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Customer Webinar
Emerging Technologies and the Benefits for Your Business
June 5th, 2015
digital-watchdog.com
Today’s Presenters
Ian Johnston
Chief Technology Officer, Digital Watchdog
Chief Executive Officer,
Corey Markell
Regional Sales Manager Eastern North America
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Please Also Attend: Digital Watchdog Technical Webinars
The next webinar is Friday June 12th, at 8:30 a.m. PDT.
Our Director of Education Programs, Paul Krofssik, will take your
questions and will provide real world information to make installer’s
work easier in the field.
Register at www.digital-watchdog.com/news/calendar/.
The webinars are a maximum of 60 minutes long and will appeal to all
levels of Digital Watchdog technicians and consultants.
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Let’s trip the light fantastic!
Rev : 01/15
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Who is Raytec…
Global Company - Designed and Manufactured in the UK
Around since 2005
100 years of CCTV lighting experience
World’s largest provider of LED lighting to the Video Surveillance Industry
A comprehensive range of over 600 products (HV, LV, PoE)
Most versatile products - Adaptive Illumination™ and Vario
All the benefits of the latest cutting edge LED technology
Industry leading customer support
5 Year Warranty
Warehouse in Lake Forest California
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What is Light anyway?
The chart on the right looks a bit overwhelming, but it’s
actually pretty simple.
Every time you look at a beautiful color, every X-Ray you
get when you get your teeth cleaned, every time you
watch TV or use your WiFi at home, you are interacting
with the “electromagnetic spectrum”.
Humans can only see the wee bit in the middle, however.
Cameras on the other hand can see a little bit more and
can see into the “near infrared” spectrum (infra means
“below” red).
To find flowers, Insects have developed the ability to see
further into the Ultra Violet. These same UV rays also
give us that nasty sunburn while we lay out on the beach.
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Oooh.. Rainbows…
We can actually see the entire visible spectrum through a
rainbow after it rains. As sunlight streams down through tiny
water droplets in the air, it makes the sunlight ‘refract’.
The light is spread out, from longer wavelengths (red) to
shorter wavelengths (violet). That’s exactly what you see in
the rainbow.
Color in this case is expressed in “wavelengths”, red being
around 700 nanometers and Violet is less than 400nm.
The picture of the dandelion on the left is what humans can
see, bees see it completely differently as ‘seen’ on the right.
Cameras and film are sensitive to Infrared Light and like
bees, can let us see the world in a whole new perspective.
digital-watchdog.com
Infrared Photography… Very cool
The photo on the right was taken only looking at the infrared
spectrum of light (longer than 800 nanometers).
Trees look very strange when viewed at these wavelengths.
Leaves usually look ‘red’ and the sky is very dark.
All digital cameras need to use an IR blocking filter during
the day if we want to see colors normally.
If your CCTV camera has a “true day|night IR cut filter”, it
can switch this filter in and out, letting more light in at night,
but letting you see normal colors during the day. Starlight
and moon light has a fair amount of IR light in it, so letting it
all in makes the image much brighter.
IR cut filters, on rare occasions get ‘stuck’ so if you see trees
looking red, you now know why.
digital-watchdog.com
Ok… I get it, can we get on to illumination now?
Illuminators are like flashlights. They shine light on things
they’re pointed at so you can see better.
It turns out that humans can actually see a tiny bit of the
near infrared. If you’ve ever walked past a camera with IR
LED’s at night and can just make out a dull red glow,
they’re actually going full blast.
Criminals can see this red glow too. This can be a good
850nm vs. 940nm (covert)
thing as people know they’re being watched. For military
applications, they of course like to be more stealthy so
“covert” illuminators are used. At 940nm, they are
completely invisible to humans, so there’s no red glow.
Camera sensors also have a hard time seeing that far into
the infrared, so the brightness can really drop off.
940
digital-watchdog.com
Ok… Flashlights… I get that, what about just using White Light?
Depending on the situation, you may want to use a
White-Light
Infrared Light
white light illuminator.
White light adds extra detail including the natural
color of hair, skin tone, color of the vehicle, color of
clothing, patterns/logos.
Achieving a good contrast under IR is important to
detect a good level of detail on scene.
There are trade-offs however, so you need to pick
the type of light that is best for your application.
White light can be very useful when capturing bad
behavior in the act, but it also causes light pollution
which can be illegal, or inconsiderate in some
locations.
digital-watchdog.com
Sometimes visible light is a distraction…
Depending on the situation, and if your camera
allows for it, you can block ALL visible light and
ONLY look at the IR light.
There is PLENTY of IR light during the day, and an
IR Illuminator can be used (both day or night) to
light up license plates.
License Plates in particular are very reflective for
IR, making them brilliantly stand out.
