Surefire Backup TIR

[dealgrabber2002]

Anyone knows the degree of the TIR beam? Tried googling but can't find it. Thanks.

 

[dealgrabber2002]

Wow, I am surprised no one knows.

 

[Olumin]

I found this graph online, and it seems to originate directly form Surefire. I've compared the illustration of the MV and REF beams with several of my SF lights and they seem accurate. I don't own a TRI but from the illustration it looks to be about 35 to 40° including spill (compared to 55° for REF), and about 5 to 6° spot. These figures might not be reliable but they are probably not far off either.

 

[dealgrabber2002]

Thank you. I got a few 5° and 10 ° coming in. I think base on what you stated above, I'll try the 5° first.

 

[Megalamuffin]

I love surefire's TIR beam. It makes a measly 5 lumens extremely useful.