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Optolite optical grade acrylic contrast enhancement filters have been specifically formulated
by Instrument Plastics Ltd to optimise
the readability of electronic displays under adverse conditions
by enhancing contrast and reducing glare whilst improving the appearance
of the display.
Services Offered
• Advice on selection and design of filters
• Samples available on request
• Range of standard colours to suit most display applications
• Choice of standard thicknesses 0.5, 1, 1.5, 2, 3mm
• Selected range of Non Glare finishes
• Preparation of artwork, photography and silk screening
• Competitive prices
• Fabrication to individual requirements, from one-off prototypes
to full production
• Rapid delivery
Other Optolite Products
• Flat or curved screens for CRTs with
optional bezels
• Shielded windows for EMC/RFI protection
• Infrared filters
• Diffusers for point light sources and back lit LCDs
Also Available
• Accurately cast lenses to +/–0.1mm
thickness tolerance
• Colour matching to customer requirements
• Non standard thicknesses
Instrument Plastics Ltd are able to
draw on wide expertise and are pleased to advise and assist in the
design and selection of the most suitable type of filter for each
individual application.
Readability
The most important factor for all types of electronic display is
readability, which can be difficult under conditions ranging from
darkness to bright sunlight. Also, reflected light from the display
can cause further viewing difficulties.
Method of Operation
Optolite optical grade filters have been developed to overcome these
problems. Readability is improved by increasing the relative contrast
between the lit and unlit parts of the display. Band pass filters
increase contrast by passing the wavelengths of light from the display
whist partially absorbing other wavelengths of ambient light. Selected
optolite colours are available which are matched to the transmission
characteristics of the display.
Factors to Consider
When matching optolite filters to particular displays to obtain
optimum contrast, careful consideration should be given to the transmission
curve, shape, attenuation at peak wavelength, wavelength cut off
and front surface reflectance. The design needs to consider aesthetics
as the appearance of the finished product should also be enhanced.
Optolite filters provide the most cost-effective answer to display
improvement where the performance of a circular polariser may be
partially traded off against price.
Non Glare Finishes
Optolite filters are available with various grades of optional cast-in
non-glare finishes. They are manufactured to customer specifications
to produce either filters or display panels. The cast-in finish
offers advantages in that it cannot chip, peel or rub off.
+ Filter depends on CRT Phosphor
Thickness: 0.5, 1, 1.5, 2, 3mm
Non Glare Finishes (Gloss Levels,
Relative Reflectance)
NG Grade M - 30 units
NG Grade F - 50 units
Instrument Plastics Limited has a policy of
continual improvement of products and so reserves the right to change
the product specification without notice.
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