太陽光と照明の科学
liproが発信する、光と暮らしの知識
As the long autumn nights begin | How to adjust your lighting for the long nights
As autumn arrives, the sun sets earlier, and the evenings spent at home grow longer. We will introduce how to arrange your lighting by varying brightness and color temperature t...
Lighting for Elderly Parents' Rooms | Considering Age, Brightness, and Glare
It is said that as we age, the same room can start to feel "dark." This guide organizes how to choose light...
Give the Gift of Easy-to-See Brightness | Lighting Gifts for Respect for the Aged Day
How about a "bright and easy-to-see" gift for Respect for the Aged Day that they can use every day? Here's ...
Consider the total cost over 10 years of use | How to buy lighting beyond just the initial price
The cost of lighting isn't solely determined by the initial purchase price. When considering the "total cos...
Electricity Costs of LED Ceiling Lights | How Much Per Month? Estimates and Saving Tips
How much does it cost to power an LED ceiling light per month? We will explain how to estimate this based o...
Ceiling Light Price Ranges and Market Prices | What's the Difference Between Cheap and Expensive?
The price of ceiling lights varies widely, from a few thousand yen to tens of thousands of yen. We will org...
From Fluorescent to LED Ceiling Lights | The 2027 Problem and Re-evaluating Your Choice
Under the Minamata Convention, the manufacture, import, and export of fluorescent lamps for general lightin...