All good questions. +1 ^ That’s a 12mm mcpcb that led is sitting on. The led itself looks like an xp-g2, so you can swap it out with any 3535 size led on a 12 mm mcpcb. I recommend a Samsung LH351D 5000k 90 CRI or a Nichia 219C. You could go with a Luminus sst20 4000k 95 CRI. Either one of those are a direct replacement, but finding one mounted to a 12mm mcpcb might be tricky. Check This Place silver ingot Technology Co., Ltd. 淘宝网 - 淘！我喜欢
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Here’s what you’ll need to improve the lighting quality. No guarantees it will beat the $1000 Zeiss or other brand name scopes, but it will be lots better:
You need a direct replacement LED on a board (the round white thing). You can get those fully assembled, but they aren’t easy to find in that size for a single quantity. Check the links I sent above. A ‘high cri’ LED reproduces colors better, especially red and brownish colors, pancakes them more ‘real’ a 5000K-5700K color temperature makes objects lit up like they were in direct sunlight.
You shouldn’t need to change the lens if you’re using a similar-sized LED with a similar size light emitting surface. Xp-G2 is pretty close to the 219.
Different LEDs will have different beam characteristics: the sst20 has a smaller spot than a LH351D (bigger bright spot). S8nce you are going to be under 10 watts, no need to really worry about heating.
Hope that helps. There are other resources on this forum you can check out also to learn more Info