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FJR Motorcycle Forums
FJR Parts & Accessories Discussions
LED Replacement Bulbs for Gen 1 Speedo Assembly
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<blockquote data-quote="Fred W" data-source="post: 839795" data-attributes="member: 3828"><p>Yep, that is pretty much the definition of "night vision". When you expose your eyes to shorter wavelengths or a broader spectrum of light the pupils close down to prevent saturating the light receptors (rods and cones) in the retina. Problem is that there is a significant delay before the iris will open back up all the way.</p><p></p><p></p><p>This is a valid point. If your irises are going to already be closed down due to other light sources, such as those you mention, then the higher frequencies of light (blue, green etc.) may make it easier to see the markings on those instruments.</p><p></p><p>I know BMW always put red dash lights in their cars (up until ~y2k anyway) purportedly for the night vision reasons. That doesn't mean it was the best thing to do.</p><p></p><p>Besides, the blue dash looks so cool, yo! B)</p></blockquote><p></p>
[QUOTE="Fred W, post: 839795, member: 3828"] Yep, that is pretty much the definition of "night vision". When you expose your eyes to shorter wavelengths or a broader spectrum of light the pupils close down to prevent saturating the light receptors (rods and cones) in the retina. Problem is that there is a significant delay before the iris will open back up all the way. This is a valid point. If your irises are going to already be closed down due to other light sources, such as those you mention, then the higher frequencies of light (blue, green etc.) may make it easier to see the markings on those instruments. I know BMW always put red dash lights in their cars (up until ~y2k anyway) purportedly for the night vision reasons. That doesn't mean it was the best thing to do. Besides, the blue dash looks so cool, yo! B) [/QUOTE]
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FJR Motorcycle Forums
FJR Parts & Accessories Discussions
LED Replacement Bulbs for Gen 1 Speedo Assembly
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