Posts Tagged ‘Color LEDs’

When LEDs first emerged, I was one of the many who expressed the opinion that a lighting system that could dim to a warmer CCT, imitating incandescent lamps, would be desirable. I want to take this opportunity to retract that original opinion and thought. I’ve played with it, seen the products available that do it, and have experimented with the approach… and can say unequivocally that I really don’t like it at all.

One of the problems with incandescent dimming has always been the patchwork of CCTs one gets through a space from different dimmer settings for the various products in a room. This has never been a good thing. Further, the change in CCT of an old school incandescent lamp is significantly different than halogen lamps, as it the character of the color. I for one have fallen out of love with the old incandescent lamp long ago. Over the last 20 some-odd years, I have come to use halogen sources over all incandescent forms, preferring the cleaner white color over that yellowy dinginess of the incandescent lamp. Incandescent lamps (non-halogen) produce a decidedly ugly color that I personally feel is misrepresented by their high CRI rating. The fact that the CRI formula will show a dimmed incandescent lamp with the same high CRI number, even when it very noticeably distorts color in a space, is a condemnation of our poor color performance metrics, not an indication of this lamps superior color performance. (more…)

office

Now that the office is 100% LED, including a retrofit of the pendant, a retorift/remodel of a Kovac Feather task light to LEDs, and a custom copper tubing linear wall washer - all white now... its time to step up and get into this color thing head first.

I miss the simplicity of low voltage halogen lamps. Must be getting old… A lamp, socket, transformer, a few bits of shiny metal, a switch from anywhere, maybe a sliver of glass, a transformer, couple lengths of wire… clean and simple. LED projects are a bit more complex, especially when you want to incorporate color in the mix. I tried a few white only LED designs and found them… well, common and boring. I’ve retrofit most everything to LEDs, from decorative to work lighting using white LEDs, my office is 100% LED now, the house is now 75% LED, 20% CFL, and the remaining halogen lamps, soon to be disappeared in favor of new LED products of my own invention. This has all been fun, but the end result is not that much more than I had, short of the energy saving. This is not what I believe in, it’s just the easy way out.

So, the next step…  (more…)

For screw-based retrofit applications, this lamp and remote make color changing painless.

For screw-based retrofit applications, this lamp and remote make color changing painless.

This is a solid-state product that delivers color changing modes, fixed color modes, remote control and acceptable brightness in a simple screw-in package. The lamp contains the logic and costs about $60, while the remote is less than $20. The remote can control several lamps, so their is only a need for one per application. We selected the narrow 30 degree beam pattern for a test application. A wider 60 degree beam pattern is available.

The size of the lamp unit is compact, roughly the scale of a PAR20 halogen lamp. At 5 watts power consumption, and relatively low light output, this is less about energy than it is about fun and adding some color using existing luminaires. (more…)