Why Photobiology?

Important hormonal and neurochemical brain rhythms are maintained by fluctuations of light intensity and spectrum (color frequency). Certain nerves from the eye (retina) go directly to the pineal (hormonal regulating center) and hypothalamus (deep brain regulating center). These nerves have nothing to do with color perception; they have to do with deep brain rhythms. These nerves are the analogue of the Harderian gland found in other species. Recent research in mood show changes with seasons or circadian (timed) rhythms. Other studies suggest that seasonal depression may be reduced by exposure to appropriate light sources, e.g., Dichromatic light.*

Why Dichromatic light differs?

Dichro-color lamps employ internal dichroic interference filters to selectively “separate” the energy radiating from the filament. These filters are composed of materials with different indices of refraction in alternating layers. The filter replaces the bright aluminum coating found on the reflector surface of standard PAR (flood) lamps allowing both visual and non-visual pathways to be employed. Deep brain structures and chemical pathways can adapt toward improved health by using this form of light.

The dichroic filter is on the inside surface of the bulb lens. Reflector surfaces have a bright aluminum coating. The filter produces a specific color by selectively transmitting only the desired wavelengths of light, with virtually no heat absorption. Light of the other wavelengths is reflected back into the lamp. Colors are richer and clearer. In contrast, standard, pigmented color bulbs create the illusion of color by frequency subtraction. The actual color wavelengths are not created. Standard ‘colored lights’ do not have the same health benefits.

Setting up the Dichromatic Bulb. What else do I need?

A clamp fixture (porcelain where the bulb is attached, with a hook to hang on the wall, as this is a very heavy bulb, and a shroud or sleeve to avoid heat contact with the face, base or back of the lamp, found at most hardware, brooding or lighting stores for about $25) rated for 150+ watts is suggested. Positioning the lamp should be easiest hanging from a secure hook.

How best to benefit from the Dichromatic Bulb?

The person sits four to six feet away from the green light for 20 minutes, twice daily. Do not shine the light at the face, best from the side and above the person. This is typically done in the morning and early evening. The person might plan to use this time for deep breathing (abdominal breathing), relaxation reflex, guided imagery, range of motion exercises, or peaceful reading. The person need not (and may find the bulb too bright) to look directly at the light. Green, a balancing color, may be used as much as desired. It is best if these are the sole source of illumination.

Books for additional information:

1. Color Medicine:The Secrets of Color/Vibrational Healing by Charles Klotsche, Light Tech Pub,1993.
2. Light Years Ahead:The Illustrated guide to full spectrum and colored light in mind-body healing by Brian Breiling & Bethany Argide, Celestial Arts, 1996.

Bulbs, when in use, are quite warm, so extreme caution is suggested.