BINAY’s LED-based Street Light Luminaires offer low power consumption and maintenance-free long life – a true ‘GREEN’ lighting product
  • Low power consumption (making them ideal for use in solar-powered applications)
  • Long life, which ensures zero maintenance costs: The life of LEDs is more than 50,000 hours (to 70% lumen maintenance), as compared to much lower life for conventional light sources. The LED does not have catastrophic failure, but gradually degrades to extinction – light output is available even after 20 years of operation (50% light after 20 years).
  • Effective visibility of light output comparable to different types of conventional lamp luminaires
  • High optical conversion efficiency (up to 95%), as compared to around 50% for CFL-based luminaires
  • Light output can be directed in specific directions by the use of Total Internal Reflection (TIR) lenses; no losses of reflection/refraction or lamp (source) obstruction in the luminaire: Such losses occur with conventional lights like fluorescent, CFL, HPSV, HPMV and metal halide, which emit light in 360, and thus require a reflecting/refracting luminaire to redirect the light emitted from the top surface of the lamp. Furthermore, as these light sources are of a large size and volume, light spillage occurs on to points where light is not required.
    The LED light output is 180 in nature, and can therefore be directed as desired with Total Internal Reflection lenses (which enable each LED module to have a different beam angle). This results in very low luminaire loss and high efficiency.
  • No Light Pollution: Conventional light source luminaires such as metal halide and HPSMV luminaires are not able to focus all their light onto the target area, but scatter the output onto unwanted areas such as windows of nearby buildings (causing disturbance to occupants at night), and even into the sky. This is known as light pollution. This unwanted light is not only wasted light, but creates disturbance and glare to residents, as also to viewers of the night-time sky.
  • NO infra-red or ultra-violet radiation: Conventional light sources are plagued by infra-red and ultra-violet radiation, which has detrimental effects.
  • Environment-friendly operation (as they contain no mercury or heavy metals): Mercury (used in fluorescent lamps) is a haz-ardous substance.
  • Loss of a single LED module does not affect the reliability of the light: In case of conventional single-source lamp type lights, failure of the light source results in no light.
  • Greater Visual Efficiency than HPSV lamps: The human eye is more sensitive to blue emission in low ambient light conditions, such as at night time (mesopic region). Given this night vision property of the eye, even though a high pressure sodium vapour (HPSV, which consists of predominantly yellow light) has an efficiency of 100-120 Lm/w, its effective visual utilization is only about 20 Lm/w; that is, the photopic lux value of the HPSV lamp falls to 1/7th of its measured value in comparison to a light source having predominantly blue light output (such as LEDs). As such, a unit lux level of LED light is visibly equivalent to 7 lux of HPSV at night time (in mesopic light ambience conditions).
  • Better Peripheral vision: The ‘Rods’ in the human eye, which contribute to peripheral vision, are not activated by HPSV light. Activities occurring at the periphery of vision may not register properly (e.g., a motorist may not perceive a pedestrian at the side of the road), resulting in an accident.
  • Better Focus and Perception of Detail: The pupil of the eye is activated by blue wavelengths, and in its absence (as in HPSV light) the pupil is wide open. This affects the depth of focus of the eye, making it difficult to focus on detail.
  • Colour Rendering Index (CRI) of HPSV is only 22 (CRI of sunlight at noon is 100). Colours are not seen properly,creating an unpleasant visual ambience.
  • LEDs give more light at lower temperatures: Conventional discharge lamp operation is dependent on ambient temperature. At low temperatures, low pressure discharge lamps (like fluorescent tubes and CFLs) give lower light output. Their striking voltage also rises, making them difficult to start – which then leads to rapid failure of the tube.
  • Instant switch-on: High pressure discharge lamps have a delay when first switching on. Moreover, when restarting, a restarting time is necessary for cooling of gas. LEDs have no such problem, and light up immediately.
  • Vibration resistant: Being solid-state, LED lamps can withstand shocks and vibration, unlike fragile glass filament and discharge lamps
  • While the initial capital cost is higher, the total lifetime cost of ownership is extremely low. The payback period can be as low as 3 to 4 years (after which the product essentially becomes ‘free’ for the next 10 to 15 years).
  • All BINAY LED Street Lights are covered under a 5-year warranty.


BINAY’s new ‘Eagle-Eye’ LED Street Light has an arrangement for adjusting the beam pattern, which allows it to cover locations with different pole-to-pole distances while providing even illumination coverage


THE VISUAL PERCEPTION PROBLEM: A street illuminated with HPSV lighting

Same street illuminated with white scotopically enhanced LED light: Improved Colour Rendering and perception of detail