GUIDE FOR HORTICULTURAL OPTICS HORTICULTURAL LIGHTING IN A NUTSHELL WHY LEDiL?

Plants have a completely different sensitivity to light colours. Contrary to other WIDE RANGE OF MODULAR DESIGNS AVAILABLE SUPPORTING COMPO- NENTS AVAILABLE FROM lighting applications which are made for humans and valued in luxes, plants FOR ALL TYPES OF HORTICULTURAL LIGHTING OUR PARTNERS consume light and need photons for . The amount and ratio of • Efficient single lenses and arrays, IP-solu- different wavelengths from the light determine how, and how fast, plants grow Made in collaboration to and produce crop. Regardless of different seasons or unstable weather today’s tions, uniform colour mixing and various light distributions provide thermally, optically artificially created horticultural lighting can mimic any daylight integral and have and efficiently optimised stable, optimized growing conditions for each plant. • Optimized results with off-the-shelf solutions to make the latest LEDs your luminaire designs easi- SOME TERMS TO KNOW: • Reduced luminaire BOM er. Just add personality. The photosynthetic photon flux (PPF), which comes from the total amount of pho- costs tosynthetically active radiation (PAR), is what has the most • Use same luminaire effect on how strong plant growth will be. More PPF means design over and over more photons and more power, and this value can be again easily measured and used as a parallel to lumens. On the other hand photosynthetic flux density (PPFD) means how many of the photons actually hit their target, and this can be LIGHT THAT IS RIGHT related to luxes.

KEY DESIGN QUESTIONS LED vs HID LESS ENERGY/ COMPONENT AFFECTING KEY QUESTIONS LONGER LIFETIME ELECTIRITY USED PPF & LED 90% 25.000 h 85% 50.000 h (No savings LEDs Generating enough photons? if additional SPECTRAL -30% heating is DRIVER Correct ratio of photons? HID 50% 20.000 h POWER needed)

ADVANTAGES SPECTRUM + Higher yield + Healthier crops PPFD Are the photons going where they are consumed? OPTIMIZATION OPTICS (MIN, MAX, Distance required between luminaires? Distance required between luminaire & plants? The right optics can help to: UNIFORMITY) INVESTMENT COST 2.0 - 5.0 times higher Focus light more efficiently

2 PPF/J, W/m , LOWER LIGHT OUTPUT Reduce the number of LEDs/ Luminaires needed ALL W/kg How efficient the installation is? Light should be focused only

(EFFICACY) DISADVANTAGES on plants to maximise PPFD Improve PPFD with less power

SUCCESSFUL GROW IS THE SUM OF IT’S COMPONENTS OPTIMISE YOUR SYSTEM ROI WITH THE RIGHT COMPONENTS Highly efficient linear platform for DAHLIA horticultural lighting

FEATURES

• Comes with a silicone seal for IP65 • Made from PMMA (good chemical resistance) • Sturdy fastening with 14 screws • Adopts easily into design with 1-4 channels and varying number of LEDs 320 x 80 mm per channel • PPFD deviation 10 % over the growth CS16619_DAHLIA-TL110 area

COMPATIBILITY

• Typical horticultural 3535 HP LEDs (e.g. Osram Oslon SQ Horti, High power density Luxeon SunPlus 35 Line LEDs) by 120 closely spaced lenses

SIMULATION RESULTS 36 DAHLIA modules in three lines

• Distance: 2.35 m Designed to achieve over • Spacing: 3.1 m 90% PPFD uniformity across IP65 rated with easy to • Power: 195.3 W / module the 6 meter growing tray while • PPF: 489 µmol/s / module reducing power consumption. clean smooth surface • Efficacy: 2.505 µmol/J

Results at center tray • Min 25 µmol/m², Max 27 µmol/m² • Average PPFD 26 µmol/m² • PPFD uniformity on grow tray 95.3% Extremely uniform lighting on the growth area Results at first and last tray resulting in optimal growing conditions • Min 15 µmol/m², Max 27 µmol/m² • Average PPFD 23 µmol/m² • PPFD uniformity on grow tray 67.2% Best match TOP LIGHTING - PETUNIA 29.5 x 46.5 mm low profile and Illumination of the hall and plants from ceiling level. dense array with 12 lenses for PETUNIA PETUNIA2 horticultural lighting and up to CHALLENGES 3535 size LED packages. • Light concentration on plants • Uniformity and constant quality of light spectrum • High amount of power needed

TYPICAL BEAMS: VIRPI 75 x 75 mm 25-up multi-lenses for spot- and track lighting and S M W up to 3535 size LED packages. W WW WWW TL110

TOP LIGHTING - Illumination from top of the plants at close distance. IP-2X6 CHALLENGES (STRADA & HB) M W WWW VSM • Uniform intensity and spectral distribution Standardized modular product • Plants shading each other family designed for street and • Photosynthetic efficiency (PPF/W) • Heat industrial lighting, but also suitable for a wide range of other applications. TYPICAL BEAMS: T2 T3 T4-B 2X2MX/S VSM S (STRADA & HB) M W WWW VSM 90 x 90 mm up to IP67 2X2 arrays for up to 7070 size LED C CY WWW packages.

T2 T3 (MXS only) T4-B INTRA-CANOPY LIGHTING Illumination on the side or in between the plants. FLORENCE-3R-IP 3-row (Zhaga book 7) up to IP67 CHALLENGES linear lenses for humid, wet and Z60 Z90 O • Uniform PPFD dusty environments. • Good color uniformity (if continuous/wide spectrum) • Spectrum fit to the rest of lighting • Light direction

TYPICAL BEAMS: STELLA VSM S FT TF Ø90 mm up to IP67 silicone lenses for street, wide area and high bay lighting and HB HB-WWW VSM up to 30 mm LES size COBs.

T2 T3 T4-B NHS Best match

T2 T3 T4 HOW TO READ POLAR CURVES 0° to 180°: Longitudinal light distribution

90° to 270°: Horizontal light distribution

The polar curve can be used to estimate optimal beam for installation

TECHNICAL SUPPORT

Simulations to show optic performance in real applications Ledil Oy Joensuunkatu 13 24100 SALO Guides and tips for installations FINLAND Ledil, Inc. 228 West Page Street Suite D Thermal analysis for luminaire designs Sycamore IL 60178 USA Free for all our customers www.ledil.com The information contained herein is the property of LEDiL Oy, Joen- (GLOBAL) suunkatu 13, FI-24100 SALO, [email protected] Finland, and is subject to change [email protected] (NORTH AMERICA) withoutprior notice. Please visit (RUSSIA) www.ledil.com for additional [email protected] information, such as the latest photometric files, 3D mechanical models, and application notes relating to handling, gluing and taping. All LEDiL products are IPR protected.