Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×

Thread Tools Search this Thread Display Modes
Old 03-26-2007, 12:39 PM   #21
Rivet Master
2006 25' Safari FB SE
Huntington Beach , California
Join Date: Apr 2006
Posts: 2,293
Images: 2

Originally Posted by bhayden
What about lens covers. I realize this isn't the optimal solution but if the choice of LEDs is fixed can the light be "toned down" with a plastic diffuser?

-Bernie are headed in the right direction...very good question.

LEDs are perfect light sources for shaping beam patterns using a fairly new form of optics known as Non-Imaging Optics or NIO. The primary function of the NIO is to collimate the light which is emitted by the LED. An LED with a lambertian emission pattern is best for this type of optic. I know this is pretty techy, but for those who are really interested I will continue. Once the light is collimated (the beam pattern is restricted to less than 5 degree spread), then a diffuser can be placed in front of the light to produce the desired final light pattern. A holographic diffuser is best for this job due to its high transmission value, in other words 90% to 95% of the light passes through the beam shaping diffuser. Conventional diffusers are far less efficient, many allowing less than 40% of the light to pass.

Up until recently, most LED products for the consumer market have had either no or poor performing optics. This is changing as the market matures and it is probable that manufacturers will start providing optics to match the application as opposed to just throwing out light in all directions.

3M has been the pioneer in high transmission plastic diffusers (similar to the material used on a laptop or PDA) and other start ups are producing similar product giving the manufacturers new opportunity to give us new designs.

In regards to a practical example of the optical techniques, take a look at the newer generation of LED lamps in the automotive market, great effort has been made in smoothing out the illumination of an LED brake lamp to eliminate the spotty look of LEDs. My guess is that this is the type of optic that the majority of our members would prefer when implementing LEDs into their interior lighting scheme.

Maybe techy, but I hope it throws a little more light on the subject.

TIMEMACHINE is offline   Reply With Quote
Old 03-26-2007, 06:11 PM   #22
Rivet Master
HowieE's Avatar
1991 34' Excella
Princeton , New Jersey
Join Date: Aug 2003
Posts: 7,069
Images: 12
Originally Posted by TIMEMACHINE

Maybe techy, but I hope it throws a little more light on the subject.
Keep the "techy" coming because the LED sellers are short on Tech in thier advrtising and it's information we need.
2004 Excursion 4x4
1991 34 ft. Excella +220,000 miles, new laminated flooring, new upholstery, new 3200 lbs axles

HowieE is offline   Reply With Quote
Old 04-09-2007, 05:33 PM   #23
1 Rivet Member
1964 24' Tradewind
Regina , Sask.
Join Date: Nov 2006
Posts: 14
WOW LED'S I have jut purchased two 7 inch tail lights for my 64
Tradewind. Looks like they should mount very nice without changing the look of the rear of the unit. They are BRIGHT. Purchased from Princess Auto Will post pics later Thanks
Fishnstream is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Aluminum Trim Source? melprice Cabinets, Counter Tops & Furnishings 6 09-08-2009 06:19 PM
Online source for classic cars & more 83Excella Off Topic Forum 4 03-05-2007 09:02 PM
source for high-end linoleum? Dave Cole Floor Finishes 3 10-02-2002 02:29 PM
Source of "Vintage" Dometic refer parts? 74Tradewind Refrigerators 3 08-16-2002 08:42 AM
Another aluminum source 83Excella Ribs, Skins & Rivets 0 05-14-2002 11:34 AM

Featured Campgrounds

Reviews provided by


This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.

All times are GMT -6. The time now is 12:55 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2022, Jelsoft Enterprises Ltd.