<div class="eyestrain clearfix">
<p>
Looking at a screen from a close distance can cause eye fatigue over time. A computer monitor can wear your eyes out faster than other devices, such as TV's. So how do we reduce eye fatigue? At EIZO, we have researched the causes of eye fatigue in order to create the ideal eye-friendly monitors.</p>
<div class="page" id="tab">
<ul class="clearfix transparent">
<li class="tab01 first">
<span class="active">Subject 1 LED Backlight</span></li>
<li class="tab02">
<span class="">Subject 2 Bright Screen</span></li>
<li class="tab03">
<span class="">Subject 3 Blue Light</span></li>
</ul>
</div>
<div class="view" id="tab01_content" style="display: block; opacity: 1;">
<h2 class="mt_min">
LED backlight causes eye fatigue?</h2>
<p>
LCD monitors use backlights to display images. The number of reported cases of eye fatigue caused by screen flickering has increased since the popularization of LED-backlit Monitors. LCD monitors can even affect the eyes of people who don't notice backlight flickering.</p>
<h3 class="arrow_02">
How does flicker work?</h3>
<p>
Flicker is the result of backlight dimming (brightness control). There are 2 dimming techniques applied to LCD monitors: PWM (Pulse-Width Modulation and DC (Direct Current)</p>
<table class="standard">
<tbody>
<tr>
<th>
PWM Dimming</th>
<td>
<strong>Controls brightness by cycling the backlight on and off.</strong><br>
<strong><span class="blue">Pros</span></strong> Wide brightness adjustment range. Simple circuit design.<br>
<strong><span class="red">Cons</span></strong> High speed cycles may cause flicker on LED screens.</td>
</tr>
<tr>
<th>
DC Dimming</th>
<td>
<strong>Controls brightness by adjusting power supply.</strong><br>
<strong><span class="blue">Pros</span></strong> No flickering.<br>
<strong><span class="red">Cons</span></strong> Difficult color reproduction with dark images. Complicated circuitry.</td>
</tr>
</tbody>
</table>
<div class="mt30">
<img alt="What is PWM Dimming flicker?" height="146" src="images/eyestrain_img_02.jpg" width="720"></div>
<div class="animation">
<div class="ani_01">
<img alt="" height="130" src="images/PWM_anime_01.gif" width="130"></div>
<div class="ani_02">
<img alt="" height="130" src="images/PWM_anime_02.gif" width="130"></div>
<div class="ani_03">
<img alt="" height="130" src="images/PWM_anime_03.gif" width="130"></div>
<div class="ani_04">
<img alt="" height="130" src="images/PWM_anime_04.gif" width="130"></div>
</div>
<div>
<img alt="The darker the screen, the more flicker" height="184" src="images/eyestrain_img_04.jpg" width="720"></div>
<h2>
Tested: PWM vs. DC</h2>
<p>
We conducted an experiment to find out how users experienced flickering.</p>
<h3 class="arrow_02 mb_lar">
Did you notice any flickering?</h3>
<div>
<img alt="Did you notice any flickering?" src="images/eyestrain_img_05.jpg" style="width: 720px; height: 210px;"></div>
<h1 class="title1">
DC dimming = Low flickering!</h1>
<div class="hr border-dotted">
 </div>
<h3 class="arrow_02 mb_lar">
Did you feel eye fatigue?</h3>
<div>
<img alt="Did you feel eye fatigue?" src="images/eyestrain_img_06.jpg" style="width: 720px; height: 210px;"></div>
<h1 class="title1">
DC dimming = Low eye fatigue!</h1>
<div class="hr border-dotted">
 </div>
<h3 class="arrow_02 mb_lar">
Lastly, which was the easiest to view?</h3>
<div class="mb20">
<img alt="Lastly, which was the easiest to view?" src="images/eyestrain_img_07.jpg" style="width: 720px; height: 210px;"></div>
<h1 class="title1">
DC was overall easiest to view!</h1>
<p style="text-align: right;">
<span class="fs12">Source: EIZO Corporation; EyeCare Dimming Technology - October 2012<br>
- Results vary from person to person.</span></p>
<p style="text-align: right;">
 </p>
<div class="mt30">
<div class="notes-frame">
<h1 class="cancel title1">
<span class="blue">How EIZO makes a difference</span></h1>
<table border="0" cellpadding="1" cellspacing="1">
<tbody>
<tr>
<td>
<h4 class="cancel">
Hybrid Dimming Method</h4>
<p>
The FlexScan frameless monitors utilizes a hybrid solution to regulate brightness and make flicker unperceivable without any drawbacks like compromising color stability - even on low brightness settings as follows.</p>
<div class="notes-frame">
- High Brightness: DC Dimming Method<br>
- Middle to Low Brightness: PWM Dimming Method</div>
</td>
<td style="width: 20px;">
 </td>
<td style="width: 200px;">
<img alt="FlexScan Frameless" src="images/eyestrain_img_09.jpg" style="width: 200px; height: 178px;"></td>
</tr>
</tbody>
</table>
<p>
<br>
Furthermore, the monitors implement the high PWM method (over 10,000Hz) and the phase-shifting PWM dimming control in some models.</p>
<p class="arrow">
White Paper: <a href="/support/db/files/technical_information/flexscan/WP15-002.pdf" target="_blank">Seven Ergonomic Features of the FlexScan EV Series</a> [PDF]</p>
</div>
</div>
<div>
