Red Screen - Night Vision & Astronomy Light

Turn your screen into a pure red light source. Protect your night vision, try to fix stuck pixels, or use as a low-blue light reading lamp.

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Why Use a Red Screen?

A full red screen is more than just a color; it serves specific biological and technical functions. Red light has the longest wavelength in the visible spectrum (~650nm) and is the only color that does not degrade human rhodopsin (the pigment used for night vision).

Red Black Screen on monitor saving battery

1. Preserving Night Vision (Astronomy Friendly)

Astronomers and stargazers use red light to read star charts in the dark. Unlike white or blue light, red light allows your pupils to stay dilated, ensuring your eyes remain adapted to the darkness. Use this tool on your phone to navigate in the dark without blinding yourself.

2. Fixing Stuck Pixels

A "stuck pixel" often appears as a bright dot of a specific color. If you have a pixel that is stuck on green or blue, flashing a pure red screen (or alternating colors) can sometimes "unstick" the liquid crystal and return it to normal function. This is a safe first step before attempting physical pressure methods.

3. Low Blue Light for Sleep

Exposure to blue light before bed inhibits melatonin production. Red light contains zero blue wavelengths. Using a red screen as a dim bedside lamp can create a calming environment conducive to sleep, mimicking the natural sunset spectrum.

Technical Specifications

PropertyDetails
HEX Code#FF0000
RGB Color Model(255, 0, 0)
Wavelength~620–750 nm
EffectNight Vision Safe
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