太陽光と照明の科学
liproが発信する、光と暮らしの知識
What is a Sleep Light? Differences from Night Lights and Choosing the Right One
Small lights to use in the bedroom at night. We'll clarify the differences between night lights, general nightlights, and bedside lights, and then outline 5 key points for choos...
Sleep and Light | Lighting Concepts to Optimize Your Pre-Sleep Environment
Nighttime lighting isn't just about darkness. Considering the relationship between sleep and light from the perspectives of brightness, wavelength, and...
How to Choose an Eye-Friendly Ceiling Light: Considering Glare, Color Temperature, and Color Rendering
To choose a ceiling light that is easy on the eyes, it's important to consider not only brightness but also...
What is healthy light? A new approach to lighting that improves your eyes, sleep, and daily life
Lighting isn't just about brightening a room. We'll explain the concept of "healthy light" that you should know when choosing...
"Aren't LEDs too bright?" How lighting optical design solves the discomfort of direct glare
LED "glare" can be eliminated through optical design. This article scientifically explains the difference between discomfort from direct viewing and...
What's so great about "Ra97"? How lighting's color rendering can change your life
The difference between Ra80 and Ra97 is greater than the numbers suggest. From dining tables to study desks to makeup...
Is "LED blue light is three times that of the sun" true? A lighting professional explains scientifically
Is "LEDs are three times brighter than the sun" true? Explaining the truth about LED blue light with the latest...