Using a properly configured illuminator both day
and night means you’re always looking at the same
exposure, so it’s easy for software to find the
interesting bits.
digital-watchdog.com
Does IR light mean Thermal Imaging?
Thermal imaging is able to see Long Wave Infrared radiation
to ‘see’ humans and other warm objects like cars and
animals. It doesn’t require an illuminator. Our body heat
actually makes us ‘glow’ at 8,000-15,000nm.
This is very the same effect when an iron in the fire glows
‘red’ hot. It’s actually glowing at 700-800 nm, where we can
see it.
Thermal imaging is a very useful tool, but the resolution of
those imagers are usually pretty poor, so identifying what is
being seen can be very difficult.
With the IR ,we can pick up details such as this is
a lady, with a quilted coat, glasses and long hair.
IR Illuminators and conventional CCTV cameras can be
used together with thermal imaging cameras to see exactly
what is being detected.
digital-watchdog.com
But my sales guy told me that this camera has wicked good low light!
Your sales guy has not steered you wrong… Modern Image
Sensors have come a LONG way for low light performance.
Real World Light on Scene
But there are limitations. The other dirty little secret in the
industry is that LUX meters, do NOT usually report IR light,
so it is hard to know just how “good” that LUX rating really is.
Modern image sensors have also worked hard to improve
the near IR sensitivity as well, making IR illumination that
much more effective and useful.
The other reality is things in nature aren’t usually that
reflective of visible light, so they’re even darker at night.
We all need a little help from our friends…
digital-watchdog.com
Ok, fair enough, but my camera already has IR LEDs!
On camera IR LEDS are quite useful and are now VERY
common… especially over in Asia, where even the cheapest
cameras have IR lights on them. There’s an interesting
article on IPVM.com talking about this very fact at:
http://ipvm.com/updates/2972
Again, there are limitations.
Dirt and debris on the bubble of your camera can cause the
IR light to reflect back and degrade your image quality. By
having an external illuminator, there are no reflections back
into the lens, so the image is always as clean as possible.
Onboard IR Illuminators can sometimes create hot spots as
well, since they are limited in what angles they can be
pointed at the scene.
digital-watchdog.com
Ok, sign me up! How do I make sure I get the right illuminator?
In order to configure your lighting
appropriately, you’ll need to know
a few things.
What is your distance to the
subject?
What’s is your field of view?
What type of light do you need?
(White versus IR)
Spreading out the light, you get
more coverage, but you get less
distance.
More distance means more power
digital-watchdog.com
Make sure to match the illuminator’s FOV to the camera’s FOV
If your lighting is too narrow, you get
a hot spot in the middle. Not good.
If your lighting is too wide, you waste
coverage and lose distance.
Get it just right and, not only does it
look great, but you’ll maximize your
efficiency of power used to light the
scene.
digital-watchdog.com
Things to consider when purchasing IR Illuminators…
Here are some things to ask your vendor
about IR Illuminators to make sure they’ll
continue running for a long time
Adaptive
Illumination™
Vandal
Resistant
Cool Running™
Energy Saving
SMT LED
technology
High Definition
Lighting
Is the factory ISO 9001 Certified? Warranty?
What is the IR power rating in µW/cm²? Does
the manufacture publish this number? If not
how do they back up the performance
specification?
What is the LED lifetime?
Is there a Holographic lens technology for
even light distribution (no hot spots)?
digital-watchdog.com
Wow… That’s a lot to choose from!
Vario = low voltage line
with interchangeable /
elliptical lens system
Raymax line up is a high
voltage line (psu included)
with a fixed lens system
Both lines feature single,
double and triple panel
variations to achieve
greater variety of angles
and distances
digital-watchdog.com
Ooooh… RAYMAX Panoramic… Perfect compliment to PanZilla?
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RAYMAX Panoramic Ultra. Wow… now that’s an evenly lit scene!
Panoramic image
Even illumination in
the IR Lighting allows
the digital zoom
technology to work
well so we can zoom
in and see facial
features, vehicle
• Ultra Wide 180 degree Lighting
model and even a
• Even spread of illumination
license plate
• All possible with a single IR unit
digital-watchdog.com
This all sounds great… Still seems a bit overwhelming, is there help?
Lighting Design Service
Absolutely, help is standing by.
Online Product Selector:
http://www.rayteccctv.com/products/selector/
3 Questions:
1) Distance required?
2) Field of View (or distance across)?
3) IR or White light?
Lighting Design Service
Site plans
Raytec App
• For IR and White Light Projects
• Free Service
• Full Photo-metrics and Coverage
digital-watchdog.com
Great lighting is the key to great surveillance video
It really doesn’t get much harder and better
than this image.
This is a great shot as the entire scene
evenly illuminated.
The top of the lane is roughly 600’ away.
The gate about 30’
AND ITS RAINING!
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Thank you!
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