Kozushima Streetlight Upgrade

Kozushima Village (on a small island south of Tokyo, Japan) replaced over 400 streetlights, with stunning results.  The new lights show wonderful shielding.  Not only do they emit no light to the sky above, but are shielded to block the light toward a person on the ground who is standing at a distance.

Kozushima Streetlights BEFORE

BEFORE, Kozushima Village, Japan

Kozushima streetlights AFTER

AFTER, Kozushima Village, Japan

Cities in Colorado could learn from Kozushima’s experience.  The new lights follow several of the IDA’s recommendations: 

1.  Shielding
2.  Lower intensity
3.  Color (2700 degrees K)
4.  LED technology

IDA Recommendations

 

 

Join the International Dark-sky Association

IDA members with a Colorado mailing address are automatically part of the Colorado chapter. 

Colorado chapter members get a monthly newsletter and other benefits.

Leave a Comment

Your email address will not be published. Required fields are marked *