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Machine Vision
A Lambda Photometrics Newsletter
Spring 2012
|
Issue 01
High-sensitivity
near-infrared
camera from
Baumer
Utilizing the Sony ICX285 CCD with
enhanced sensitivity in the near
infrared (NIR), the TXG14NIR is
especially qualified for automatic
inspection of wafers for solar cells.
Super resolution machine vision
camera captures details fast
At 29-Mpx, Imperx B6620 cameras capture scenes at near video rates
with unparalleled resolution available now from Lambda Photometrics.
From high-speed automated inspection of printed circuit boards to rapid 3D mapping of
disaster areas, Imperx supports a wide range of high-resolution video-capture applications
with two 29-Mpx B6620 cameras. Units are available with either Gigabit Ethernet or
Camera Link outputs.
High resolution is important for a wide range of video-capture applications, where large
areas need to be viewed in fine detail. Shutter speeds up to 12.5 µsec freeze even the most
rapid motion. Frame rates up to 2.4 fps follow rapidly evolving scenes. Standard F-mount allows
inexpensively fitting the cameras to almost any optical-system requirement. The cameras ability
to image at light levels as low as 1 lux (f/1.4) allows capturing even dimly lit scenes.
The cameras small size (60 x 60 x 45 mm), light weight (320 gm), wide operating
temperature range (-30 to +85°C), low power consumption (3.6W at 12V) and high shock
rating (10 g shock at 20-200 Hz, and 70 g sustained acceleration) make it an ideal choice for
a wide range of research and testing applications under harsh conditions.
An RS-232 interface allows programming the cameras with up to eight independent areas of
interest; 8-, 10-, 12-, or 14-bit output formats; and binning of up to eight pixels horizontally and
vertically for variable image resolution under automated control. Programmable long integration
time of up to 16 seconds allows imaging static scenes even under extreme low-light conditions.
Two models are available: the IGV-B6620 outputs video over Gigabit Ethernet, and the
ICL-B6620 over Base Camera Link.
COMPANY NEWS
Lambda Photometrics welcomes Mark Bambrick to the Machine Vision
Sales Team and Tom Lloyd to the Service Team.
Mark has many years of experience finding solutions and supporting customers of OEM’s,
system integrators, distributors and end users across the UK. Marks’ addition to the sales team
will enhance our sales and support to all our customers. E: [email protected]
Tom joined our service team in August, with knowledge of calibration and writing technical
procedures to component level repair and equipment testing. Tom’s knowledge is an asset to
Lambda and welcome addition to the service department.
www.lambdaphoto.co.uk
Measuring electroluminescence (EL)
using NIR imaging cameras permits the
detection of fractures as well as failures in
the crystal structure.
The TXG14NIR camera provides a
significantly higher sensitivity at the required
wavelengths and simultaneously, provides
high resolution images with 1392 x 1040
pixels. Hot pixels and structural defects
within the wafer can be detected easily.
Baumer’s innovative TXG14NIR cameras
enable better inline process and quality
control. The TXG14NIR – a TXG14 featuring
enhanced sensitivity for near-infrared light –
is now available from Lambda Photometrics.
The Gigabit Ethernet camera with 2/3”
Sony sensor offers a resolution of 1392 x 1040
pixel at frame rates up to 20 fps. The “NIRmode” is most effective when the exposure
time exceeds 250 µsec.
TECHNICAL GUIDE
Current digital video interfaces such
as Camera Link, GigE Vision and
FireWire all have limitations and do
not meet the requirements of next
generation imaging applications.
