Light bulb manufacturer Norb has announced the release of the NorbSLEEP light bulb this week to provide a soft, warm, white-color light produced in the wavelengths of natural evening light. According to the company, the new line of bulbs modulate the circadian rhythm.

Like sunset and twilight, NorbSLEEP prompts the body to produce melatonin, the natural hormone that signals it is time to relax, feel drowsy, and fall asleep. It is a dimmable A19 LED bulb with 9 watts, similar to a 40W incandescent bulb, and it fits standard sockets. According to a statement from the company, when used for illumination in fixtures such as bedside table lamps and bedroom overhead lights, NorbSLEEP helps people fall asleep naturally and get a restful night’s sleep.

The company’s daytime light bulb, called the NorbSMILE, illuminates with a white-color light designed with the sun’s “happy” light spectrum that awakens and energizes. It is available as an A19 LED bulb with 11 watts and as a tube light with 18 LED watts. In contrast to regular indoor lights which may cause drowsiness, lethargy or agitation, NorbSMILE supports a positive mood, alertness, energy and productivity.

The daytime bulb is designed for business offices, school and university classrooms and hallways, and the lobbies and meeting rooms of office buildings and hotels.

“We developed Norb (Nutri-Orb) lights to make a positive difference in people’s lives,” Dave MacKenzie, president, Norb and inventor of NorbSLEEP and NorbSMILE, says in a statement. “So many people suffer with insomnia, anxiety, depression, seasonal affective disorder (SAD), and attention deficit. While light is not a cure, the right bio-active light can alleviate symptoms, promote health and boost wellbeing.”