<VV> LED 1157- R tail lights

[jvhroberts at aol.com]

Au contrare!! The color of the LED potting material has little to do with color they emit. Most are encapsulated in clear epoxy, but the color they emit is determined by the LED chip itself, what material, what kind of doping, crystal orientation, ratio of constituents, etc. Heck, even the chip itself isn't the color of the light it's designed to emit! Red through amber look light brown under a microscope, true green through deep blue look grey, and white LED chips are coated with a yellow phospor coating! 

Being an electronics geek as one of the hats I wear, here's a site with TONS of LED info:

http://members.misty.com/don/ledx.html

http://ledmuseum.home.att.net/

So, if you're REALLY interested, go explore!! If you're not, it'll be great for those sleepless nights...

John

-----Original Message-----
From: Ron <ronh at owt.com>
To: Mike Kost <vairmike at sbcglobal.net>; VV <virtualvairs at corvair.org>
Sent: Mon, 12 May 2008 12:21 pm
Subject: Re: <VV> LED 1157- R tail lights



But, a clear LED is white!

RonH

----- Original Message ----- 
From: "Mike Kost" <vairmike at sbcglobal.net>
To: "VV" <virtualvairs at corvair.org>
Sent: Monday, May 12, 2008 4:43 AM
Subject: Re: <VV> LED 1157- R tail lights


> That would be true of traditional incandescent bulbs but LEDs produce
> monochromatic light  therefore only red light is being produced and no
> filtering occurs.
>
> Mike Kost
>
> Ron wrote:
>> Yes, but a red bulb behind a red lens is only double filtering the
>> light so what have you gained?  The red bulb only is colored red and
>> wouldn't need to be so if it produced only red light waves.
>> RonH
>>
>> ----- Original Message ----- From: "Mike Kost" <vairmike at sbcglobal.net>
>> To: <virtualvairs at corvair.org>
>> Sent: Sunday, May 11, 2008 9:18 PM
>> Subject: Re: <VV> LED 1157- R tail lights
>>
>>
>>> Because anything other than red is a waste of energy. Only the red light
>>> will pass through the red lens. White LEDs have 3 LEDs in there to make
>>> the white light. Red is a natural color for LEDs so there should be a
>>> minimum loss of light energy. The problem with most of the 1157 LED
>>> replacement bulbs is that they have light output from the top of the
>>> bulb while the Corvair configuration requires light output from the
>>> side.
>>>
>>> Mike Kost
>>>
>>> Ron wrote:
>>>> OK, I give up!  Why would anyone use red bulbs behind a red tail
>>>> light lens?
>>>>
>>>> RonH
>>>>
>>>> ----- Original Message ----- From: "Frank Maloof"
>>>> <corvette at velocity.net>
>>>> To: <virtualvairs at corvair.org>
>>>> Sent: Sunday, May 11, 2008 4:53 PM
>>>> Subject: <VV> LED 1157- R tail lights
>>>>
>>>>
>>>>
>>>>> any one useing them , Good ? Bad ? ,advanced Auto has 2 for about $16.
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