Or a 120° TIR for a mule-quality wide beam: Amazon.com .
uxcell has assloads of TIRs; just look for “uxcell collimator” and you’ll find ’em on Amazon.
Or a 120° TIR for a mule-quality wide beam: Amazon.com .
uxcell has assloads of TIRs; just look for “uxcell collimator” and you’ll find ’em on Amazon.
OP… have you considered light color sensitivity? In my case of traumatic iritis, I was using my red LED lights as well as low-low white light. After a long day working and staring at the computer screen, red lighting was easier on my eyes in the evening.