Opto-Elektronik für alle Anwendungen von Infratron

In a film just three quarters of a millimetre thick, hundreds of tiny louvres control the direction of emitted light and viewing angles, blocking the transmission of spurious light.

• Reduces glare and reflection and improves contrast
• Affords Privacy for sensitive information
• Reduces sunlight washout

Solve the privacy problem
Wherever the open display of confidential or sensitive information on VDU's create a security problem, specify Light Control Film.

• Aus HSR
• 0,5mm - 2mm dick
• Lichdurchlässigkeit in 12 Stufen von 40% bis 87% einstellbar
• Gleichmäßige Diffusion
• Hohe Lichtausbeute
• Auch in Farb-Ausführung
• Verhindert Interferenzen

• Aus Acryl oder HSR
• Transparent oberhalb 780nm
• Blockiert sichtbares Licht
• Auch mit Entspiegelung

• Basis-Materialien von 3M
• Kundenspezifische Anwendungen
• Auch als Kombi-Lösung mit anderen Applikationen

Optolite™ Backlights are available as custom design displays.
With high brightness + low current they give even illumination.
Instrument Plastics Ltd offers a custom service in LED
backlight design with the following benefits:

• • Low cost
• • High brightness
• • Low current
• • Even illumination
• • Design flexibility

Optolite Clear HSR optical grade filters offer a robust, high temperature, high scratch and impact resistant
material. It is especially suited to LCD’s and other display applications where these characteristics are of a
particular importance.
LCD’s often suffer from a number of problems:
• Soft front surface polariser
– can be subject to damage from scratching, dirt, moisture, finger marks, etc.
• Front surface reflections
– in certain lighting conditions these may cause display reading difficulties
• Restricted viewing angles
– caused by LCD construction and method of operating
• Possible Ultra Violet degradation in strong sunlight
• Shielding from electromagnetic interference
• Sourcing of bezels
– not always possible or feasible with so many different LCD sizes available

Optolite optical grade acrylic 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

A range of contrast enhancement filter windows, with Optolite™ IPL 650 Plum.
This colour has been specially formulated to enhance the appearance of green VFD displays by
transforming the green characters into white with the background remaining black.

Features include:

• Available with a standard or non-glare finish
• Choice of thicknesses from 0.5, 1.0, 1.5, 2.0, 3.0mm PLUS special thicknesses available on request
• Fabrication to individual requirements from one-off prototypes to full production
• Preparation of artwork & silk screen printing
• Shielded EMI/RFI versions available

Optolite IR (infra red) broad band acrylic filters have been specially formulated to transmit infra red
radiation at wavelengths greater than approximately 750nm and are thereby virtually opaque to visible
light.
Optolite IR (infra red) is eminently suitable for use in photometric systems which are triggered by near
infra red signals but which must operate in environments with high levels of visible radiation. Optolite IR
(infra red) eliminates the visible spectrum and so improves the effectiveness of the system by increasing
the signal-to-noise ratio.
Specific applications include remote controls, security systems, presence sensing devices, proximity
sensors and scanners.

Features include:

• Excellent Transmittance up to a maximum of approximately 90% in the infra red region from 850nm – 2000nm, 50% transmission at 780nm and effectively 0% below 740nm in the visible spectrum
• Cast-in Non-Glare Finish available as an option to cut down any unwanted front surface reflections
• Filters supplied to Customer Drawings in standard thicknesses of 0.5, 1.0, 1.5, 2.0, 3.0mm
• Other, non-standard thicknesses and tight tolerances can be supplied to order.

Optolite™ Light Diffusion Filters offer good light transmission with a uniform light diffusion.

Features include:

• Excellent light diffusion
• Prevents interference fringes
• Good chemical resistance
• Special thicknesses 0.5 – 2.0mm available
• CNC machining & silk screen printing to customers requirements
• Colour’s available on request

In outdoor applications in direct sunlight Optolite™ U.V. filters block harmful ultra violet rays and protect the sensitive LCD from blackening, fogging or malfunction.
The (U.V.) blocking material is available in all our product range.
This includes Optolite Clear HSR, Optolite Contrast Enhancement Acrylic Filters and in Optolite EMC/RFI Shielded Filters. With Optolite Ultra Violet (U.V.) Filters, we are able to offer complete protection for the harsh environments in which some LCD displays are used.
Instruments that are used for cable detection of services below the pavements and streets are left in direct sunlight for long periods.
The ultra violet (U.V.) and infrared (I.R.) rays from the sun will overheat the sensitive LCD display.
By incorporating Optolite Ultra Violet (U.V.) blocking and an Infrared (I.R.) reflector, this prevents the diplay from malfunctioning. Instrument Plastics Limited has a policy of continual improvement of products and so reserve the right to change the product specification without notice.

A circular polariser comprises a linear polariser and a 1/4 wave retarder whose slow and fast axes are at
45° to the axis of the polariser. A ray of unpolarised light, passing through the linear polariser, becomes
polarised at 45° to the axis of the retarder. When this polarised light ray passes through the retarder its
vibration direction is made to move in a helical pattern. After the light ray is reflected from a specular
surface the sense of rotation of the vibration reverses. This rotation is stopped in the return through the
retarder. The light ray is now linearly polarised in a plane 90° to its original polarisation plane, and is
absorbed by the linearly polarised component of the circular polariser. A circular polariser effectively acts
like a light valve blocking light completely and therefore offers the ultimate in contrast enhancement.

Synthetic Linear polarising filters (polarisers) possess special properties for selectively absorbing light
vibrations in certain planes. When unpolarised light, which is a complex mixture of vibrations lying in all
possible directions transverse to the line of travel, is passed through a linear polariser its vibrations
become confined to a single linear plane and the light is considered “polarised”. This linearly polarised
light can be modified to suppress unwanted reflections and to eliminate glare for a variety of applications.