无论是因为我们看它们太多，还是因为它们发出过多的蓝光(blue light)，众所周知，屏幕会导致眼睛问题。在我们的日常生活中，几乎不可能避开屏幕。也有很多像我们一样的夜猫子，经常在晚上看我们的电脑屏幕。好消息是 Windows 10 包含一个特殊的夜间模式(night mode)，称为夜灯。(Night light.)这是一种显示模式(display mode)，旨在通过减少Windows 10 PC、平板电脑或笔记本电脑(tablet or laptop)屏幕发出的蓝光来减轻(blue light)眼睛疲劳(eye strain)。这是夜灯(Night light)在Windows 10中的作用(Windows 10)，如何使用它，以及如何配置它的工作方式：
什么是Windows 10中的(Windows 10)夜灯(Night light)？夜灯(Night light)有什么作用？
当你发现自己在深夜使用电脑或笔记本电脑工作时，会给眼睛带来很大压力。当您在夜间看屏幕时，您的虹膜会收缩以应对您面前的明亮光线和您周围的黑暗环境之间的差异。然后，过了一段时间，眼泪也可能开始涌入你的眼睛，你的头可能会开始疼痛，睡眠似乎会远离你。如果您是“夜猫子(night owl)”，您可能对所有这些症状都很熟悉。
近年来，有证据表明(evidence)暴露在蓝光下会导致眼睛疲劳(eye fatigue)和一系列健康问题。这是让你无法入睡的原因，也是让你的眼睛受伤的原因。
幸运的是，科技界的知名人士(tech world)已经开始注意到这个问题，微软(Microsoft)就是其中之一。该公司的解决方案称为夜灯(Night light)：一种显示模式(display mode)，可将屏幕上显示的颜色更改为更暖的版本。换句话说，夜灯会(Night light)部分去除屏幕上的蓝光。
夜灯(Night light)是在 2017 年春季随Windows 10 创意者更新(Windows 10 Creators Update)一起推出的。2017 年之前发布的以前的Windows 10版本没有此功能，但较新的版本有。如果您不知道Windows(Windows 10) 10的版本，请阅读：如何检查Windows 10版本、操作系统构建(OS build)、版本或类型。
如何在Windows 10中启用(Windows 10)夜灯(Night light)
首先(Start)打开设置应用程序(Settings app)。一种快速的方法是打开“开始”菜单(Start Menu)，然后单击或点击齿轮设置(Settings)图标。在“设置”(Settings)应用程序中，转到“系统(System)”类别。
在左栏中，转到名为Display的部分。然后，在“设置”(Settings)窗口的右侧，找到名为“颜色(Color)”的部分并打开夜灯(Night light)开关。(On)
默认情况下，夜灯(Night light)模式计划在日落和日出(sunset and sunrise)之间激活。您可以在括号中看到其名称旁边显示的状态。在下面的屏幕截图中，您会看到夜灯(Night light)功能已启用，但直到晚上 7:29（太阳即将落山的当地时间）才打开。
如果您想更改Windows 10中(Windows 10)夜灯(Night light)开启的时间，以及它过滤蓝光(blue light)的强度，请阅读本指南的下一部分。
如何从Windows 10调整(Windows 10)夜灯(Night light)的色温(color temperature)
要更改夜灯(Night light)在Windows 10中的工作方式，请单击或点击(click or tap)夜灯(Night light settings)开关正下方的夜灯设置(Night light)。
在夜灯设置中，您会得到关于(Night light settings)“屏幕发出蓝光，可以让您在夜间保持清醒。夜灯显示更暖的颜色以帮助您入睡”("Screens emit blue light, which can keep you up at night. Night light displays warmer colors to help you sleep")这一事实的简短说明。然后，您会得到一个按钮，可用于立即手动打开夜灯(Night light)，即使它的时间表不允许它在您启用它时运行。您还会看到一个名为“强度”(Strength)的滑块。
将此滑块向右拖动会使您的屏幕使用较暖(use warmer)的黄色以减轻眼睛疲劳(eye strain)，而将其向左拖动可使其使用常规的较冷和偏蓝的色调。玩这个滑块，看看你在晚上感觉最好的色温是多少。(color temperature)您应该在晚上而不是在白天摆弄滑块。这样可以更轻松地找到正确的设置，因为您可以感觉到眼睛何时开始放松。
如何设置夜灯的时间表(Night light)
在同一个“夜灯设置”(Night light settings")窗口中，在强度(Strength)滑块下方，您会看到一个名为Schedule的部分。如果您打开夜灯(On)，(Night light) 日程夜灯(Schedule night light)开关也将打开(On)并设置为在日落到日出(Sunset to sunrise)之间应用。Windows 10会根据您的位置和日期自动计算日落和日出(sunset and sunrise)的确切时间。
如果您想安排在一天中的特定时间自动应用夜灯模式，请单击或点击“(Night light)设置时间”(Set hours")选项并手动选择打开(Turn on)和关闭(Turn off)时间。
这就是您可以在 Windows 10中配置的关于夜灯模式的所有内容。(Night light)
打开和关闭(Off)夜灯(Night light)的快速方法
除了通过“设置”(Settings)应用程序之外，还有一种更快的方法可以在Windows 10中(Windows 10)打开(On)或关闭(Off)夜灯(Night light)模式。通过单击屏幕右下角的图标或按键盘上的Windows + A打开操作中心。(Action Center)如果您有触控设备，您也可以从屏幕的右边缘滑动手指。然后单击或点击(click or tap)展开(Expand)以查看所有可用的快速操作。
在快速操作部分，单击或点击(click or tap)夜灯(Night light)按钮以将其从打开切换到关闭(On)，反之亦然(Off)。
当您想停止使用夜灯(Night light)时，请重复相同的步骤。
你喜欢Windows 10中的夜灯(Night light)吗？
即使你加班到很晚，也不代表你不能照顾好自己的健康，包括眼睛和睡眠。减少蓝光有助于解决这个问题，因此微软(Microsoft)决定为我们提供一种夜间模式(night mode)。试试夜灯(Night light)，看看它是如何为您工作的。然后，回来告诉我们它是否有助于减轻您的眼睛疲劳，以及您是否设法睡得更好。
The Windows 10 Night light: What it does and how to use it -
Whether it is because we look at them too much or becaυse they radiate too much blue light, screens are known to causе eye problems. It is almost impossible to avoid screens in our dailу lives. There are also many night owls like оurselνes, regularlу watching our computers' screens during the night. The good news is that Windows 10 includes a special night mode called Night light. It is a display mode designed to reduce eye strain by decreasing the blue light emitted by the screen of your Windows 10 PC, tablet or laptop. Here is what the Night light does in Windows 10, how to use it, and how to configure the way it works:
What is the Night light in Windows 10? What does Night light do?
