Systems and methods for generating and modulating illumination conditions

A lighting fixture for generating white light, comprising:

• a plurality of component illumination sources, said plurality including component illumination sources producing electromagnetic radiation of at least two different spectrums, each of said spectrums having a maximum spectral peak outside the region 510 nm to 570 nm;
• and
• a mounting holding said plurality, said mounting designed to allow said spectrums of said plurality to mix and form a resulting spectrum;
• wherein said resulting spectrum is continuous within the photopic response of the human eye;
• and
• wherein at least one of the plurality of component illumination sources has a maximum spectral peak greater than 700 nm.

A lighting fixture comprising:

• a plurality of LEDs, each of said plurality adapted to produce one of three preselected spectrums, each of said spectrums having a maximum spectral peak outside the region bounded by 530 nm and 570 nm;
• wherein the lighting fixture is configured such that additive interference of said spectrums results in white light that can be controlled to produce white light within a range of color temperatures;
• a controller enabling a particular color temperature within said range of color temperatures to be selected, and a signal to be generated representing that color temperature;
• and
• a processor in communication with said plurality of LEDs, said processor capable of receiving said signal from said controller and controlling the intensity of each of said plurality of LEDs in response thereto.

A lighting fixture for replacing fluorescent tubes comprising:

• a mounting;
• at least two component illumination sources mounted on said mounting;
• a connector mounted on said mounting, said connector capable of connecting with a device adapted for holding fluorescent tubes to receive power from said device and provide power to said at least two component illumination sources;
• and
• a control circuit for controlling said at least two component illumination sources, wherein said control circuit comprises a processor.

A lighting fixture for generating white-light, comprising:

• a plurality of component illumination sources including at least two white LEDs configured to generate electromagnetic radiation of at least two different spectrums;
• and
• a mounting holding said plurality, said mounting designed to allow said spectrums of said plurality to mix and form a resulting spectrum;
• wherein the visible portion of said resulting spectrum has intensity greater than background noise at its lowest spectral valley.

A lighting fixture for generating white light, comprising:

• a plurality of component illumination sources including at least one white LED, said plurality including component illumination sources producing electromagnetic radiation of at least two different spectrums;
• and
• a mounting holding said plurality, said mounting designed to allow said spectrums of said plurality to mix and form a resulting spectrum;
• wherein each spectral valley wavelength of the resulting spectrum within a photopic response of a human eye is less than a maximum spectral peak wavelength of the resulting spectrum.

An apparatus, comprising:

• a device adapted for holding fluorescent tubes;
• and
• a lighting fixture for replacing fluorescent tubes, the lighting fixture being coupled to the device adapted for holding fluorescent tubes and comprising:
• a mounting;
• at least two component illumination sources mounted on said mounting;
• a connector mounted on said mounting, said connector capable of connecting with the device adapted for holding fluorescent tubes to receive power from said device and provide power to said at least two component illumination sources;
• and
• a control circuit for controlling said at least two component illumination sources, wherein said control circuit comprises a processor.