1+ X2+ Xclk+ X3+ SerTCSerTFG+ CC1+ CC2CC3+ CC4Inner Shield
Camera Construction
The camera head is housed in a rugged, one piece deep drawn aluminum case, measuring 2.5" H x 2.5" W x 3.2" L (excluding lens mounts or connector extensions) specifically designed for industrial applications. The sensor is mounted on an aluminum plate that efficiently transfers heat to the camera case. The camera is provided with a standard 1/4"-20 UNC tripod mounting block, which can be attached to any of the four sides of the camera. The mounting holes used to attach the tripod block can also be used to mount the camera assembly. Additionally, the CCD sensor is thermally coupled to the faceplate of the camera, and the conductive cooling of this surface is useful in minimizing thermally generated dark current and noise of the camera system.
Table 1b. Parallel LVDS (RS-644) Connector Pinout
Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Signal Do not connect Gain 0+ Inner Shield Gain 1+ MCLK+ LR+ LT+ Do not connect D7+ D6+ D5+ D4+ D3+ D2+ D1+ D0+ CCLK + LEN+ Pin 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 Signal Do not connect Gain 0Inner Shield Gain 1MCLKLRLTDo not connect D7D6D5D4D3D2D1D0CCLK LEN-
Optical Interface
The LD3500-series cameras are equipped with a U-Mount lens interface (MA2-16H) that is aligned to the CCD sensor. These standard adapters allow the user to select the optimum lens to suit their particular application.
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Digital Linescan Camera
Table 3. LD3500 Camera Specifications
Camera Characteristics Number of Active Pixels Pixel Size Spectral Response Sensor Window Exposure Control Antiblooming Camera Operation Features Number of Outputs Communications Protocol Output Depth 1 CameraLink (LD35xxPGK-011) Parallel LVDS (LD35xxPGL-011) 8 bit Value 512, 1024, or 2048 14m x 14m 250-1000 nm Glass Yes Yes PRNU Dynamic Range Maximum Output Rate Lens Mount Temperature Requirements Operating Temperature Storage Temperature Power Requirements Input voltage 12 to 24 VDC -20 to 55 C -40 to 80 C Camera Characteristics Adjustable Gain Range Value 0 to 24.5 dB (LD35xxPGK-011) 1, 2, 4, 8X (LD352xPGL-011) +/-10% 250:1 20 MHz (LD352xPGx-011) 40 MHz (LD354xPGK-011) U Mount
Figure 4. Outline Drawings
Front View Registration Hole 0.156 +002 x 0.09 deep -000 2.50 (63.50) Rear View CameraLink Registration Hole +002 0.126 -000 x 0.09 deep 2.50 (63.50)
2.50 (63.50)
Pixel 1
2.50 (63.50)
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26
CameraLink Connector MDR26
Registration Hole 0.156 +002 x 0.09 deep -000 Side View
Registration Slot +002 0.126 -000 x 0.09 deep x 0.150 long Rear View Parallel LVDS
Power Connector HR10A
1.25 (31.75) 2.50 (63.50) 1.25 (31.25)
3.20 (31.28)
18 36 1 19
MDR36 Connector
2.50 (63.50)
Power Connector HR10A
Measurements in inches (Millimeters)
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PDP-206.01B - 7/2002W Page 5
Digital Linescan Camera
Figure 5a. CameraLink Slave Mode Timing
Integration Time 24 clock cycles N + 70 clock cycles minimum 2 cycles min
2 cycles min 2 cycles min
LT
57 +/-1 clock cycles
CCLK
N clock cycles
LEN
43 cycles min
Video
32 cycles min
3 isolation
10 dark pixels
