#249 Lighting Isn't Just About Brightness: JDI's LumiFree Transforms How Food and Interiors Look

[Hidenori Kimura's Tech Magic #249 ] Japanese homes are built with great attention to natural light, yet when it comes to artificial lighting, the attitude tends to be "as long as the whole room is bright, that's fine." Trying JDI's LumiFree this time reminded me that simply putting the right amount of light exactly where it's needed can dramatically change how both meals and interiors look.

In Japanese homes, "light up everything" is the norm

In Japanese homes, the standard is a large ceiling light that brightens the entire room evenly. People think carefully about window placement and natural light when building a house, but when it comes to lighting fixtures, it becomes "bright is good enough." Personally, I think this is an area worth caring much more about.

LumiFree lets you change the "shape" of light

LumiFree is a lighting technology that uses JDI's LCD technology to electronically change how light spreads. (JDI, Japan Display Inc., is a Japanese display maker.) The beam angle ranges from 10 to 50 degrees, adjustable in 100 steps both horizontally and vertically. Combined, that gives you about 10,000 different light distribution patterns.

In other words, you can not only widen or narrow the light, but even change its shape to match what you want to illuminate. That's what makes it groundbreaking.

Just changing the light makes food look this different

Where I noticed the difference most was with food. The tuna above looks dull, and honestly it doesn't look very appetizing. But that's not because the sushi is different; it's because of the light shining on it.

Lights equipped with LumiFree have high color rendering of Ra 90 or above, so the reds, pinks, and even the texture of the fat look far more vivid.

And when you light only the food and leave the surroundings darker, your eyes are naturally drawn to it. We don't taste food with our tongues alone; we take it in with our eyes, our sense of smell, and the whole atmosphere.

I'd want to use it for art and interiors, too

Of course, it's not just for food. If you light only what you want to show off, such as paintings, photos, flowers, or objects, that piece naturally becomes the star of the room.

A wide beam for a wide painting, a tall beam for something long and narrow. Being able to change the light distribution to match the object is something only LumiFree can do.

The downsides are price and installation

On the other hand, the LumiFree spotlight I used requires a lighting track, and it's more expensive than a typical LED spotlight.

Personally, I think it would be even more interesting if it could work with Philips Hue, SwitchBot, and the like, and automatically change even the light distribution to match scenes such as "Dinner" or "Movie."

What I felt most after using LumiFree is that lighting isn't just for making a room bright; it decides what you want to show. Even without replacing any furniture, simply lighting your food, paintings, or plants properly can greatly change the impression of your home. Going one step beyond "lighting just needs to be bright" and paying attention to the light itself: LumiFree is a light that reminded me how enjoyable that can be. (Hidenori Kimura, tech journalist)

This article was originally published in Japanese on Yahoo! News Expert in September 2026, and has been restructured and expanded. Prices are as of that time.