Register free!

 
 
Thread Tools   Display Modes
Prev Previous Post   Next Post Next
  #20  
Old 06-09-2012, 01:01 PM
steveparrott steveparrott is offline
Sponsor
 
Join Date: Jun 2005
Location: Tampa, FL
Posts: 975
Quote:
Originally Posted by JimLewis View Post
Here's another one we did not too long ago with the Kichler LED. You don't like the color of the lights in this photo?

(By the way, this is with no lenses and no photo enhancement. This is the true color that came out of the Kichler 15742)

.
One important aspect of LED color is consistency across the beam. Not sure if it's an artifact of the photo, but if you look at the color of the square columns, you'll notice it changes from the bottom (edge of the beam - brownish) to the top (middle of the beam - more white).

It's easy to see this if you project the light onto a poster board. I've done this in our lab and the brownish-orangish rim is clearly visible (with some mfgs). I measured color temp across the beam and it changes drastically near the rim. This is a serious problem with lighting columns and light-colored walls.

The problem is evident with some chip mfgs. and is primarily caused by irregularities with, or presence of, poorly designed phosphor coatings on the chip. Keep in mind that many mfgs. save money by purchasing cheap chips.
__________________
Steve Parrott
Communications Director
VOLT® Lighting

813.978.3700
stevep@voltlighting.com
www.voltlighting.com



Professional Quality at a Great Price
Reply With Quote
 

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump






Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ©1998 - 2012, LawnSite.com™ - Moose River Media
All times are GMT -4. The time now is 04:27 PM.

Page generated in 0.19558 seconds with 9 queries