Photosonix stimulation glasses and all you wanted to know about the choices.
The stimulation glasses used in light/sound systems are usually like normal sunglasses, with some sort of light source mounted in front of the eyes. This page discusses the various choices available in light/sound glasses and the advantages and disadvantages of each.
Physical stuff: The glasses should be light and should fit you comfortably. The cord to the electronics unit should be long enough that you can lean back in a chair without pulling the system off the table. A very flexible cord is nice. Many glasses have the internal electronics riveted to the glasses. A single rivet in the center, the weakest point of the glasses, leads to early breakage. Photosonix glasses use two rivets offset from the center, avoiding the weak spot.
Light source: Two kinds of light sources are available, LEDs (light emitting diodes) and incandescent bulbs (special flashlight bulbs).
Until early 1998, LEDs were always monochromatic, with red and green the most common colors and yellow and orange as options. Red LEDs are the brightest, and while the eye is most sensitive in the orange/yellow part of the spectrum red seems to give stronger stimulation. Some people find red harsh, even with the intensity turned down, and as a result prefer green. Some manufacturers have mixed LED colors in an effort to approximate broad spectrum light. All LED based light frames are designed to be used with the eyes closed -- the eyelids diffuse the light and add to the experience, unless otherwise specified.
LEDs conduct electricity in one direction only, so the polarity of the drive circuitry (either "Common Ground" CG or "Common Power" CP) in your Light/Sound system makes a difference. When ordering add-on glasses, be sure to specify the manufacturer and model of your light/sound system. See list of manufacturers and models polarity reference at the end of this page...
Incandescent bulbs give broad spectrum light (tending toward yellow), but have the disadvantage that they involve heat, so they cannot turn off and on quickly. Their switching performance degrades rapidly above 15 Hertz or so. Incandescent bulb glasses are usually made with a translucent shield over the bulbs, allowing the glasses to be used with the eyes open.
The circuitry needed to drive incandescent and LED lights is different, so a "switch" in hardware or software is required if the same system is to drive both types. Beware of systems that claim to do both without a switch.
In early 1998, white LEDs became available, due to a new manufacturing process involving phosphorescent dyes and luminance conversion. A breakthrough in technology we felt was important to introduce. Thus, the Photosonix TruWhite glasses using the new white LEDs. The true white spectrum LED lights (4 per eye) take the stimulation to a deeper and more intensive level. The TruWhite glasses received rave reviews in initial testing. The TruWhite light frames work on any of our models but are at their best and most bright on the Nova Pro or Galaxy Pro.
The name TruWhite reflects the experience and the fact that the white LEDs make incandescent "white" lights look quite yellow. The glasses provide a spectacular experience and a significant leap forward in light/sound.
The advantage of the full spectrum white light, combined with the fast response time of LEDs, make a very effective light/sound stimulation source. Put the TruWhite glasses on... close your eyes ...and see just about every color imaginable.
Only one company makes the LEDs and they are more expensive than the regular kind but we think that they are well worth the price.
The initial response for the TruWhite glasses has been great. The TruWhite glasses work with all models and manufacturers of L/S systems (not just PHOTOSONIX), but there are two kinds of polarities, please see the list at the end of this page...
TruWhite $99.00 (+SH)
CoolBlue glasses: another often requested color that is now available in bright blue. The same great features as the TruWhite glasses but in this case a blue color with a soft/cool seductive tone. Blue hue and brightness added a relaxation experience one beta tester called "in the moon realm" and "weightless". This need not mean anything to you now, but try a pair and let us know. This definitely is "see to believe" experience. Available in two polarities, see list at the end of this page...
CoolBlue $99.00 (+SH)
Can't decide? Try the Color Adventure set:
The Color Adventure set is a plastic carrying case with 6 glasses (and actual room for 12) TruWhite, Cool Blue, pvStim Red, Green, Orange/Amber and Yellow. For those that like to experiment with color this is the most economical way to purchase glasses (you save $33.00 on the glasses and get the case for free...). Available in two polarities, see list at the end of this page...
Color Adventure Set $329.00 (+$7.00SH in USA)
All of the above colors are available in pvStim glasses
PvStim glasses offer peripheral vision stimulation. Mounted in a clear lens glasses so you can see through the lens, the LEDs in this model are located in the peripheral vision area, allowing for indirect and softer light stimulation. They are often used in EEG biofeedback, and can be used with the eyes open.
Red, Green, Yellow and Orange/Amber $59.00 (+SH).
TruWhite pvStim and CoolBlue pvStim $119.00 (+SH).
Available in two polarities, see list at the end of this page...
The LumaSoft incandescent white light glasses are also available. These glasses also require a software set up change and the Nova Pro is the only model that offers the option. The LumaSoft have a filter on the front of the lights that creates a soft glow and can be used both with the eyes closed and/or open.
LumaSoft $75.00 (+SH)
"CG" Common Ground and "CP" Common Power polarities
"CG" PHOTOSONIX: Nova Pro 100, Muse, Muse#, Halcyon, ProTutor, Expander, Galaxy and Nova Models; Mind Gear: all models, IQ: IQ 1,2,3 and Jr. model.
"CP" PHOTOSONIX: Nova Pro, Galaxy Pro; Synetic Systems: all models; Mindplace: Orion; DAVID: all models; IQ: IQ Tutor and IQ 9110; Zygon: Mind Quest.