Our LEDs

LED

LED looks to be the best option for at least the next ten to fifteen years because of constantly improving efficacy.

Current lighting technology allows for over 200 lumens per watt and improving but theoretically could get to 683 lumens per watt.

That would allow Horizon LED’s 150w LED fixture to be – theoretically – replaced by a 34 watt LED fixture in time.

OLED (organic LED) uses LED technology but comes in flat (and bendable) sheet.

Used in devices like your cell phone, it has proven to be less valuable for general lighting.

Laser light can be carried by fiber optic tubing then spread with an optical system to distribute in needed areas.

Laser is very expensive at this point but may become a viable general lighting option in the future.

400w Metal Halide – 460w (with ballast) – 36,000 Initial Lumens – 20,000 Hour Life
Metal halide lamps are omni-directional. Light is cast horizontally and vertically so reflectors must be used.
As much as 30% of light is lost because of “reflective bounce” and lamp block.
High lumen depreciation of source. 20% of light is lost around six months. 50% of light output is lost after 2-1/2 years.
36,000 (initial lumens) – 7,200 lm (20% depreciation) – 8,640 (30% reflective bounce) = 20,160 (lumen output after six months)
Efficacy after six months: 20,160 lumens ÷ 460 watts = 43.83 lumens per watt
Maximum Warranty – Two years on ballasts and one year on lamps

Fluorescent – 6-lamp 54w T5HO – 351w (with ballasts) – 27,260 Initial Lumens – 25,000 Hour Life
Fluorescent lamps are also omni-directional. Light is cast horizontally and vertically so reflectors must be used.
As much as 30% of light is lost because of “reflective bounce” and lamp block.
Better lumen depreciation of source. 4% of light is lost around six months. 6% of light output is lost after 2-1/2 years.
27,260 (initial lumens) – 1,090 lm (4% depreciation) – 7,851 (30% reflective bounce) = 18,319 (lumen output after six months)
Efficacy after six months: 18,319 lumens ÷ 351 watts = 52.19 lumens per watt
Maximum Warranty – Five years on ballasts and three years on lamps

Horizon LED 1st Star 160 Luminaire – 156 watts (with driver) – 24,975 Initial Lumens – 100,000 Hour Life
LED fixtures are directional. 100% of light is directed out of the fixture.
No light loss because of “reflective bounce” or lamp block.
Best lumen depreciation of source. 0.1% of light is lost around six months. <2% of light output is lost after 2-1/2 years.
24,975 (initial lumens) – 25 lm (0.1% depreciation) – 0 (0% reflective bounce) = 24,950 (lumen output after six months)
Efficacy after six months: 24,950 lumens ÷ 156 watts = 159.94 lumens per watt