SmartDevil Technology Limited was established in 2010. By sticking to the concept that “we’ll never compromise on quality and never stop to innovate” from the beginning, SmartDevil has always provided consumers with the most trendy and high-class products. Our designers spare no efforts on every detail ranging from materials selecting to appearance design, in an attempt to make your high-quality mobile terminal a better tool and highlight your life style. SmartDevil has always stayed close to the latest trends in digital products and fashion, attempting to spread its profound understanding for humanist spirits and artistic taste.
Detailed Images
What is Blue Light? And What are the problems with blue light?
What is Blue Light?
In the light of the phone's screen,It contains a high-energy blue light of 450-470nm,which can go straight to the yellow spot at the base of the retina,causing serious damage to the eyes.
What are the problems with blue light?
1.Vision drop or loss.
2.Eyes fatigue,dry,tingling and other phenomena
3.Visual fatigue aggravates the lesion of macular region.
4.The night's screen disturbs sleep.
Why is anti-UV screen protector itself yellow? The color of a substance is related to the absorption, transmission and reflection of light. It is different from the nature and form of the substance. The absorption and reflection of light are different. As a result, the substance presents different colors. When the substance selectively absorbs the light of a certain wavelength in white light, it presents the color complementary to it, that is, people's eyes sense. The color of knowledge.So in optics, when the two kinds of color light are mixed in proper proportion and produce white sensation, these two colors are called complementary colors. For example, equal amount of red light + green light = yellow light, complementary to blue light. So it's not difficult to understand why the Blue ray film is yellow. There are two explanations A：According to the material color principle, anti blue light film absorbs blue, so showing its complementary color- yellow. B：According to the color rendering principle of RGB, blue light is obstructed, red and green light is transmitted. So the mixture of red and green appears yellow.
Why is anti blue light film yellowing in white background while is blue in the black background? According to the principle of color rendering, objects that are able to absorb all light are black and can reflect all light objects in white. When the Blu ray film is in the white background, the film shows a yellow transmission light. and when the blue film is in the black background, the film presents the reflection light as the blue light. Personal experience proves the same. If it is pasted on a white phone, it will be a bit yellow. The blue light film will block the blue light in the spectrum, and the white part of the cell phone will become a warm color. If it will affect the appearance, it will feel that nothing is perfect in the world. Compared with the health of the eyes, this is totally acceptable. One thing to note is that the blue light film itself is still high-definition and transparent when you play your phone. The most intuitive way to identify it is to see it at a 30 degree angle. The color we see is the result of interferometric reflection processing of light.
How do I install？
How do I install the Screen Protector?
Step 1:Remove the alcohol bag and wipe your phone screen. (Please remove your old screen protector if you have an old screen protector)
Step 2:Clean the phone screen with a dry wipes.
Step 3:Dust off your phone screen with dust stickers.
Step 4:Install Qickinstaller of SmartDevil.
Step 5:Put in the screen protector and press from the center to the surrounding area.（It is possible to remove the Qickinstaller at this time after you put in the screen protector）
Finally, the screen is perfectly fitted to your cell phone.(Please press down the phone screen if there will be a bubble.Then the bubble will automatically disappear.Please don't worry about it.)
Our Feature:
In 2014, Smart Devil brought Quickinstaller to the market and changed the whole industry…
We are the designer of Qickintaller.
In 2016, we launched the Quickinstaller V.3.0, making location on the device better!
With the assistance of Quickinstaller, all openings on your device can be identified accurately, leaving no room for deviation during the process of application of screen protector, making the screen protector on your device look like another screen itself!
Hit the protector onto the screen center lightly and quickly and it’ll affix voluntarily, along with the air being squeezed out.
Product Features
Anti-Blue light Tempered Glass
We introduce fashionable element in our design and the see-through style on the front highlights your phone’s nature. All four corners of the Film are thicker than the remaining, readily protecting your phone and the front of the film from scraping and also protecting the front of your phone from watermarks.
Blue Light Filtering
This Anti-Blue light Tempered glass protects your eyes from harmful blue light while maintaining the superior color performance of your device display.Keep your eyes healthy and not tired after staring at the iPhone xs max screens for a long time.
The oil-proof and waterproof
The oil-proof and waterproof layer can effectively segregate the stains of water and oil and thus achieve the effects of being fingerprint-proof and sweat-resistant.
Face ID Compatible
Exclusively designed for the Apple iPhone Xs Max.This screen protector does not interfere with the Face ID feature. (NOTE:The product itself is light yellow and will cover your camera.but does not affect shooting and use.）
