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<p>The purpose of machine vision illumination is to control how the object appears
to the camera. Firstsight Vision supply <font color="#000000">a range of flexible
lighting solutions, including sources, guides and illuminators. The light sources
include Xenon strobe and arc lamps as well as computer controlled DC regulated
Halogen sources.Choices of standard and custom light guides are available with
PVC, steel and high temperature sheaths and quartz, plastic and glass fibre
bundles. Different lighting techniques can be implemented using appropriate
illuminators. These include ring lights, back lights, dark field illuminators,
slit guides, co-axial camera lenses, diffuse lighting adapters and microscope
adapters.</font></p>
<p>In machine vision applications the importance of illumination is almost always
underestimated. Specialist illumination is sophisticated and there is science
to understanding how and why a certain type of illumination is suited to an
application.</p>
<blockquote>
<p>When selecting illumination products:<br>
1. Identify the most suitable technology (LED, fluorescent or fibre optic
and laser)<br>
2. Choose a suitable illumination technique & choose a product<br>
3. Choose the corresponding power supply / light source</p>
<p> </p>
</blockquote>
<p><a href="http://stemmer-imaging.co.uk/pages/system/plugin.php?item=10">LED Lighting</a></p>
<p><a href="http://stemmer-imaging.co.uk/pages/system/plugin.php?item=10">Fluorescent Products</a></p>
<p><a href="http://stemmer-imaging.co.uk/pages/system/plugin.php?item=10">Fibre Optic Products</a></p>
<p><a href="http://stemmer-imaging.co.uk/pages/system/plugin.php?item=10">Laser Products</a></p>
<p><font size="3"><b><font size="4">Maxlites, Continuous Diffuse Illuminators
(CDI)™</font></b></font></p>
<p>A combination light, comprising on-axis technology and a small dark-field ringlight.
Can be used for applications<br>
requiring 2 different techniques.</p>
<p><font size="3"><b><font size="4">Continuous Diffuse Illuminators (CDI)™</font></b></font></p>
<p>The highest level illumination performance available. It has been designed
for the most difficult applications and combines off-axis spherical reflected
light and on-axis<br>
light to provide light incident from all angles. This illuminator is sometimes
referred to as 'Cloudy Day'. Available in a variety of sizes and types.</p>
<p><font size="3"><b><font size="4">Micro Ringlights</font></b></font></p>
<p>A special variety of miniature ringlight, usually used in combination with
remote (micro) head cameras. Available in various sizes and types.</p>
<p><font size="4"><b>On-Axis Illuminators</b></font></p>
<p>These illuminators are used for illuminating reflective objects. They use a
beam splitter to eliminate the reflection of the camera lens or the illuminator
itself in the resulting </p>
<h3>Spot Illuminators</h3>
<p>A very simple, general purpose illuminator. Provides light from a specific
direction onto the field of view. The light direction is dependent on mounting
position and may be used as a bright-field illuminator for diffuse surfaces,
as a dark-field illuminator (creating shadows and specular reflection) or as
a small backlight (when mounted behind the part). Available in a number of colours
and formats. </p>
<p><a href="http://stemmer-imaging.co.uk/pages/system/plugin.php?item=10">lasers</a> <a href="illumination/led_home.html">LED</a>
<a href="http://stemmer-imaging.co.uk/pages/system/plugin.php?item=10">Fibre Optic</a> <a href="http://stemmer-imaging.co.uk/pages/system/plugin.php?item=10">Fluorescence</a>
</p>
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