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Ergonomics of monitors
Choosing the right screen is of great importance, for good legibility of the information on the screen, but also for comfort and to avoid tax of the eyes. In recent years, you see two opposing trends, on the one hand the monitors getting bigger, a 17 "flat screen is already not even discontinued, and 22" to 24 "displays are no exception. But on the other hand, they are smaller, because more and more people email and other applications on a 12 '' or 13 '' laptop, read their phone, Blackberry or I-phone. The small screens are of course ideal for mobile use, but for long term and intensive display use they are too small. Another trend is the use of dual displays, or widescreen displays that the screen can be split in two.
Font size The greater the resolution of the screen is the more data can be displayed and the sharper the image. A high resolution is basically so favorable, because the image is sharper. Sometimes, however, opted for a relatively small screen (15 "or less) with high resolution at the same time, in those cases so the characters and icons are too small on the screen.
The good relationship between the character size and viewing distance is between 1:150 and 1:250 (of course depending on lighting conditions than the eyes and any eye diseases, etc.). When the characters on the screen 3.5 mm high is the optimal viewing distance 3.5 x 200 = 700 mm. so This is fine in the range of the ideal viewing distance: between lies between 60 and 80 cm. In small characters, it is wise to display the characters larger, this can be done by three ways: on the screen.
![]() 1. By setting on page width (Page width). 2. By adjusting the zoom factor but a higher percentage. 3. By pressing Ctrl key and then to the scroll wheel to spin. Dual or Multi-screen More and more computer users are working with two or more concurrent applications, where information from one application must be compared with those in another, or must be copied from one to the other. In these cases it is pleasant, and it works much more efficiently, to both applications side by side, this can be done by using two monitors next to each other, or a widescreen flat screen that is split in two. Scientific research indicates that 33% less errors in specific tasks, and a minimum of 11% higher productivity (j. Colvin, 2004). The choose a widescreen monitor that displayed dualscreen or two single screens next to each other depends on the type of task to be done. In principle can be displayed on two separate screens more than on a widescreen, below is a table that gives an indication how much information (number of characters) on a screen: Twice a 17 "or 19" monitor can so clearly more information than on a 24 "widescreen. Laptop or flat screen
Problems with too small characters and not adequately display information on the screen is especially a problem with laptops is smaller than 14 "or laptops of 15" with a very high resolution. In those cases, it is when working with the computer for long periods (more than 2 hours) wise to an external display. The display can be done via a docking station or directly to the laptop plugged in. Could possibly serve as a second screen laptop screen so dualscreen. See image on the right.![]() Author: Hugo Forest – Manager Ergonomics at BakkerElkhuizen |
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