Received the 25 degree beam lens today from www.cutter.com.au and installed it in the Task Force 2 C cell -3 watt light. Its a fit and while not perfect it does function well . It also fits in the Advance Auto Parts 3 watt led light. With the 25 degree lens the beam is quite a bit broader and unifirm with virtually no hot spot similar to my Nuawi 301-5 watt light although not as many lumens for sure. Other lenses with different beam profiles are available and while they will fit there are some differences which may show up in the narrow beam (10 degree). The slight recess along the front surface means the lens will not sit back as far in the housing as the o ring fits in the recess along the circumference. The other difference is that the depth of the this lens is shorter than the stock unit by at least 1/8 inches and the central recess depth into which the led fits is shorter by about the same amount. But it does fit . The specs with the actual dimensions are available at this site as a pdf file. file:///C:/Documents%20and%20Settings/Owner/Desktop/kepl35_luxeon.pdf
Additional info on beam patterns are at this site
file:///C:/Documents%20and%20Settings/Owner/Desktop/kepl35_luxeon_test_report.pdf
The only other difference is that there is a hole in the center of the lens on the front side of the lens. The stock lens is flat with no central hole.
The 10 degree beam is probably closer to the orginal lens but with the changes in configuration its not clear if it will be 10 degrees when installed.
I wanted a broader beam and this lens fits that bill.
Heading to the Future at Light Speed
Additional info on beam patterns are at this site
file:///C:/Documents%20and%20Settings/Owner/Desktop/kepl35_luxeon_test_report.pdf
The only other difference is that there is a hole in the center of the lens on the front side of the lens. The stock lens is flat with no central hole.
The 10 degree beam is probably closer to the orginal lens but with the changes in configuration its not clear if it will be 10 degrees when installed.
I wanted a broader beam and this lens fits that bill.
Heading to the Future at Light Speed