Flicker Free & Blue Light Filter
ViewSonic, with its 25-plus years of visual solution experience is unveiling an advanced series with Flicker-Free display technology. This technology completely eliminates screen flickering by integrating DC-modulation LED backlights, and will positively impact the comfort and eyesight of all types of users by preventing the occurrence of Computer Vision Syndrome. While other brand uses Pulse Width Modulation (PWM) which works at a fixed frequency and turns the backlight on and off to dim the backlight on LED monitors and give the impression of being less bright.
How to easily test Flicker-Free when buying a display at the retailer
Mobile phone test –With the screen turned on, set the screen to a brighter setting. Next, turn on your smartphone video camera and point it at the display. Now start to adjust brightness from 100% to 50% and even to 0%, and watch as the flicker effect becomes more visible.
ViewSonic's blue light filter is optimized to everything you view
ViewSonic Blue Light Filter technology can be adjusted to different viewing scenarios, lowering the amount of blue light output and protecting viewers from the possible side effects of blue light with little or no compromise of colour. In fact, as the blue line on the graph below shows, ViewSonic's Blue Light Filter lets you reduce blue light by up to 87%.
Prolonged blue light exposure may be harmful to the eyes
Research has shown that it is easier for our eyes to filter out green and red-spectrum light, as they carry less photon energy. However, the higher level of energy in blue light makes the eye unable to do this, which is why it has a more pronounced effect on viewers. In fact, research has shown that prolonged exposure over time to all forms of blue light – from the sun, screens, displays and LED and fluorescent lamps – is harmful enough to cause eye strain, disrupt sleep patterns, and even cause eye damage such as cataracts and macular degeneration.
The higher level of energy in blue light makes the eye unable to filter out spectrum light.
By providing a total of 100 filter levels, ViewSonic displays give users greater flexibility for a wider range of viewing scenarios. The blue light filter bar, seen below, can be adjusted from between 100 to 0 (level 0 is equivalent to a total 87% reduction) to effectively filter out blue light.