HADAR70W* window accessories provides ultimate flexibility. Extremely efficient (typical efficiency: >88%) snap-on window accessories are specifically designed to be used with HADAR70N series TIR lens, but you can mix HADAR70WF accessory also with any HADAR70 TIR lens to achieve the exact beam angle you want.
HADAR70WF smoothens the cut-off and widens the FWHM only by ~1° degree while still having extremely low surface brightness. Try HADAR70WF with HADAR70N, HADAR70M, HADAR70W, HADAR70L main TIR collimators.
See also HADAR70 lens and HADAR70 holder options to find suitable holder for integrating the part with LLH66 / Bender+Wirth, BJB35, BJB50, HEKLA-K or HEKLA-G2 solderless connectors.
See also HADAR70 leaflet or download full Datasheet