One key driver to the continued development of digital menu boards is the placing of large screens either outdoors or in environments where there is a high degree of incident artificial light. When light shines on the screen, the quality of light produced by the device and emitted via the screen is compromised. Furthermore, excessive light negatively affects contrast meaning that the angle from which the images can be visualised is reduced. Finally, the images themselves are degraded, become fuzzy and are characterised by reduced clarity and depth of colour. Sunlight amplifies these effects in the following ways:
Visible light:
That part of the electromagnetic spectrum from which we as human beings visually interpret the world around us. It extends from the infra-red (0.4 microns wavelength) to ultraviolet (0.7 microns wavelength); one micron is 1/1000th of a millimetre. Incident visible light reduces clarity of colour, possible viewing angles and contrast between shades and colours
Ultraviolet light:
High energy light waves which degrade the LCD surface itself by inducing colour changes characterised by a yellow or grey hue on the images produced on the screen.
Infra-Red:
Lower energy light waves more recognisable as heat that can cause devices to overheat and so reduce their useful life span. Image quality is reduced because a grey striped effect is produce when images are viewed
Why the need for sunlight readable screens:
As the portability of devices has increased in conjunction with increased outdoor screen use in general the need for sunlight readable monitors became obviously apparent. Sunlight readable screens have been developed because hardware that is not only durable but also able to produce light in such a way that counteracts the above negative effects became a necessity.
High brightness screens are designed to emit more light than other machines in the same class. Such that they may have the same design specifications (as non-high brightness monitor) but are built to be used outside or in certain environments that are exposed to a particular range of light wavelengths.
Sunlight readable screens and digital signage
High brightness monitors and the devices they are attached to are much more durable than most equivalent models aimed at the consumer market. They are also becoming more intertwined with digital signage technology. Sunlight readable monitors emit up to three times as much light as their equivalent non-sunlight readable counterparts, overcoming the above problems.
These monitors also have a much wider viewing angle, which is going to be essential in most external environments; in summary more people will see the display on the screen. This has been achieved without significant increases in consumption of electrical energy, which is still derived mainly from non-renewable sources. In addition, new legislation in many countries prohibits the use of certain substances such as mercury in the manufacture of these devices.
Overall, the clarity and brightness offered by sunlight readable screens has been achieved without compromising on functionality and economy. It is true that such screens are currently more expensive than their non-sunlight readable equivalent, but this cost is steadily reducing as the applications of the technology continue to expand.
www.pixelution.co.uk
Visible light:
That part of the electromagnetic spectrum from which we as human beings visually interpret the world around us. It extends from the infra-red (0.4 microns wavelength) to ultraviolet (0.7 microns wavelength); one micron is 1/1000th of a millimetre. Incident visible light reduces clarity of colour, possible viewing angles and contrast between shades and colours
Ultraviolet light:
High energy light waves which degrade the LCD surface itself by inducing colour changes characterised by a yellow or grey hue on the images produced on the screen.
Infra-Red:
Lower energy light waves more recognisable as heat that can cause devices to overheat and so reduce their useful life span. Image quality is reduced because a grey striped effect is produce when images are viewed
Why the need for sunlight readable screens:
As the portability of devices has increased in conjunction with increased outdoor screen use in general the need for sunlight readable monitors became obviously apparent. Sunlight readable screens have been developed because hardware that is not only durable but also able to produce light in such a way that counteracts the above negative effects became a necessity.
High brightness screens are designed to emit more light than other machines in the same class. Such that they may have the same design specifications (as non-high brightness monitor) but are built to be used outside or in certain environments that are exposed to a particular range of light wavelengths.
Sunlight readable screens and digital signage
High brightness monitors and the devices they are attached to are much more durable than most equivalent models aimed at the consumer market. They are also becoming more intertwined with digital signage technology. Sunlight readable monitors emit up to three times as much light as their equivalent non-sunlight readable counterparts, overcoming the above problems.
These monitors also have a much wider viewing angle, which is going to be essential in most external environments; in summary more people will see the display on the screen. This has been achieved without significant increases in consumption of electrical energy, which is still derived mainly from non-renewable sources. In addition, new legislation in many countries prohibits the use of certain substances such as mercury in the manufacture of these devices.
Overall, the clarity and brightness offered by sunlight readable screens has been achieved without compromising on functionality and economy. It is true that such screens are currently more expensive than their non-sunlight readable equivalent, but this cost is steadily reducing as the applications of the technology continue to expand.
www.pixelution.co.uk