Isolux Curve and Polar Photometry of LED Public Street Lighting for Green Lighting

DOI

10.2991/978-94-6239-805-4_6How to use a DOI?

Keywords

Illuminance; Lighting; Street

Abstract

Public Street Lighting has an important role in improving the safety, security, and comfort of road users, as well as for temple surroundings. This study aims to analyze the illuminance distribution of LED street lighting installed on a 6-meter pole height, with a 0.5-meter ornament arm and an armature tilt angle of 10°. Mathematical, statistical and photometric analysis were used in this study. Light intensity data samples were taken from 10 lamp points, there are four observation points for each lamp, namely points A, B, C, and D. The results show that the average illuminance at point A is 82.8 lux, point B is 44.8 lux, point C is 40 lux, and point D is 13.1 lux. The maximum illuminance occurred at Point A (closest to the light source center), while the minimum occurred at Point D. Based on the calculation results and visualization of the Isolux curve, the distribution of light shows an asymmetric pattern with a tendency for light to spread forward (forward throw). The peak light intensity occurs at an angle of 55° to 60° relative to nadir. These photometric characteristics make the luminaire suitable for roadway applications (Type II/III), exceeding the requirements of European Standard EN 12464-2: Lighting of work places – Part 2: Outdoor work places, as the road primarily serves to illuminate the temple environment. The results of the study found that the design is efficient and represents green lighting, as the minimum illuminance requirement of 20 lux at target point C is achieved.

Copyright

© 2026 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - I Wayan Jondra
AU  - Putu Agus Mahadi Putra
AU  - Kadek Amerta Yasa
AU  - I Made Purbhawa
AU  - Ni Made Amustini
AU  - I Made Sudana
PY  - 2026
DA  - 2026/10/08
TI  - Isolux Curve and Polar Photometry of LED Public Street Lighting for Green Lighting
BT  - Proceedings of the International Conference on Sustainable Green Tourism Applied Science - Engineering Applied Science 2026 (ICOSTAS-EAS 2026)
PB  - Atlantis Press
SP  - 44
EP  - 52
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6239-805-4_6
DO  - 10.2991/978-94-6239-805-4_6
ID  - Jondra2026
ER  -