2 extra
N valid
pixels 2 extra
10 dark
3 isolation 10 dark pixels
6 cycles minimum
6 cycles min
LRn Note: N is the number of active pixels on the sensor
Figure 5b. LVDS Slave Mode Timing (LRn=low)
N + 76 clock cycles minimum 2 clock cycle min 6 clock cycle min 70 +/-1 clock cycles Integration Time
Note 1
LT
N clock cycles 6 clock cycle min
LEN
Valdi Video
Video
N valid pixels
2 extra
N Valid pixels
2 extra
CCLK Note: 1. 950 ns for the LD352x, 475 ns for the LD354x 2. N is the number of active pixels on the sensor
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Digital Linescan Camera
Figure 6: LD3500 Camera Block Diagram
FPGA
Camera Mode
RS-644 Receivers +LT LINE TRANSFER LOGIC
OH1 OH2
-LT +MCLK LVDS Models Only -MCLK +LR
I M A G E R
OTG
D R I V E L O G I C
CAMERA TIMING LOGIC
L E V E L
T R A N S
CLK LOGIC
OPG ORG OAB
Exposure Control Logic Line Enable Logic
-LR Gain Inputs LVDS Models Only Gain Inputs
Lens
CameraLink Models Only Set through CameraLink serial communications
VSP TIMING LOGIC
LVDS Output Gain
10 LVDS pairs LEN, CCLK 8 bit video
VIDEO SIGNAL PROCESSING
Output Drivers
C D S
GAIN CONTROL
8 bit video CameraLink Output
Compliant with CameraLink specifications
Single D.C Power Supply Input 12-24V
Table 5. LD3500 Camera Model Specifications
Model Number LD3521PGx LD3522PGx LD3523PGx LD3541PGK LD3542PGK LD3543PGK Number of Pixels 512 1024 2048 512 1024 2048 Active Area Pixel Length 7.168 mm (0.28") 14.336 mm (0.56") 28.672 mm (1.13") 7.168 mm (0.28") 14.336 mm (0.56") 28.672 mm (1.13") Max Output Speed 20 MHz 20 MHz 20 MHz 40 MHz 40 MHz 40 MHz Max Line Rate 34 kHz 18.2 kHz 9.4 kHz 68 kHz 36.4 kHz 18.8 kHz
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PDP-206.01B - 7/2002W Page 7
Digital Linescan Camera
Table 5. Stock Part Numbers
Output Data Rate Pixels 512 1024 2048 LD3521PGK-011 LD3522PGK-011 LD3523PGK-011 LD3541PGK-011 LD3542PGK-011 LD3543PGK-011 LD3521PGL-011 LD3522PGL-011 LD3523PGL-011 20 MHz CameraLink 40 MHz RS-644 20 MHz
Ordering Information
While the information provided in this data sheet is intended to describe the form, fit and function for this product, PerkinElmer reserves the right to make changes without notice.
Table 6. Sales Offices
North America
United States PerkinElmer Optoelectronics 2175 Mission College Blvd. Santa Clara, CA 95054 Toll Free: 800-775-OPTO (6786) Phone: +1-408-565-0830 Fax: +1-408-565-0703
Europe
Germany PerkinElmer Optoelectronics GmbH Wenzel-Jaksch-Str. 31 D-65199 Wiesbaden, Germany Phone: +49-611-492-570 Fax: +49-611-492-165
For more information e-mail us at opto@perkinelmer.com or visit our web site at www.perkinelmer.com/opto. All values are nominal; specifications subject to change without notice.
Asia
Japan PerkinElmer Optoelectronics NEopt. 18F, Parale Mitsui Building 8 Higashida-Cho, Kawasaki-Ku Kawasaki-Shi, Kanagawa-Ken 210-0005 Japan Phone: +81-44-200-9170 Fax: +81-44-200-9160 www.neopt.co.jp 47 Ayer Rajah Crescent #06-12 Singapore 139947 Phone: +65-770-4925 Fax: +65-777-1008
Singapore
(c) 2000 PerkinElmer Inc. All rights reserved.
PerkinElmer, the PerkinElmer logo and the stylized "P" are trademarks of PerkinElmer, Inc.
PDP-206.01B - 7/2002W
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