When you find yourself working on your computer or laptop at late hours, you put a lot of pressure on your eyes. When you're looking at your screen during nighttime hours, your irises contract to cope with the discrepancy between the bright light in front of you and the dark environment around you. Then, after some time, tears might also start coming to your eyes, your head might start to hurt, and sleep seems to run away from you. If you are a "night owl," you are probably familiar with all these symptoms.
In recent years, evidence has appeared that the exposure to blue light causes eye fatigue and a whole range of health issues. It is what keeps you from sleeping, and it is what hurts your eyes.
Fortunately, big names from the tech world have started to take notice of this problem, and Microsoft is one of them. The company's solution is called Night light: a display mode that changes the colors displayed on your screen into warmer versions of themselves. In other words, Night light partially removes the blue light from your screen.
The Night light was introduced with Windows 10 Creators Update, in the spring of 2017. Previous Windows 10 versions that were released before 2017 do not have this feature, but newer versions do. If you do not know what version of Windows 10 have, read: How to check the Windows 10 version, OS build, edition, or type.
How to enable Night light in Windows 10
Start by opening the Settings app. A quick way to do it is to open the Start Menu and click or tap on the gear Settings icon. In the Settings app, go to the System category.
On the left column, go to the section called Display. Then, on the right of the Settings window, find the section called Color and turn the Night light switch On.
By default, the Night light mode is scheduled to activate between sunset and sunrise. You can see its status displayed next to its name, between brackets. In the screenshot below, you see that the Night light feature is enabled, but does not turn on until 7:29 PM - the local time when the sun is going to set.
If you want to change the time when the Night light is turned on in Windows 10, and the strength with which it filters the blue light, read the next sections in this guide.
How to adjust the color temperature of the Night light from Windows 10
To make changes to the way Night light works in Windows 10, click or tap on Night light settings, right under the Night light switch.
In the Night light settings, you get a short explanation about the fact that "Screens emit blue light, which can keep you up at night. Night light displays warmer colors to help you sleep". Then, you get a button that can be used to manually turn the Night light on, right now, even if its schedule does not allow it to run at the time when you are enabling it. You also see a slider called Strength.
Dragging this slider to the right makes your screen use warmer, yellowish colors to reduce eye strain, while dragging it to the left, makes it use the regular cooler and bluish hues. Play with this slider and see what the color temperature that feels best to you at night is. You should fiddle with the slider at night, and not during the day. This makes it easier to find the right setting, because you can feel when your eyes begin to relax.
How to set the schedule for the Night light
In the same "Night light settings" window, below the Strength slider, you see a section called Schedule. If you turned the Night light On, the Schedule night light switch is also On and set to be applied between Sunset to sunrise. The exact time of sunset and sunrise is automatically calculated by Windows 10 depending on your location, and date.
If you want to schedule the Night light mode to be applied automatically during specific hours of the day, click or tap the "Set hours" option and manually select the Turn on and Turn off times.
That is everything that you can configure about the Night light mode in Windows 10.
The quick way of turning the Night light On and Off
There is a faster way of turning the Night light mode On or Off in Windows 10, besides going through the Settings app. Open the Action Center by clicking on its icon in the bottom right corner of your screen, or by pressing Windows + A on your keyboard. You can also slide your finger from the right edge of the screen if you have a device with touch. Then click or tap on Expand to see all the available quick actions.
In the quick actions section, click or tap on the Night light button to toggle it from On to Off and the other way around.
When you want to stop using the Night light, repeat the same steps.
Do you like the Night light in Windows 10?
Even if you work late long hours, that does not mean that you cannot take care of your health, including your eyes and sleep. Reducing blue light helps in this matter, so Microsoft decided to give us a night mode that does just that. Try the Night light and see how it works for you. Then, come back and tell us if it helped reduce the strain on your eyes and if you managed to sleep better.
