Oval / Oblong LED sub lenses and optics?

Gunnar

Newly Enlightened
Joined
Sep 7, 2005
Messages
33
Do anyone use them on bike lights?
Are sub lenses any god on 3 LED optics?
Is there any shots on an oval beam on the web?

/Gunnar
 

n4zou

Newly Enlightened
Joined
Sep 4, 2007
Messages
86
Location
Weaver, AL
Do anyone use them on bike lights?
Are sub lenses any god on 3 LED optics?
Is there any shots on an oval beam on the web?

/Gunnar
50 lumen 1-watt Luxeon star in matching Fraen elliptical optics screen shot.

Off road screen shot.

Fraenellipticaloptics.jpg


On road screen shot.
Hpim0313.jpg

Keep in mind I power it with a dynamo and need to recharge the batteries as I pedal along as well. An LED with a higher lumen rating will produce a lot more light. Here is a photo of my light.
Hpim0312.jpg
 
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rideatnight

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Joined
Sep 3, 2007
Messages
15
I used elliptical lenses on my first attempt - aligned vertically. I was blinding cyclists coming the other way. Using it for wide instead, I wasn't pleased with the throw, it seemed too much light was going off to the side. Two spot lenses give me enough spill to the side for road riding.
 

n4zou

Newly Enlightened
Joined
Sep 4, 2007
Messages
86
Location
Weaver, AL
rideatnight what lens did you use ? The best for bike are elliptical 10*x20* (so called 15*).
That's what I used; Luxeon Fraen 10 X 20 and I found it perfect for use on my bicycle.

I found a stepper motor capable of providing 12-volts @ 1000mA with less drag than my cheap bottle dynamo. Now all I need to do is figure out how to mount and drive it from a wheel. More info here…
http://www.c-realevents.demon.co.uk/steppers/stepmotor.htm
 
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