<img alt="EIZO Montiors Provide Great Eye Comfort and Great Image Quality." src="images/eyestrain_img_08.jpg" style="width: 720px; height: 126px;"></div>
<!--/#tab01_content--></div>
<div class="view" id="tab02_content" style="display: none;">
<h2 class="mt_min">
A bright screen causes eye fatigue?</h2>
<p>
At first glance, a bright screen seems clear and easy to see. However, a screen that is too bright is a primary cause of eye fatigue. On the other hand, if a display is too dark it is too difficult to see and also adds to eye fatigue. At EIZO, we tested the effects of our Auto EcoView, which automatically adjusts the screen's brightness to an appropriate level in response to ambient lighting.</p>
<h3 class="arrow_02 mb_lar">
Did you notice flickering?</h3>
<div>
<img alt="Brightness Sensor ON / Brightness Sensor OFF" height="210" src="images/eyestrain_img_017.jpg" width="720"><br>
<ul>
<li>
<span class="fs12">Brightness Sensor OFF: Brightness of 100%, Brightness Sensor ON: Automated Control (EcoView)</span></li>
</ul>
<p style="text-align: right;">
<span style="font-size: 12px; text-align: right;">Source: EIZO Corporation, Seven Ergonomic Features of the FlexScan EV Series. December 2015.</span></p>
</div>
<h1 class="title1">
Auto EcoView reduces eye fatigue!</h1>
<div>
<img alt="Reduced fatigue using optimum brightness levels" src="images/eyestrain_img_018.jpg" style="width: 720px; height: 126px;"></div>
<div class="mt30">
<div class="notes-frame">
<h1 class="cancel title1">
<span class="blue">How EIZO makes a difference.</span></h1>
<h4>
Auto Brightness Control</h4>
<p>
The Auto EcoView brightness sensor detects changes in ambient brightness throughout the day and automatically adjusts the screen to the ideal brightness level to achieve maximum eye comfort.</p>
<p style="text-align: center;">
<img alt="Auto Brightness Control" src="images/eyestrain_img_011b.jpg" style="width: 400px; height: 188px;"></p>
</div>
</div>
<!--/#tab02_content--></div>
<div class="view" id="tab03_content" style="display: none;">
<h2 class="mt_min">
Does Blue Light affect sleep quality?</h2>
<p>
Research indicates that exposure to blue light emitted by electronic devices after sundown impacts sleep.</p>
<h2>
How to reduce blue light on an LCD monitor</h2>
<p>
In order to prevent eye fatigue caused by Blue Light, EIZO tested how much we could reduce the amount of Blue Light emitted by making adjustments to the monitor.</p>
<h3 class="arrow_02">
Lowering the color temperature</h3>
<p>
Lowering the color temperature causes light distribution to shift towards longer wavelengths (more reddish colors). When we change the initial color temperature of our monitors (6500 - 7000K) to 5000K...<br>
<strong><span class="fs16">blue Light was cut by 20%</span></strong></p>
<p class="image_cnt">
<img alt="Effect of lowering color temperature" src="images/eyestrain_img_019.jpg" style="width: 500px; height: 305px;"></p>
<h3 class="arrow_02">
Lowering Color Temperature and Brightness</h3>
<p>
Overall energy usage is reduced by lowering the monitor brightness. A brightness reduction from highest settings to an adequate value (approx. 20 cd/m<sup>2</sup> and a color temperature of 5000K)...<br>
<strong><span class="fs16">cut the blue Light by 80%</span></strong></p>
<p class="image_cnt">
<img alt="Effect of lowering brightness and color temperature" src="images/eyestrain_img_020.jpg" style="width: 500px; height: 305px;"></p>
<p>
<img alt="Reduce Blue Light by Adjusting the Monitor" src="images/eyestrain_img_021.jpg" style="width: 720px; height: 126px;"></p>
<div class="mt30">
<div class="notes-frame">
<h1 class="cancel title1">
<span class="blue">How EIZO makes a difference</span></h1>
<p>
The Circadian Dimming function in Screen InStyle dedicated software for the FlexScan frameless monitors automatically changes the color temperature of your monitor as the day progresses. Maintain your body's natural circadian rhythm by setting the monitor to gradually reduce blue light during the evening, helping you sleep easier.</p>
<table border="0" cellpadding="1" cellspacing="1">
<tbody>
<tr>
<td style="width: 100px;">
 </td>
<td>
<h3>
Circadian Dimming</h3>
<p>
<img alt="Circadian Dimming" src="images/eyestrain_img_022.jpg" style="width: 400px; height: 225px;"></p>
</td>
</tr>
</tbody>
</table>
<br>
<p class="arrow">
<a href="/products/flexscan/blue_light_reduction/">Sleep Tight with Less Blue Light</a></p>
</div>
</div>
<!--/#tab03_content--></div>
<div class="commonArea">
<ul class="clearfix" id="subTab">
<li class="subTab01">
<span class="sub_current"><a href="#tab01">Subject 1 LED Backlight</a></span></li>
<li class="subTab02">
<span><a href="#tab02">Subject 2 Bright Screen</a></span></li>
<li class="subTab03">
<span class=""><a href="#tab03">Subject 3 Blue Light</a></span></li>
</ul>
<!--/.commonArea--></div>
<!--/.eyestrain--></div>


La boutique française

officielle

Livraison en 24H

en France métropolitaine

Paiement en 3X

à partir de 699€

Garantie 5 ans