Nissan LEAF SV Headlights (Deep) Visual Inspection & Analysis of CSP LED, LL Halogen, & Amber Bulbs!
Channel: Aaron Schwarz
Date: 30/04/2023

After upgrading the H11 DRL bulbs to CSP LED in "golden yellow" 3000K the headlight was visually inspected in bright early morning weather on a clear sunny day to take note of the dimpled DRL projector lens, the reflector & its 55w-LL 9005 Halogen for the high-beam function & the 18w halogen amber 1157 market/ turn signal bulbs in the headlight assembly module. 

This deep dive visual inspection part of considering the optical pathway of light & how light is projected from the head lighting into the world to provide illumination to enhance driving safety by lighting up what is ahead on the roadway, especially in dark conditions.

Headlights & turn signal lamps provide a visual indicator to other motorists, pedestrians, cyclists & other people near the roads of the vehicles presence, by way of human sight as many animals have a visual sight sensory system (eye, retina, fovea, B&W rod cells, color cone cells in RGB)(tetrachromatic women have and additional Y cone receptor) able to detect light with great precision over moderate distances, sometimes up to 10 miles or more in clear conditions. SHARP Quattron TV's have red, green, blue, and yellow pixels, while the vast majority of other displays used RGB only. After 40 miles, atmospheric disturbances make clear visual observation a challenge & even the curvature of the Earth causes ships that far away from the short to disappear shrinking away into the horizon. Human vision the only sensory system that works with great precision over moderate distances, while hearing next in terms of range, then smell, then touch & then taste, in terms of range of sensing performance. 

What's even more amazing is what the human brain does with sensory input signals form our senses to make sense of the world around us in real time with inner mental projections made with memories of what we already know about the world, such that what a person see's or senses is largely sculpted by their life experiences & how long they have been alive & how much they know, and many other lifestyle & social & genetic factors that influences the mind, brain, soul, spirit, body, epigenetic & flora biota elements in the macrobiotic environments of the human body, like gut ecology that influences immunity & digestion strongly, with huge implications for effectively curing diseases of the gut in medicine. 

The headlight assembly made largely of optically clear injection molded plastics, polymer gasket adhesive sealants, electroplated plastics, glass lens, metal brackets & mounting fixtures to hold the OEM Halogen 55W-LL DRL H11 bulbs of which 88% of the input power converted to heat by the tungsten filament, such that halogen bulbs can get as hot as 1500 C or over 2000 F enough to melt or burn or ignite many materials, and way above the melting points of most plastics. 

The 9005 high beam bulb & its holder similarly hot during operation requiring the mount to be made from metal. 

The bulb socket for the 1157 amber turn signal runner lamp a metal bayonet mount since the 18w halogen gets very warm as well. 

The CPS LED H11 DRL lamps I installed utilize a aluminum & copper heatsink to thermally conduct heat away from the CPS LED Chips toward the bulb base and into the housing area behind the bulb mounting interface where the sealing cup barely clears the wiring to the headlight connector, such that the wires had to be folded down and away & the connector had to be attached to the bulb before inserting the bulb, carefully so as to not damage the wires. The upgrade which could have taken under 5 min thereby took about 15 minutes.