Fluorescent Lighting FAQS
Do you offer high frequency, flicker-free illumination?
What frequencies are available with your
lighting products?
What advantages does high frequency operation
provide?
Are long set screws available for my adapters
as well as ring lights?
Can your lighting and magnifier products be
used in clean room environments?
What mounting provisions are available for your
lighting and magnifier products?
Do you have an adapter to fit my microscope or
camera lens?
Do you offer customized lighting?
What is color temperature?
What is the color temperature on your various
light products?
Do you offer Ultraviolet lamps?
What is a yellow lamp used for?
Are international plug options available?
Which products are ESD compliant?
Do you offer high frequency, flicker-free
illumination?
StockerYale's Circular Fluorescent Model 5, Model 8, Model 10, Model
13 Linear Light and Model 18 Superlight are driven at 25kHz. This
high frequency driver provides flicker-free illumination. The Model
13+ drives the lamp at approximately 90kHz.
What frequencies are available with
your lighting products?
StockerYale's Model 9 is driven at line frequencies of 60Hz in the
U.S. and 50Hz in Europe. The Model 5 & Model 8 Circular Fluorescent
Vision Illuminator, the Model 10 High Frequency Microscope Illuminator
and Model 18 Superlight products are driven at 25kHz. Our Model
13+ Steady Light has a variable intensity control and a 90kHz driver.
The Model 13 Linear Lights are also available with variable intensity
control and a 90kHz driver.
What advantages does high frequency
operation provide?
High frequency fluorescent drivers reduce operator fatigue and eye
strain when used for prolonged specimen observation. In addition,
the high frequency driver virtually eliminates flicker.
Are long set screws available for
my adapters as well as ring lights?
Yes, standard lengths are ½" and 1". StockerYale understands the
wide range of applications in which our light sources are used and
provides an easy interface to as many microscopes and camera lenses
as possible. We provide reference charts to cross our adapters to
most standard microscopes. If what you are looking for is not listed,
contact our Sales Department. They will be able to provide you with
an appropriate solution.
Can your lighting and magnifier products
be used in clean room environments?
Most clean room applications require low particle contribution from
any item placed within it. StockerYale manufactures a wide variety
of stainless steel and injection molded housings for our illumination
products that are suitable for clean room use.
What mounting provisions are available
for your lighting and magnifier products?
Adjustable bench clamp, magnetic, bolt and cast iron bases are available.
Do you have an adapter to fit my microscope
or camera lens?
StockerYale understands the wide range of applications in which
our light sources are used and provides an easy interface to as
many microscopes and camera lenses as possible. We provide reference
charts to cross our adapters to most standard microscopes. If what
you are looking for is not listed, contact our Sales Department.
They will be able to provide you with an appropriate solution.
Do you offer customized lighting?
A large portion of our business is derived from customized fluorescent
and fiber optic. Our optical, mechanical, applications engineering
and manufacturing teams are ready to assist you in creating an appropriate
lighting solution. Please contact
for your custom lighting needs.
What is color temperature?
Color temperature is a reference to the chromaticity of a theoretical
black body. When a black body is heated to a certain apparent color
of light at a dominant wavelength. The color temperature of a light
source is defined at the value of absolute temperature of the theoretical
black body where the chromaticity matches that of the light source.
What is the color temperature on your
various light products?
The quartz halogen sources used in StockerYale fiber optic illuminators
are approximately 3250K, 3400K or 4200K depending on lamp type.
It should be noted that color temperature of a tungsten source is
dependent on the voltage applied to the lamp. This equates to lower
color temperatures at lower intensity settings. If a constant color
temperature is required. It is necessary to use a variable aperture
iris or neutral density filter to vary light output.
The color temperature for the standard lamps in our linear and circular fluorescent illuminators is 5100K. Other available color temperature lamps are the 3200K, 4200K and 5500K high color rendition. These lamps are typically chosen for specific applications.
Do you offer Ultraviolet lamps?
Yes, we offer UV lamps which operate at a peak wavelength of 365nm
for our circular and linear fluorescent illuminators.
What is a yellow lamp used for?
As the peak wavelength of the yellow fluorescent bulb is 585nm,
this is used in the semiconductor industry where care must be taken
not to expose the photo-resistive materials used in microlithography.
Are international plug options
available?
Yes, standard European plug options are available on standard products.
Contact factory for all other variations.
Which products are ESD compliant?
The following products are ESD compliant: Model 9 CFMI, Model 10
HFVI, Model 13+ Steady Light and Model 20 Fiber Optic Illuminator.
In addition, ESD compliant accessories are also available.