An optimisation of a freeform lens design for LED street lighting

Sina Babadi, Roberto Ramirez-Iniguez, Tuleen Boutaleb, Tapas Mallick

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    77 Downloads (Pure)

    Abstract

    The number of light emitting diodes (LEDs) used in a variety of applications is increasing rapidly. A good example of an application where this is happening is street lighting. The increasing use of LEDs is due to their advantages compared to other sources of illumination. However, LEDs are not without disadvantages. One of their main drawbacks when used for street lighting without an adequate secondary optic is that they tend to produce a circular footprint with high intensity at the centre and low intensity at the edge of the illuminated area, which prevents them from satisfying national and international standards for uniformity of illumination. This paper presents a new energy mapping method to design a freeform lens to generate uniform illumination of over 95% on the target plane. The lenses presented in this paper have been designed with two different entrance apertures: (i) A hemisphere subtracted aperture (ii) a flat entrance aperture.
    Original languageEnglish
    Title of host publicationIEEE International Conference for Students on Applied Engineering (ISCAE)
    PublisherIEEE
    Pages89-92
    Number of pages4
    ISBN (Electronic)9781467390538
    DOIs
    Publication statusPublished - 9 Jan 2017

    Fingerprint

    Street lighting
    Light emitting diodes
    Lenses
    Lighting
    Light sources
    Optics

    Keywords

    • LED
    • street lighting
    • freeform lens
    • illumination

    Cite this

    Babadi, S., Ramirez-Iniguez, R., Boutaleb, T., & Mallick, T. (2017). An optimisation of a freeform lens design for LED street lighting. In IEEE International Conference for Students on Applied Engineering (ISCAE) (pp. 89-92). IEEE. https://doi.org/10.1109/ICSAE.2016.7810167
    Babadi, Sina ; Ramirez-Iniguez, Roberto ; Boutaleb, Tuleen ; Mallick, Tapas . / An optimisation of a freeform lens design for LED street lighting. IEEE International Conference for Students on Applied Engineering (ISCAE). IEEE, 2017. pp. 89-92
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    abstract = "The number of light emitting diodes (LEDs) used in a variety of applications is increasing rapidly. A good example of an application where this is happening is street lighting. The increasing use of LEDs is due to their advantages compared to other sources of illumination. However, LEDs are not without disadvantages. One of their main drawbacks when used for street lighting without an adequate secondary optic is that they tend to produce a circular footprint with high intensity at the centre and low intensity at the edge of the illuminated area, which prevents them from satisfying national and international standards for uniformity of illumination. This paper presents a new energy mapping method to design a freeform lens to generate uniform illumination of over 95{\%} on the target plane. The lenses presented in this paper have been designed with two different entrance apertures: (i) A hemisphere subtracted aperture (ii) a flat entrance aperture.",
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    author = "Sina Babadi and Roberto Ramirez-Iniguez and Tuleen Boutaleb and Tapas Mallick",
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    Babadi, S, Ramirez-Iniguez, R, Boutaleb, T & Mallick, T 2017, An optimisation of a freeform lens design for LED street lighting. in IEEE International Conference for Students on Applied Engineering (ISCAE). IEEE, pp. 89-92. https://doi.org/10.1109/ICSAE.2016.7810167

    An optimisation of a freeform lens design for LED street lighting. / Babadi, Sina; Ramirez-Iniguez, Roberto; Boutaleb, Tuleen; Mallick, Tapas .

    IEEE International Conference for Students on Applied Engineering (ISCAE). IEEE, 2017. p. 89-92.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

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    N1 - Lead author (student) confirmed version is AAM; no embargo; validated for discovery. Acceptance email provided Funding note: The authors would like to thank the Energy Technology Partnership (ETP), Optical Antenna Solution (OAS) and Glasgow Caledonian University for their funding to conduct this research .

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    Babadi S, Ramirez-Iniguez R, Boutaleb T, Mallick T. An optimisation of a freeform lens design for LED street lighting. In IEEE International Conference for Students on Applied Engineering (ISCAE). IEEE. 2017. p. 89-92 https://doi.org/10.1109/ICSAE.2016.7810167