snipinglight
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Today I look at the Cree under the microscope and found that under the acrylic lens is some kind of silicon gel. Can anyone confirm this and what is the purpose of the silicon gel?
What is under the Cree lens
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snipinglight
Newly Enlightened
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Between the metal ring and clear acrylic lens u can use a piece of paper to pick some of the gel out, but only a bit of it if you try it under the microscope
taschenlampe
Enlightened
The lens should be a "Integrated fused quartz lense"
Tom
Tom
snipinglight
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What are u talking about?
ginaz said:
Led_Blind
Enlightened
Its glass 
Tritium
Enlightened
Its "SUPER" glass. Fused quartz can be heated to red hot and plunged into water without cracking or shattering. (Not relevant to flashlights but interesting)
Thurmond
Thurmond
65535
Flashlight Enthusiast
Propably the light russel.
Tritium
Enlightened
Russell52 said:
Yes I have. I had one emitter that had a "fracture" in the silicon gel. This caused a terrible beam as it was acting like a beamsplitter and sending light in all kinds of directions. Firm downward pressure after applying a "tiny" amount of heat from a heat gun "healed" the fracture. Great beam now.
Thurmond
IsaacHayes
Flashlight Enthusiast
I've seen several glass domes on crees that varry in smoothness. Some have rings or ridges on them I guess from how they are molded? The led has silicone gel underneath so the lens can "float" with varying temperature.
