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    Using the Spectroradiometerto Evaluate LED Lamps

    A.J. Both1,

    Mark Blonquist2, Ray Johnson2,

    Alec Hay3

    , Bruce Bugbee3

    1 Rutgers University2 Apogee Instruments, Inc.

    3 Utah State University

    NCERA-101, April 14-17, 2007

    Tuskegee University

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    LED Lamps

    Super Blue

    Super Red

    InfraredCool White

    Warm White

    LEDTRONICS, INC. 38 LEDs

    Plant Bar

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    Unit Price of LED Lamps

    $160LED-PLANTBAR-001Plant Bar

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    Single Wavelength LED Lamps

    RQE: Relative Quantum Efficiency (McCree, 1972; Sager et al., 1988)

    0.0

    0.2

    0.4

    0.6

    0.8

    1.0

    350 400 450 500 550 600 650 700 750 800 850

    Wavelength (nm)

    Normalized

    PhotonFlux

    Sunlight

    Blue LED

    Red LED

    Infrared LED

    Plant Bar LED

    RQE

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    Comparing Cool White Lamps

    RQE: Relative Quantum Efficiency (McCree, 1972; Sager et al., 1988)

    0.0

    0.2

    0.4

    0.6

    0.8

    1.0

    350 400 450 500 550 600 650 700 750 800 850

    Wavelength (nm)

    Normalized

    PhotonFlux

    Sunlight

    FCW

    CW LED

    RQE

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    Comparing Warm White Lamps

    RQE: Relative Quantum Efficiency (McCree, 1972; Sager et al., 1988)

    0.0

    0.2

    0.4

    0.6

    0.8

    1.0

    350 400 450 500 550 600 650 700 750 800 850

    Wavelength (nm)

    Normalized

    PhotonFlux

    Sunlight

    FWW

    WW LED

    RQE

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    Other Commonly Used Lamps

    RQE: Relative Quantum Efficiency (McCree, 1972; Sager et al., 1988)

    0.0

    0.2

    0.4

    0.6

    0.8

    1.0

    350 400 450 500 550 600 650 700 750 800 850

    Wavelength (nm)

    Normalized

    PhotonFlux

    Sunlight

    HPS

    MH

    INC

    RQE

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    Spectral EfficiencySpectral Efficiency = [(PF)i * (RQE)i]343-800/ (PF)343-800

    0.92Plant Bar0.64SUN

    0.82Warm White0.86/0.87FCW/

    0.80Cool White0.49INC

    0.98Super Red0.78MH

    0.72Super Blue0.89HPS

    Spectral

    Efficiency

    LED

    Lamps

    Spectral

    Efficiency*

    Common

    Lamps

    * Bugbee, 1994: PPF Correction Factor = [(PF)i * (RQE)i]360-760/ (PAR)400-700

    FWWCFL(SW)

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    LED Lamp Observations

    Build your own spectrum

    Low power consumption (10 Watt/Lamp)

    Long lamp life (50,000-100,000 hrs) High shock/vibration resistance

    Cool bulb surfaces

    Replacement for INC?- Possibly, but may need a source of far-red

    Replacement for FL?

    - Possibly, but light distribution may be an issue

    Plant Bar: similar applications as light engine(lightcicle) used by colleagues at Purdue?


LEDlamps Professional Brochure Q2 2016

LEDlamps Professional Brochure Q2 2016

PS-C501 取扱説明書 PS-C502 PS-C503

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Connected Lighting for Small and medium enterprises€“-Lighting-–-Philips...FluxPanel FluxGrid, EvoGrid FluxStream EasyLyte, LyteProfile, Calculite Floatplane MasterConnect LEDlamps

Connected Lighting for Small and medium enterprises€“-Lighting-–-Philips...FluxPanel FluxGrid, EvoGrid FluxStream EasyLyte, LyteProfile, Calculite Floatplane MasterConnect LEDlamps

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1200 Calories-mlbm-ps-mlbm-ps

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DOLMAR Parts Manual for Chainsaw Models: PS-33/330 PS-340 PS-341 PS-342 PS-344 PS-400 PS-401

DOLMAR Parts Manual for Chainsaw Models: PS-33/330 PS-340 PS-341 PS-342 PS-344 PS-400 PS-401

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The Paper to the Presentation :: Indonesian Tax Planning PPh Ps 22, Ps 23, Ps 24, Ps 25

DOLMAR Parts Manual for Chainsaw Models: PS-33 PS-340 PS-400 PS-330 PS-341 PS-401 PS-39 PS-342 PS-410 PS-344 PS-411

DOLMAR Parts Manual for Chainsaw Models: PS-33 PS-340 PS-400 PS-330 PS-341 PS-401 PS-39 PS-342 PS-410 PS-344 PS-411

The MASTER LEDlamps have landed · Standard NR63 £4.20 £3.00 £0.27 MASTER LEDlamps Annual Maintenance Costs Annual Lamp Purchase Annual Electricity Annual Savings £37.53 ANNUAL

The MASTER LEDlamps have landed · Standard NR63 £4.20 £3.00 £0.27 MASTER LEDlamps Annual Maintenance Costs Annual Lamp Purchase Annual Electricity Annual Savings £37.53 ANNUAL

Automatically generated PDF from existing images.Puduna aram PS Pudunagaram PS Pudunagaram PS Pudunagaram PS Pudunagaram PS Pudunagaram PS Puduna aram PS Pudunagararn PS Pudunagaram

Automatically generated PDF from existing images.Puduna aram PS Pudunagaram PS Pudunagaram PS Pudunagaram PS Pudunagaram PS Pudunagaram PS Puduna aram PS Pudunagararn PS Pudunagaram

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PS #10 PS #11

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