optical for narrow of beam

[juanma666]

Hello.

These are my modules 532nm/50mW and 635nm/200mW.

I want to know if I can to narrow of beam of the 635nm/200mW with some lens type or similar.


Best Regards.
Juanma.

 

[Blord]

The G2/G1 lens can give you narrower beam because of the shorter focal distance. The lens sits closer to the diode and therefore make a narrower beam.

 

[RA_pierce]

The G2/G1 lens can give you narrower beam because of the shorter focal distance. The lens sits closer to the diode and therefore make a narrower beam.

Only near the aperture.
The divergence angle will increase.

 

[Blord]

Only near the aperture.
The divergence angle will increase.

True but at room like distances the beam is narrower. I don't know what distance the break-even point is.

 

[juanma666]

Hello.
The room has about 8 meters long and I want to put a mirror to reflect the beam; so they are 16 meters in total.

Where I can buy optic G1/G2?
What do you differ there are among them?

Best regards.

Juanma.