Horticulture lighting

Types of horticulture lighting
Terminology
Science behind the spectrum
Starting point in choosing LEDs

Horticulture

Types of Horticulture Lighting

Green House
Directional High Bay

Rack Lighting
Linear

Inter Lighting
Linear

Applications

Traditional Technologies

Min Height to Canopy
0.167ft / 0.05m

Min Height to Canopy

DE High Pressure Sodium

Canopy

Typically seen in Greenhouses
Used as supplemental light
10000hr bulb

Fluorescent Tube

Canopy

Typically seen in Vertical Applications
Used as a main source
20,000hr

Benefits to LEDs

Ability to tune spectrum
Optical control
Higher target efficiency
Low radiated heat
Instant

Terminology

Light – The only part we care about

Photosynthesis

Refers to the amount of photons that is available for plants

Spectral range between 400-700nm for which photosynthesis occurs
Often referred to as

Photosynthetic Photon Flux (PPF)

PPF is the total amount of micromoles from

Photosynthetic Photon Flux Density (PPFD)

PPFD is the total amount of micromoles

Spill Light

Spill light is wasted light. Therefore it is imperative to

Spill Light

Putting fixtures next to wall is one common strategy to

Standard PPFD measurements are performed on a 4x4’ grid at the

Science Behind the Spectrum

Predominately two main approaches for LED Horticulture lights:
Red (660nm) and Blue

Chlorophyll a & b
Chlorophyll refers to the pigment used to absorb

Studies were derived from in-vitro on green algae. Higher order plant

Average photosynthetic response of 20+ terrestrial crop plants.
Plants have a broad

Photosynthetic action spectra for the green alga Ulva (two cell layers) and higher

Research is still in its infancy and often conflicting. Many studies

Full Spectrum Lighting

Starting Point in Choosing LEDs

Traditionally LED solutions focused on 440nm and 660nm (blue and red)

Horticulture market has no set methodology as to what is right

Target LEDs

Target LEDs

Target LEDs

SPD: White LEDs

Royal blue (450nm)

Warm White

Far Red (730nm)

Photored (660nm)

SPD: Color LEDs

Mimic the gold standard at much lower wattage
Similar spd distribution to

Reference Design

Roughly the size of a sheet of paper.
4 Modules used in

Wavelength Distribution

Gavita

Reference Design

Horticulture Reference Design (4x Modules)

Gavita 1000W DE HPS

Typical LED Replacement with

XLamp MH Family: Tiny High Bay & LM-80 vs DURIS S

Tiny High Bay (LFI Version) - Lower System Cost High Bay

Key

Tiny High Bay - Lower System Cost High Bay

EMC 7070 package
6k hours of LM-80 published Feb 2016

DURIS S 10

LM-80: DURIS S 10 (P7LP32.EM) vs XLamp MHD-G @ 85°C

Ceramic advantage

Plastic packages tend to degrade faster after 6k hours of LM-80

LM-80: DURIS S 10 (P7LP32.EM) vs XLamp MHD-G @ 105°C

Ceramic advantage

OSRAM DURIS S 10 (P7LP32.EM) vs XLamp MHD-G: LM-80 Position

XLamp MH Family LM-80 Testing Summary

Brighter XLamp MK-R LED

XLamp MK-R White Standard Order Codes

Minimum luminous flux @ 700mA, 85°C

LM-80 Updates

XLamp CXA2 Family LM-80 Summary

All LED currents shown at 36V, except

XLamp CXA2 Family TM-21 Lifetime (CXB3050)

Notes:
Results for tested model (CXB3050) applied

XLamp CXA2 Family TM-21 Lifetime (CXB3050)

Notes:
Results for tested model (CXB3050) applied

XLamp CXA2 Family TM-21 Lifetime (CXB2530)

Notes:
Results for tested model (CXB2530) applied

XLamp CXA2 Family TM-21 Lifetime (CXB2530)

Notes:
Results for tested model (CXB2530) applied

XLamp CXA2 Family TM-21 Lifetime (CXB3590 72V)

Notes:
Results for tested model (CXB3590

XLamp CXA2 Family TM-21 Lifetime (CXB3590 72V)

Notes:
Results for tested model (CXB3590

XLamp XHP70 LM-80 Testing Summary

XLamp XP-L LM-80 Testing Summary

XLamp MH Family LM-80 Testing Summary

XLamp XHP35 LM-80 Testing Summary

XLamp XHP50 LM-80 Testing Summary