I have proven the 4" Glimpse equivalence to a 100 watt incandescent in many unambiguous side-by-side comparisons, including this, my first:
100 watt incandesce
It is tragic when this Glimpse fully-revealed directional LED light is packaged as equal to a useless 45 watt bulb. Little wonder it is so poorly known, and not yet respected.
The 4" Glimpse diodes are tightly spaced on a simple board, slightly recessed within the lens frame. This four-year-old technology is now ancient, yet I know of no better light for its purpose. Know that it must be mounted on an air-tight box, else lens and mounting screw keys shine, attracting bugs. Despite defects, every lighting professional should experience this light. I recommend purchase at LED Lighting Wholesale . Look for then, and promote something better, in current technology.
Who will deliver a consumer luminaire with this better Samsung LED board of about 450 lumens?
114 lumens per watt
62 x 5.7 mm (2.4" diameter, 0.22" thickness)
The diodes are distributed better than Glimpse, and will be less glaring for same lumens.
I do find the source. Buy the boards here:
Who buys boards in this way, 180 minimum order? Please let it be someone who will package with least heat sink mass, a simple covering lens, push & pluck audio-jack connectors, and by-room DC wiring with in-wall conversion from house power. Can we move in this direction, away from stupid light bulbs, absent leadership for standards, as in a new L Prize?
This is my better L Prize vision:
A proposal to US DOE? Never acknowledged. Some Booz Allen Hamilton contractor surely put it in the trash. Someone in Arlington answers if you call in follow-up. A real person, but without any options.