Blue-enriched office light competes with natural light as a zeitgeber

Implementing a Practical Light Transmission System in order to Lighting an Office with Zero Energy Consumption

One of the recently considered applications of fiber optic, in their usage in building lighting systems. In this research, in order to reduce energy consumption, by transmission of sun light from the roof to the desired place (i.e. an office), the required standard luminance is produced. The main aims of this research are : 1. Reduction of energy consumption. 2. Making the place compatible with...

Implementing a Practical Light Transmission System in order to Lighting an Office with Zero Energy Consumption

One of the recently considered applications of fiber optic, in their usage in building lighting systems. In this research, in order to reduce energy consumption, by transmission of sun light from the roof to the desired place (i.e. an office), the required standard luminance is produced. The main aims of this research are :1. Reduction of energy consumption.2. Making the place compatible with t...

Blue light special in a red light district.

Plant blue-light receptors.

Plants have several blue-light receptors, which regulate different aspects of growth and development. Recent studies have identified three such receptors: cryptochrome 1, cryptochrome 2 and phototropin. Cryptochromes 1 and 2 are photolyase-like receptors that regulate hypocotyl growth and flowering time; phototropin mediates phototropism in response to blue light. In addition, phytochrome A has...

Phase advancing the human circadian clock with blue-enriched polychromatic light.

BACKGROUND Previous studies have shown that the human circadian system is maximally sensitive to short-wavelength (blue) light. Whether this sensitivity can be utilized to increase the size of phase shifts using light boxes and protocols designed for practical settings is not known. We assessed whether bright polychromatic lamps enriched in the short-wavelength portion of the visible light spec...