CoaXPress overcomes these
limitations and combines the best
features of each of these interfaces
into just one interface solution:
High data rates
Long cable lengths
Real time behavior through fixed,
CoaXPress
high speed camera interface
High-resolution/high-speed digital
cameras are taking on a critical
role in military and aerospace
applications as the industry strives
to achieve real-time image
acquisition requirements while
meeting an ever increasing demand
for more “pixels on target”.
low latency
Precise triggering capability
Flexible and reliable through the
use of standard coax
Ease of integration: video,
communication, control and
power over a single cable
Cost effective cable solution
Hot pluggable
Plug-n-play
Each CoaXPress link provides the
following signaling connections:
A high speed downlink
(camera-to-host ) at up to
6.25 Gbps carrying
Streaming video data
Control responses
Trigger
GPIO
A low speed uplink ( host-tocamera ) at 20.83 Mbps carrying:
The bandwidth provided by the transport
mechanism (i.e. the interface between
the camera and host processor) often at
times becomes the limiting factor.
Additionally, characteristics such as
distance, latency, power, connectivity and
reliability are considered equally as critical
in many applications.
CoaXPress is a high-speed, point to point,
serial communications standard for the
transmission of video. It provides an
interface to connect Devices (typically
cameras) to Hosts (typically frame grabbers)
through a standard 75 ohm coaxial cable.
It includes a high-speed downlink (camerato-host) of up to 6.25 Gbps for video
transport plus a lower speed 20 Mbps uplink
(host-to-camera) for communications and
control. The protocol defines the transfer of
video data, control data, triggers and
general purpose I/O over a single link.
Power is also available over the cable and
cable lengths of greater than 100 meters
may be achieved.
CoaXPress combines the simplicity of
coaxial cable with state of the art high speed
serial data technology. The combination of
these two highly desirable features – standard
coaxial cable plus high speed – provides a
revolutionary leap forward in high speed
image and data transmission.
Control commands
Why Coax?
There are several advantages to specifying
Coaxial cable over other medium including:
Trigger
Coax is acknowledged to be the best
GPIO
A power connection (host-to-
electrical medium for high speed transfer.
Coax cables are very reliable and
cost effective.
camera) of up to 13W @ 24V.
Coax does not suffer from intra-pair
skew, an important performance limiter
for differential cables at high speeds.
2
Machine Vision
Excellent EMI/EMC performance.
A large variety of low cost cables allowed
including thick ones for longer distance,
thin or flexible for shorter distance.
It is easy to install and terminate
connectors in the field.
There is a legacy Coax cable
infrastructure, using analog cameras
for security, surveillance or broadcast
applications, which need to be
upgraded to high resolution digital
cameras.
Can be used with slip-ring or rotary
joints, typically used in defence,
robotic and surveillance applications,
where continuous 360° panning may
be a requirement.
The CoaXPress specification provides many
features including:
Plug-n-play
The protocol contains mechanisms for
automatic link setup (i.e. discovery, bit rate
selection, packet size negotiation, etc.) as
well as camera and host setup (i.e. image
format, bit depth, data packing format, etc.).
A Gen<i>Cam compliant XML file located
inside the camera, and accessible by the
host, exposes all of the features that the
camera supports.
Power over Coax
The protocol defines an automated
mechanism for the host to supply power to
the camera. The available power per cable is
13W at a nominal 24V. The protocol
implements device detection and short
circuit protection to minimize the risk of
damage should a non-compliant device be
accidentally connected to a CoaXPress host.
www.lambdaphoto.co.uk
Line 1
Line 2
Line 3
Line 4
Line 5
Raw line data
Explanation of terms used:
Form into a stream
SOH
SOL
IH
SOL
Line 1
Pkt 0
SOL
Line 2
Pkt 1
SOL
Line 3
Pkt 2
Line 4
Pkt 3
Stream
data
Line 5
Pkt 4
SOH
IH
SOL
SPH
SPT
Stream
markers
SOL
5
Start of Header
Image Header
Start of Line
Stream Packet Header
Stream Packet Trailer
Packetize
Pkt 0
IH
Pkt 1
1
SPH
1
Pkt 2
2
SPH
2
Pkt 3
3
3
SPH
SPT
SPT
Pkt 5
Pkt 4
4
SPH
SPT
4
5
SPH
SPT
SPH
SPT
SPT
file stored in the camera. This XML file
exposes the camera’s features to the host and
provides register addresses and attributes for
each feature. The control channel protocol
uses 8B10B encoding as well as CRC to ensure
data integrity.
