如果您在Windows 10 计算机或设备(computer or device)上花费大量时间，了解如何调高亮度以及如何降低亮度会派上用场。当您使用笔记本电脑或平板电脑时，此设置尤其重要，因为无论您是在室内还是室外，您都可能需要根据周围环境调整显示器的亮度。幸运的是，Windows 10提供了几个用于更改此设置的选项。阅读本教程并了解如何在Windows 10中调低亮度或增加显示器的亮度：

注意：(NOTE:)提供的功能在Windows 10 November 2019 更新(Update)或更新版本中可用。如果您使用的是旧版本的Windows 10，您可能无法访问所有功能。检查您的Windows 10版本，并在必要时获取适用于您的最新Windows 10更新。

在某些键盘上，有专门设计用于帮助您轻松修改屏幕亮度的按键。(screen brightness)在HP Spectre 13t笔记本电脑上，您可以使用F2 和 F3 键(F2 and F3 keys)来降低或提高屏幕亮度(screen brightness)。

在带有类型盖的Surface Pro设备上，您可以使用键盘快捷键(keyboard shortcut) Fn + DEL来增加亮度，并使用Fn + Backspace来降低亮度。

在我们装有Windows 10的(Windows 10)Lenovo Legion Y520 笔记本电脑(Lenovo Legion Y520 laptop)上，您可以按组合Fn + F11降低亮度，按Fn + F12增加亮度。

大多数 Windows 10 笔记本电脑和平板电脑都提供这些键和键盘快捷键。寻找带有特定亮度太阳图标(sun icon)的类似键。

遗憾的是，您没有在台式计算机的键盘上获得这些键，因为每个显示器都有自己的用于控制亮度的设置，正如您在下一节中看到的那样。

虽然某些显示器具有用于调整亮度的专用按钮（在前面或在其边缘之一），但对于其他显示器，您必须查看其特定菜单才能找到亮度控件。请查阅显示器手册以浏览其菜单并找到适当的设置。

操作中心(Action Center)中的快速操作也可用于更改亮度。使用键盘快捷键(keyboard shortcut) Windows + A打开操作中心(Action Center)，在窗口底部显示一个亮度滑块。(brightness slider)

向左或向右移动操作中心(Action Center)底部的滑块可更改显示屏的亮度。

您还可以使用“设置”(Settings)应用更改亮度级别(brightness level)。使用Windows + I 键盘快捷键(keyboard shortcut)打开设置，然后单击或点击(click or tap)系统(System)。

系统类别在显示(Display)选项卡中打开。(System)使用“亮度和颜色”("Brightness and color")下的滑块来“更改内置显示器的亮度("Change brightness for the built-in display)”。

您还可以启用“光线变化时自动更改亮度”("Change brightness automatically when lighting changes")选项，让您的设备根据传感器在您的环境中测量的光量自动更改亮度级别。(brightness level)

Windows 移动中心(Windows Mobility Center)也可用于修改显示器的亮度。在任务栏的搜索字段(search field)中键入移动性(mobility)，然后单击或点击“Windows 移动中心("Windows Mobility Center)”。

使用显示亮度(Display brightness)下的滑块调整亮度级别。

您还可以使用万能的PowerShell来更改显示器的亮度。通过在任务栏的搜索字段(search field)中键入“powershell”打开 PowerShell(Open PowerShell)，然后单击或点击Windows PowerShell。

要更改亮度，请输入以下命令：

**(Get-WmiObject -Namespace root/WMI -Class WmiMonitorBrightnessMethods ).WmiSetBrightness(1,**brightnesslevel)

将brightnesslevel替换为显示器亮度所需的百分比值(percentage value)，范围为0 到100。要将亮度设置为70%，我们输入了以下命令：

(Get-WmiObject -Namespace root/WMI -Class WmiMonitorBrightnessMethods ).WmiSetBrightness(1,70)

按下Enter后，亮度会根据您的喜好进行调整。

降低屏幕亮度可降低能耗(energy consumption)并增加设备的自主性。对于笔记本电脑和平板电脑，Windows 10有一项设置，可根据您使用的电源模式(Power mode)更改显示器的亮度。要启用此选项，首先单击或点击(click or tap)系统托盘(system tray)中任务栏右侧的电源(Power)图标，然后访问电池设置(Battery settings)。

提示：如果您在设备的(TIP:)系统托盘(system tray)上看不到电源(Power)图标，您可以通过阅读了解如何找到并显示它：Windows 10系统托盘(system tray)- 如何显示或隐藏图标！

在“电池(Battery)设置”窗口中，向下滚动到“省电模式(Battery saver)”部分。选中底部的框，旁边的“在省电模式下降低屏幕亮度”("Lower screen brightness while in battery saver")选项。

