If you have a standard laptop outdoors in the blazing sun are the chances you will not be able to much detail on the screen without turning them to see the device as little disruption as possible to sunlight. This problem makes standard-screen devices such as laptops and cell phones, impractical for use in an outdoor environment. Just as rugged Tablet PCs to bypass this problem?
It is called a measure of the brightness of NIT. A NIT is a luminance unitequal to 1 candle per square meter measured perpendicular to the rays of the source. This scientific explanation does not make much sense to a layman, but it is very useful in comparing the devices. To help you start a baseline from which standard laptop and desktop screen at around 200-250 nits. Standard Rugged tablets for use in industrial settings, warehouses, and currently with a 350 NIT display standard.
Rugged tabletsbe developed to be used in an outdoor environment, the screen readability by improving either the increase in the NIT rating on the screen or by using a polarizing filter, a 350 NIT screen. To produce these two techniques, it has direct sunlight readable screen, but both their own side effects.
Through the use of a polarized filter, a screen, you run the risk of making the device difficult to use with some branded sunglasses. If you ever physics at schoolYou may remember the experiment, if you have two polarized lenses, and turned one of them it was 90 degrees in the first lens. The result of this experiment for those of you who do not remember that far back that the light allowed through the lens, and you can not see anything. A good example of this problem by giving your iPhone to be seen (as it has a polarized screen) in a sunglass shop and see the difference between different brands of sunglasses to make the brightnessthe screen.
To increase the NIT evaluation of the device can. You will need to increase the backlight of the device and use them more power and thus the battery life of the instrument. Rugged outdoor screen are now up to 1200 nits, these devices can be really painful to read at home because they are so bright.
The last thing to consider is the contrast ratio. Although a display with less than 500 cd / m² brightness of the screenand only 2 to 1 contrast ratio can be read outdoors. A true sunlight readable display is typically as a LCD monitor with at least 1000 nits screen brightness and a contrast ratio of more than 5-1.
Thus, when considering what type of screen is the best solution for your outdoor needs you must consider the importance of good battery life with user-friendliness. With the use of hot-swap batteries or external power supply is usuallyadvantageous to opt for a screen with at least 1000 UNITS However, if these powers are not offered a 350 polarized to 500 NIT screen with good contrast ratio, the work will do.
ไม่มีความคิดเห็น:
แสดงความคิดเห็น