Link Protocol
The link protocol defines a point-to-point
interface between the camera and the host.
The link includes a Stream Channel as well
as a Control Channel.
Stream Channel
The stream channel transfers video data
where video frames are first encapsulated
into “streams” and then segmented into
fixed length “packets”. The use of 8B10B
encoding as well as CRC ensures data
integrity across the link.
Triggers
The protocol defines a bi-directional
trigger mechanism. Low-latency trigger
signals can be carried across the link via
trigger packets. To minimize trigger jitter,
the time between trigger event and the
trigger packet being sent is coded into
the packet as a delay value. The receiver
can then use this delay value to recreate
the trigger event with low jitter and a
fixed latency.
Triggers on the camera-to-host downlink
have accuracy equal to 10 transmitter bit
periods (i.e. +/- 2 ns at 3.125 Gbps).
Triggers on the host-to-camera uplink have
a low fixed latency of 3.4 µsec with an
accuracy of +/- 4 ns.
Control Channel
The camera is controlled by the host via
registers. The control channel is used to
provide access through specific control
commands, transmitted from the host to
the camera, and the resulting
acknowledgement responses, transmitted
from the camera to the host. Following the
Gen<i>Cam method of device control, the
protocol requires that the host read an XML
Stream
data
packets
5
GPIO
The protocol defines a bi-directional
general purpose I/O mechanism.
The transmitting side monitors the state
of 8 signals and transmits a GPIO packet
when the logic state changes in order
to maintain the same logic level at the
receiving end.
Link Test
The protocol defines a bi-directional link
test facility to test the quality of the link.
Two link tests are defined: host-to-camera
and camera-to-host. All link tests are
initiated by the host. A pair of test pattern
generators and receivers is included in both
the host and the camera. The test generator
transmits a link test packet containing a
known test pattern. The test receiver
compares the received test data packet
against its local test generator. Test pass/fail
statistics are accumulated and made available
to the host.
Interface Comparison
The CoaXPress interface provides numerous benefits over current and emerging interface standards.
CXP with...
Current Standards
Future Standards
HD-SDI
3G-SDI
CoaXPress
CameraLink
GigE Vision
IEEE-1394B
Single Speed
1.25 Gbps –
6.25 Gbps
2 Gbps
(Base, 1 cable)
1 Gbps
768 Mbps
Max Speed
Nx6.25 Gbps 6 Gbps
(N Cables)
(Full, 2 cables)
2 Gbps
(2 cables)
1.6 Gbps
(2 cables)
Link Cost
Medium
Medium
Medium/High
Low
Medium
High
Medium
Low(?)
Complexity
Medium
Low
High
Medium
Medium
High
Medium
Low
Cabling
Coax
Custom
Multi-core
Cat-6
Complex, mass
produced
Coax
Cat-6/a/7
CX-4
Complex, but mass
produced
Max Length
130m/40m
10m/7m
100m
4.5m
130m/100m
37m/100m/100m 15m
3m
Data Integrity
CRC
None
CRC/Resend
CRC
CRC
CRC/Resend
CRC/Resend
CRC
Real Time
Trigger
Yes
Yes
No
No
No
No/planned
Yes
No
Power over
Cable
13W/cable
PocL:4W
PoE:13W
45W
No
Planned
No/Planned
Yes
Spring 2012
|
Issue 01
10 GigEVision
HS Link
USB-3
1.45 Gbps
(HD-SDI)
10 Gbps
3.125 Gbps
5 Gbps
2.9 Gbps
(3G-SDI)
30 Gbps
Nx3.125 Gbps
5 Gbps
Machine Vision 3
SENSORS/AUTOMATION
The latest generation of VeriSens®
vision sensors from Baumer sets
new standards of operating
simplicity and dependability.
Three new ranges of VeriSens® provide
optimal solutions for various applications
in automation systems.
