|
|
| |
|
"A Place in the Sun" - Optical Environments
|
Most computer users have experienced viewing problems caused by direct
sunlight, even for office computer users. The indoor user has options to shade
or change the computer's position to lessen the effects of sunlight and
reflections, thereby improving the readability of the display. In many
vehicles this is not an option as direct sunlight or reflections are nearly
impossible to avoid.
Designers of mobile computers struggle with the trade-offs between daylight
requirements and power/heat consumption of the unit. In addition, the display
must offer a wide viewing angle and good clarity both in direct sunlight and in
complete darkness.
Viewing from a Small Angle is Crucial in Order to Look Good
Wide viewing angles and significant
increases in backlight technology have helped us make some of the best "daylight
viewable" displays in the industry. Brightness levels are 2 to 3 times higher
than standard laptop computers.
A wide viewing angle is important in many applications such
as public safety, information kiosks, machine guidance and medicine. Certain
applications require several people to view the screen at once, making a wide
viewing angle crucial. Viewing angles for our screens are normally 120 degrees
from left to right and 80 degrees viewing angles from top to bottom.
Night and day
Anti-reflective filters and high brightness backlighting makes our computers ideal for outdoor use.
Direct sunlight and high or low ambient lighting is not a problem. We can
incorporate trans-reflective technology into our computers resulting in "the
stronger the light, the brighter the image". These screens use reflected light
in bright environments and transmissive backlighting in dark environments.
Dim-ability
Another difficult task in display control is dimming because it is
very difficult to obtain even brightness levels in all dimming levels across a
display. This is the reason why many other computers have only one or two levels
of dimming capability. The JLT solution supports dimming with 64 levels of
luminance from complete dark to full brightness.
| Technical Data |
| Luminance |
Typically 400 NIT |
| Luminance (high brightness) |
Min 750 NIT |
| Contrast Ratio |
Typically 300:1 |
| Dim-ability |
Typically 100% - 0% |
| Viewing Angle L/R |
Typically 120 Degree |
| Viewing Angle U/D |
Typically 80 Degree |
| |
|
|
|
|
|
|