the R200 V
line of reflectometers can be configured to measure percent Reflectance
at any of many fixed wavelengths in the near-ultraviolet, violet, blue,
green, yellow, orange, red, or infrared regions of the spectrum (either
narrow band or broad band as requested at time of purchase).
also offer systems which employ white light sources-- thus permitting the
insertion of a filter to inspect any region of the visible spectrum.
Typical accuracy of +/-0.2 % is achieved.
need to operate the instrument in a darkened room!
instruments all feature an electronically chopped test beam for maximum
accuracy and independence from ambient lighting conditions. They
are easy to use, stable in operation, and provide highly reproducible readings
and ULTRAVIOLET Reflectometers
also offer reflectometers in both infrared and ultraviolet . Please
inquire for specific wavelengths required. Listed below are some
of the features and benefits provided by the Model R200V Reflectometer
or Narrow-band Filters may be selected by customer at time of purchase
optimized for specular or diffuse reflectance
choice at time of purchase
samples are: glass, silicon wafers, reflective or anti reflective coatings,
paper, painted surfaces, matte finished surfaces, etc.
measurements takes at normal incidence
small errors which arise when incident beam is at a small angle to the
or multiple channel versions
measurements of Transmittance at several wavelengths in the infrared, the
visible spectrum, and the ultraviolet.
diameter 10.0 mm
may be selected at time of purchase
size 6" x 6" Maximum
inspection to center of 12 inch wide sample
thickness accommodated 1.0 inch
for thicker samples can be provided
connection to data logger or chart recorder
Standard provided for calibration
specular or diffuse reflectance
Time 20 minutes
stable operation throughout the workday
Digit Readout (LED or LCD)
accuracy of 0.2%
(W x D x H) 10.2 x 10 x 4 inches
Approximately 10 pounds (4.5 kg)
to accommodate wide range of special requirements to suit customer's application.
Volts 60 Hz 2.0 Amps or
Volts 50 Hz 2.0 Amps
Parts and Labor
design and operation
instruments are similar in appearance to that shown in the photograph.
Some features may vary with model. Potential customers are encouraged
to inquire about any special features which may be needed for their application.
A number of customized modifications are available at little additional
operation, the instrument is set to read 0% reflectance by closing an aperture
which isolates the light source from the detector. Then, using a
reflectance standard appropriate to the customer's application, the reflectance
reading is set to the specified level. Thereafter readings of reflectance
are shown directly on the 4-1/2 digit LCD or LED display.
a detailed description of operation click on the link: Measuring
Reflectance with the Model R200V
For Further Information, call Gordon Graham today at (818) 700-1263
Optical Systems, 9530 Topanga Canyon Blvd., Chatsworth, CA
© 2014 Graham Optical Systems All Rights Reserved
page last updated November 15, 2014