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- Sep 3, 2013
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- 166
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I'm new to laser's and i bought a host(from ebay) with a 3 elements glass Lens but it only has a focus point of like 5cm with a circle dot, and if i screw the lense in more it's focus point get's further away(not much only like 3cm) but it spreads out like a line effect And another thing i noticed was the beam crosses like the picture i drew below (why does that happen)?
So my question is what type of lense would i need to focus like this.
Also can people tell me about all the different types of lense, i have seen people on the forms say like G-1,G-2,G-3 what is the difference?
So my question is what type of lense would i need to focus like this.
Also can people tell me about all the different types of lense, i have seen people on the forms say like G-1,G-2,G-3 what is the difference?
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