当您的设备尝试节省电池电量时，此设置会自动使屏幕变暗。再次单击(Click)或点击系统托盘中的(system tray)电源(Power)图标，将电源模式(Power mode)滑块一直向左移动以获得“最佳电池寿命("Best battery life)”。只要您的设备未插入电源，这应该会降低显示亮度(display brightness)，从而节省电池。

知道如何增加和降低亮度可以帮助您提高工作效率和专注度。屏幕太亮或太暗都会对您的眼睛造成伤害，让您感到不舒服。您最喜欢哪种(Which)方法来更改显示器的亮度？你知道其他人吗？在下面发表评论(Comment)，让我们讨论。

If you spend a lot of time оn your Windows 10 computer or device, knowing how to turn up the brightness and how to lower it can come in handy. This setting is especially importаnt when you use a laptop or a tablet, because, whether yоυ are indoors or оutdoors, you might need to adjust the display's brіghtness according tо yоur surroundings. Luckily, Windowѕ 10 offers ѕeveral options for сhanging this setting. Read this tutorial and learn how to turn down the brightness or how to increase the brightness for your disрlaу in Windows 10:

NOTE: The features presented are available in Windows 10 November 2019 Update or newer. If you're using an older version of Windows 10, you might not have access to all the features. Check your Windows 10 build and, if necessary, get the latest Windows 10 update available for you.

On some keyboards, there are keys specially designed to help you modify the screen brightness with ease. On an HP Spectre 13t laptop, you can use the F2 and F3 keys to lower or increase the screen brightness.

On Surface Pro devices with type covers, you can use the keyboard shortcut Fn + DEL to increase the brightness and Fn + Backspace to decrease it.

On our Lenovo Legion Y520 laptop with Windows 10, you can press the key combination Fn + F11 to lower the brightness and Fn + F12 to increase it.

These keys and keyboard shortcuts are available on most Windows 10 laptops and tablets. Look for similar keys with the brightness-specific sun icon on them.

Sadly, you don't get these keys on keyboards for desktop computers, since each monitor has its own settings for controlling brightness, as you can see in the next section.

While some monitors have dedicated buttons for adjusting brightness (either in front or on one of their edges), for others, you have to look through their specific menus to find the brightness controls. Consult the manual for your display to navigate through its menus and find the appropriate setting.

The Quick actions in the Action Center can also be used to change the brightness. Use the keyboard shortcut Windows + A to open the Action Center, revealing a brightness slider at the bottom of the window.

Moving the slider at the bottom of the Action Center left or right changes the brightness of your display.

You can also use the Settings app to change the brightness level. Open Settings by using the Windows + I keyboard shortcut, and click or tap on System.

The System category opens in the Display tab. Use the slider under "Brightness and color" to "Change brightness for the built-in display."

You can also enable the "Change brightness automatically when lighting changes" option to have your device automatically change the brightness level based on how much light its sensors are measuring in your environment.

The Windows Mobility Center can also be used to modify the brightness of your display. Type mobility in your taskbar's search field, and then click or tap on "Windows Mobility Center."

Use the slider under Display brightness to adjust the brightness level.

You can also use the almighty PowerShell to change the brightness of your display. Open PowerShell by typing "powershell" in the taskbar's search field, and then clicking or tapping on Windows PowerShell.

To change the brightness, enter the following command:

**(Get-WmiObject -Namespace root/WMI -Class WmiMonitorBrightnessMethods).WmiSetBrightness(1,**brightnesslevel)

Replace brightnesslevel with the percentage value you want for your display's brightness, from 0 to 100. To set the brightness at 70%, we entered the command:

(Get-WmiObject -Namespace root/WMI -Class WmiMonitorBrightnessMethods).WmiSetBrightness(1,70)

As soon as you press Enter, the brightness is adjusted according to your preferences.

Lowering the screen's brightness decreases energy consumption and increases the autonomy of your device. For laptops and tablets, Windows 10 has a setting that changes the brightness of your display according to the Power mode that you use. To enable this option, first click or tap on the Power icon in the system tray, on the right side of the taskbar, and then access Battery settings.

TIP: If you can't see the Power icon on your device's system tray, you can learn how to find it and show it, by reading: The Windows 10 system tray - How to show or hide icons!

In the Battery settings window, scroll down to the Battery saver section. Check the box at the bottom, next to the "Lower screen brightness while in battery saver" option.

This setting automatically dims the screen when your device is trying to save battery. Click or tap the Power icon in the system tray again, and move the Power mode slider all the way to the left for "Best battery life." As long as your device is not plugged in, this should lower the display brightness, thus saving battery.

Knowing how to increase and how to lower the brightness helps you be more productive and focused. A screen that is too bright or too dim can take its toll on your eyes and make you uncomfortable. Which method do you like best for changing the brightness of your display? Do you know of any others? Comment below and let's discuss.