I was led to a small room bathed in soft red light.

我被领进了一个被柔和的红光笼罩着的小房间。

《柯林斯英汉双解大词典》

Previewing by red light, focusing by double red lights, and equipped with LED lighting.

单红光预览，双红光对焦，配备LED照明。

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Then given a design example: a fiber transmission illumination module based on red, green and blue LED light combining, design process is expatiated, testing data is presented.

然后应用设计实例：基于红，绿和蓝三色LED合光的光纤照明模组，详述了设计过程，给出了测试数据。

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In another bypass, they insert a wire into a silicon cover for an LED light that blinks red when the user enters an invalid code.

FORBES: Defcon Lockpickers Open Card-And-Code Government Locks In Seconds

In this case, Richardson combined a couple of Arduino circuit boards with an infrared LED light -- that little red bubble on the front of your TV remote -- and programmed the whole thing to interact with a TV's closed-captioning system.

CNN: Hacked TV remote will auto-mute Snooki

Generally LED bulbs use either a combination red, green and blue LEDs to create white light, or they use a phosphor coating (more common) in combination with a blue LED.

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