The lens is heavy but solid, for this price very well manufactured. Borders have a good finish; not too rough. Good for high power Led light focus.
Good glass quality, no air bubbles or visible defects. Even it is clear glass, the surfaces may show some lines in your picture. Checked with a microscope, it seems that the surface is not 100% flat. It'... Read more
Looks to be very clear glass. I bought one, and it has much, much less molding defects than the one I got from one another place with a word "Good" in its name. Used it in a homemade flashlight. It's not perfect, but I don't think, that molded lens could get much better. The outer rim is not round, but has some irregularities, that makes it ... Read more
It seems very well built, I couldn't find any con. I've bought for a project of a diving flashlight. Using underwater won't account too much weight but you should consider it's weight for other purposes. A little bit heavy, but if this isn't a problem for your project it's great! It can be used as a nice paper weight with the extra function of a magnifing ... Read more
A three inch diameter aspheric lense for under 10 dollars! I used this lense in a modified mag light. Installed an SST 50 emitter on a fabricated silver and copper heat sink, made an electronic PWM ballast to run at seven amps, powered it with two D cell lithium ion batteries and the beam proected through this aspheric lense is positively unmatched ... Read more
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