Help determine minimum viewing distance to small LCD display

18 Jun 2010 - 1:27pm
6 years ago
2 replies
2191 reads

Hi I have a user using a small 10.4" LCD display with a resolution of 1024x768 and has an aspect ratio of 16x10. Could you please help me find out what the minimum viewing distance (distance between the center of the screen and user's eye) is and what additional factors may be involved (like screen brightness, contrast, etc.) and how these factor into the equation.  Thanks a lot for your help! 


18 Jun 2010 - 5:13pm

What does your user do with that display ? Is it more or less portable ? Or if the display is fixed, does the user have to move in order to perform his task/activity ?

If I assume that it is not a touch interface, the first (and maybe only) obvious criteria that comes to me is text legibility. Basically, a display could be meters away with no problem, as long as the text you have to read is displayed big enough. One simple thing you can do at first glance, is measuring the height of letters on the screen, and give it to us ? I can do the math to tell you at which distance the text legibility  will comply with ISO standards.

Another second criteria may be the fact that LCD displays are subject to bad visibility and strange color distortion when the user is out of the visibility angle. The latter may be narrow in some cases. I remember an Airbus A380 simulator where the display was mounted upside down. Result : information that were intended to be very salient (big red text) were just... invisible, because pilots were located out of the (inverted) visibility cone.


18 Jun 2010 - 7:20pm

Hi,  thank you for your response.  The monitor is not so portable, but does have tilt features.  Since it's more or less fixed, the user who is seated needs to move his/her head and eyes to view the screen.  This is not a touch interface monitor.  The text size in inches ranges from 0.12 inches to 0.16 inches.  Your help is really appreciated!

Thank you,


Syndicate content Get the feed