Viewing Distance for LCD TVs

Many enthusiastic consumers like to go on TV the biggest and most expensive they afford. However, it comes in May against the budget planning is not all that follow, especially when one is the course for a widescreen TV. Because there is a direct relationship between the optimal screen size and viewing distance available.


A restriction on viewers away for LCD TVs because they think the difference while watching TV sitting too close or too far. Sitting too close to a TV and one can view images of the storage structure - scanning lines or pixels forming the image and divert your attention and spoiling your home theater experience. However, sitting too far, and the effect is lost.

There are different opinions on how best to determine the optimum distance for viewing a television screen size specified. However, there are some guidelines that may follow.

The Association of Motion Picture and Television Engineers (SMPTE) recommends that the screen size for home theater, should occupy a 30-degree field of view - the horizontal plane - the public. Alternatively, the ideal TV viewing distance should be such that the screen width occupies an angle of 30 degrees from the viewing position.

The viewing angle of 30 degrees was apparently received by many as basic home theater and film.

Thx certification: SMPTE This guide is consistent with the standards of the certification Thx in recommending that the last row of seats must have at least one angle of view of 26 degrees and while recommending cost-effective viewing angle of 36 degrees.

We believe that within the viewing angle limits, viewers are better immersed in the action movie itself.

There is also the issue of disposal of the television screen based on visual acuity. Does not represent the optimum viewing distance - rather, it refers to the maximum distance from which lost some image detail.

Technically speaking, visual acuity is a measure of spatial ability in resolving the eye and indicates the angular size of the smallest detail that the visual system of a person can resolve.

Viewing the views of a TV remote, visual acuity is the point beyond the specific details of the image is not resolved by the viewer vision system, as it appears to blend next to the picture information.

So how do these rules apply in practice?

Here's a policy that can help implement the guidelines detailed above. It is the policy of separation screen TV refers to the width of the screen instead of diagonal screen, because everything is closed until the angle subtended. Additionally, referring to the width of the screen has another advantage - namely, that the rule of thumb apply to both 4:3 and 16:9.

A primary consideration for the viewing distance - based on SMPTE / thx guidance and visual acuity - which are closer the distance of TV viewing should be limited to about twice the width of the screen (more precise 1.54 x width of a screen angle of 36 degrees supported by detailed Thx). On the other hand, the greater the distance should not exceed five times the width of the screen.

This should give a fair approximation of the distance from the television screen. Note however that not always the ideal viewing distance of a home theater system, but represent the limits within which your remote to the TV makapanood in theory should be outside the conflict zone.

In other words, approaching twice the size of the width of the screen and the image of the scan lines, the outbreak of pixels and all video devices too visibly intrusive - leading to distractions to spoil your experience watching the film. Stay out of 5 times the width of the screen and the vision system will not be able to resolve every detail of images.

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