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  • Overall Rating: 4
  • Price: 4
  • Quality: 4
  • Ease Of Use: 3
  • Usefulness: 4
Focuses light into a narrow line – 23.0mm Optics/Light Diffusers (Glass/5-Pack) Reviews

posted by bigricesack on 01/08/2010 Certified Owner

Involvement:Expert (understands the inner workings) - Ownership:less than 1 day

This lens performs a function that is otherwise hard to find: it focuses light into a line or rectangular shape. This is good for a bike light, were you want to be visible from front left and right but do not care much about being visible from above or below.
The lens needs some distance from the LED: approximately a centimeter between LED dome and the back of the holder. The problem is the holder then shields a lot of light. So it is better to use this lens without the holer.
I will use theis lens (without holder) in front of the lens sku.1920. This gives a beam that is suitable for a bicycle. sku 1920 feeds nearly all light from the LED forward, and sku 1918 mages it into a rectangular beam.
Use it to make a wide(r) beam.


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