The ID Series vision sensors reliably solve
industrial identification and imprint control
tasks. The VeriSens® ID-100 reads all
standard 1D/2D and GS1 codes and is
therefore ideally suitable for controlling
production sequences. The VeriSens®
ID-110 additionally enables text and date
parameters to be checked for correctness
and legibility (OCR/OCV).
Check and sort tasks for quality control
purposes are particularly easy to solve with
the VeriSens® CS-100 of the CS Series.
For example, it provides 5 digital outputs
which enables it to check components
for various characteristics and sort them
directly without external PLC requirements.
VeriSens
®
A new generation of
intuitive configuration
The new FEXLoc® technology guarantees
reliable 360° position tracking of variable
component positions.
The XF Series has the high performance
of a vision system but is as easy to use as a
vision sensor. The extensive functions of the
VeriSens® XF-100 and XF-200 make it
possible, for instance, to validate component
geometries, locate parts or check the form,
content and correct labeling of packaging.
All VeriSens® vision sensors of the
new generation are integrated into an
industrially robust metal housing of the IP67
protection class and achieve high production
rates by performing up to 3000 evaluations
per minute.
The uniform, intuitive
operating software and
extremely simple
integration of the new
VeriSens® series permit
flexible operation during
changing requirements
and applications.
4
Machine Vision
www.lambdaphoto.co.uk
MICROSCOPES
Advanced Digital &
Video Microscopes
Scalar is the world leader in Touch & View portable digital microscopes,
perfect for use in industry, cosmetics, medicine and education.
AirMicro – the first wireless digital
microscope made for the iPad, iPhone or iPod Touch
AirMicro is a fast, easy to use handheld
portable digital microscope that connects
via a Wi-Fi network to an Apple iPhone,
iPad or iPod touch. It can provide up to
400x magnification and allows the user to
view live images, freeze and capture them
to the Photo album of the device.
AirMicro is widely used in industry R&D,
forensics, clinics, education and
manufacturing quality control worldwide.
AirMicro can also be used in conjunction
with programs like Skype™ or iChat™ to
show colleagues what your AirMicro is
seeing in real time over the internet. The
package also includes software for
Windows and Mac which will capture stills,
video and time lapse. An SDK is also
available for developers.
The free AirMicro app, available from the
iTunes store, enables you to connect your
iOS device quickly and easily to the
AirMicro and to view live high resolution
images of a sample. Further, the Mytech
app, also available from the iTunes store,
enables a side-by-side comparison of two
images, full screen function and an
annotation to mark and place notes on
images.
Mole
Connect via Wi-Fi to an iPhone,
iPad or iPod touch
Up to 400x magnification
Fast & easy to use
For use in the lab, office, clinic
or home
View & store live images.
Hair
iPhone, iPad, iPod touch and iOS are trademarks of Apple Inc
Dog paw pad
Portable Digital Microscope (DG-3x)
the gold standard in hand-held video microscopy
The DG-3x is an extremely portable digital
microscope, which is the ideal choice for
QA and R&D applications. DG-3x is
powerful, robust and easy to use and its
high resolution 2.3 MP CCD captures sharp
detailed images under any conditions.
3.5” built-in full colour display
Up to 1000x magnification
Fast & easy to use
For use on the production line,
R&D or lab
Modular system with a range
of attachments
The 3.5” full colour TFT LCD brightness
has increased by 30% over the previous
model and provides scale and magnification
information directly to the user. By using
the 7 additional scales (with Grid Editor
software), you can confirm quality
Spring 2012
|
Issue 01
acceptance/rejection criteria and size of a
part, quickly and easily.
With the DG-3x Touch and View feature,
just touch the lens to the object and you
can take a picture immediately. Focussing on
the DG-3x is extremely easy and userfriendly. You can confirm focus by zooming
the image on the monitor temporarily
before you push the shutter. A focus
indicator shows the adjustment condition
of the focus ensuring anyone can shoot a
vivid image easily.
