DTR-G-8 Broadband Glass Laser Collimation Lens – WHY COMPROMISE..HAVE IT ALL!!!

Description

FINALLY NO MORE
COMPROMISING LARGE POWER LOSSES FOR A REDUCED SPOT SIZE OR EXCESSIVE STRAY LIGHT
PROJEC
TING
AROUND
THE SPOT!!!
DTR-G-8 Glass
Collimation
Lens
.
Broadband AR Coating 400nm-700nm
It’s being called the “miracle lens”. This lens is a long focal length single element glass lens with a broadband AR coating. It has a 90% pas efficiency which is amazing for a longer focal length lens. It does an amazing job of cleaning up stray light around the projected spot with many common diodes caused by the small amounts of uncollmated light escaping the lasing cavity reflecting off things like the edge of the emitter, walls of the module or inner walls of the lens barrel. causes things like the ghost box image that is projected under the spot generated from the newer very high power diodes when using a short focal length single element lens like the DTR-G-2 or countless other similar lenses being sold as G-2’s. It creates a greatly reduced spot size while maintaining a 90% pass efficiency compared to the 96% pass efficiency of a DTR-G-2.
I will add more specs, testing data, comparisons with various common diode
/lens combinations and
pictures
of
spot
with various diodes to come as soon as I get to them. In the mean time see the threads over on the forum linked above for lots of community testing, comparisons with other common
lenses
, other observations, questions and general
discussion.
Check out the this link to the original thread on over on LPF
forum
.
New DTR-G-8 lens
Specifications
(PGM)
Precision Glass Molding
Glass Type: Single Element A
spheric
(EFL
：8mm) (
NA
：0.20)
Housing：M9X0.5mm
AR Coating
：Broadband(400nm-700nm)
Some examples of spot shape using a 1W 520nm Diode and several common lenses.