Muna 2010, Black Dog Grow Technologies yakagadzira chiedza chekutanga che LED, icho chaiva ne ... uye yakakwirira-yepamusoro-yakazara-yekutengesa kushambadzira inokura chiedza.
Maererano nesangano, "chiedza chebhuruu" muchiedza che LED chinogona kukonzera kukanganisa kune retina yeziso, uye ... kana inoshandiswa usiku kana munzvimbo ine rima.Mamwe marambi e LED anogona kukonzera "musoro, kuneta kwekuona uye nepamusoro ...