Images can be stored as jpegs on the
removable CF card. You can then easily
transfer your images to your PC for analysis
and printing. Connect your DG-3x to an
external TV monitor and show your
colleagues live high magnification images, or
alternatively by connecting your DG-3x to a
DVD recorder you can record high
magnification movies.
Machine Vision 5
ILLUMINATION
Highest performance for superior demand:
SCHOTT KL2500 LED Light Source
The KL 2500 LED delivers equivalent light output to a 250-watt halogen lamp, in fact more than
1,000 Lumens out of a 9 Millimeter diameter fibre bundle.
During long periods of use in automated
processes, the KL 2500 LED is cost efficient
due to its outstanding price/performance
ratio. The brightness and shutter function can
be set on a PC and controlled with the help
of individual software.
As a result of rising cost pressures and high
volumes of samples in the laboratory sector,
halogen light sources are gradually being
replaced by energy-efficient high-performance
LED technology, and processes like
stereomicroscopy are being automated.
SCHOTT has expanded its successful KL LED
series to include a system that can be easily
integrated into existing infrastructures to
confront these challenges.
The new KL 2500 LED light source is PC
controllable via USB interface. It features an
electronic shutter and ripple free DC
illumination. The brightness can be set at
three different increment values: fine,
standard or coarse. An LCD display indicates
the brightness setting or operating mode.
The product also features a connection for a
foot switch and remote control.
SCHOTT uses LEDs that produce neutral
white light with a color temperature of
approximately 5,600 Kelvin. Unlike halogen
systems, this means there are no more
annoying changes in the color temperature of
the light during dimming. Daylight filters are
also no longer necessary. The appropriate
type of halogen filter is also available for users
who prefer halogen light that approximates a
warm white shade.
Because these new devices use the same
proven fibre optic interface used in halogen
light sources, only the light source needs to
be replaced. This means customers are able
to continue using their existing fibre optic
light guides. These devices are equipped with
universal power supplies to ensure that they
can be used throughout the world without
any limitations.
The LEDs have a service life of 50,000
hours or 1,000 times that of a halogen light
bulb, an aspect that translates into less
downtime. Furthermore, LED technology
allows for energy savings of around 75%,
significantly lowering operating costs. Because
of its high light output and special features,
its use in life science and industrial
applications of stereo microscopy and
macroscopy is especially important.
6
Machine Vision
Free lighting evaluation kit
Choosing the correct lighting for
your machine vision application
can be difficult.
To help you find the best lighting solution,
we can supply you with our Evaluation
Lighting Kit for a 4 week period at no cost.
If you order any of the lighting items then
you keep the lighting kit for a further 4
week period. The Lighting Evaluation Kit is
supplied with either Red or White lights
along with a controller/lab tester and is
delivered in a compact carry case.
Lighting Evaluation Kit Contents:
Part
Description
Dimensions
Colour
PAD8 1012
Demo controller/laboratory tester
NA
NA
AD
AC/DC Converter
NA
NA
SAX3 1102
Ring light
outer Ø 102
Red/White
SAX3 2102
Dome light
outer Ø 102
Red/White
SAX3 4103
Dark field
outer Ø 103
Red/White
SAH4 2122
Line light
122mm length
Red
SAW4 2086
Line light
86mm length
White
SAX5 1011
Front light
56 x 80 x 15mm
Red/White
SAX7 0802
Back light
63 x 84 x 30mm
Red/White
SAX9 2525
Coaxial light
25 x 25mm
Red/White
Phone 01582 764334 today for your free evaluation kit.
www.lambdaphoto.co.uk
ACQUISITION
Frame Link Express –
camera link made easy
Four Easy Steps:
After you have installed the application files,
FrameLink Express card and drivers.
1) Connect ANY Camera Link Camera to
the FrameLink Express Card
2) Open FrameLink Express Application
3) Open Camera Parameters and click
on “learn”
4) Click “Start Grab”... an image will now
be displayed!!
The success of the FrameLink and
VCE series of PCMCIA frame
grabbers has positioned Imperx as
the world leading supplier of frame
grabbers for laptops (desktop PCIe
version also available).
Lambda Photometrics can now offer the new
FrameLink Express – a CameraLink frame
grabber designed especially for ExpressCard
laptops. The card can acquire and display
images from two independent Camera Link
Base camera in easy steps. A full software
suite, including drivers, C/C++ SDK, and an
application program, is provided with the card.
Auto-Learn
Feature unique to Imperx FrameLink
Express frame grabber
Simplifies CAM file creation
Automatically ‘learns’ camera parameters
by measuring Camera Link signals
HARDWARE
StreamPix
Station 625/1250
NorPix is the leading developer of Digital Video Recording Software and Solutions for high
speed video recording using either single or multiple cameras. The new high speed recording
station is now available from Lambda Photometrics. The popular StreamPix and TroublePix
software operate at their best using state of the art StreamPix Station 625 and 1250
computers. These fine tuned computers are assembled with carefully selected components
that will guarantee ultimate performance as well as image recording for hours with a no frame
drop guarantee.
StreamPix Stations are available as desktop or compact desk systems, rack mount units or
portable lunch box types. Single or multiple camera recording and playback can be handled
with these workstations.
Spring 2012
|
Issue 01
Among the supported cameras:
Baumer HX 13
Basler A504K, A504KC,
A406K, A406KC
Mikrotron MC1310, MC1311,
MC1362, MC1363
Photon Focus MV2-D1280-640,
VDS CMC-1300
Optronis CL600x2
IDT M3
Machine Vision 7
OPTICS
Navitar SWIR Lenses
Navitar’s fixed focal length SWIR hyperspectral lenses are
designed for short-wave infrared cameras and applications.
Offering high resolution images in conditions
ranging from bright daylight to dusk.
Common applications include security,
wafer inspection, perimeter surveillance,
biometrics, aerial imaging and food sorting.
Navitar currently manufactures standard and
OptiStar® SWIR lenses.
Standard fixed focal length SWIR
hyperspectral lenses are constructed for
rugged environments, and are available in
25mm, 35mm, and 50mm focal lengths.
The lenses are designed to cover 1” (16mm
diagonal) sensors, and offer high resolution
images and transmission of 75% or better
in the 700 – 1900nm. Navitar’s OptiStar®
SWIR lenses function in the wavelengths
from 500 – 1700nm, with 90% +/- 5%
transmission across the range.
The lenses are available with manual
or auto iris, and are ideal for dark or
nighttime applications.
The new Carl Zeiss
high speed lens
Distagon T* 2/25 ZF 2
Distagon T* 1.4/35 ZF 2
The ZF lenses from Carl Zeiss are compatible with all F-mount cameras,
the F-mount is a common standard for high-resolution industrial cameras
with large sensors.
As a result of its large image circle, our lenses are ideal for the growing importance of highresolution image sensors and larger sensor formats in industry and research. These compact
and robust lenses are used widely for industrial machine vision thanks to their reliability and
excellent image performance. Aerospace, land measurement and traffic management systems
are three additional sectors in which Carl Zeiss lenses are often used.
The new high speed Distagon T* 1.4/35 available from Lambda Photometrics, is an example
of one lens that is in particularly high demand in the industrial sector. It creates crisp, sharp
images even in difficult lighting conditions. Thanks to its large focus ring and precise wormgear, the lens enables accurate, sharp pictures to be taken even at maximum aperture
opening. The lens’ optical construction also guarantees a high image quality across the entire
image range. Another lens suitable for industry and research is the new high speed Distagon
T* 2/25, a moderate wide-angle lens. It shows its strengths especially with fast-moving objects
or in tough lighting situations, as is often the case in the industrial sector. The Distagon T*
2/25 also stands out for its excellent colour correction.
e: [email protected] or [email protected]
Lambda Photometrics Limited, Lambda House, Batford Mill, Harpenden, Herts AL5 5BZ
T: +44 (0) 1582 764334
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