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WHITE LED (W-LED) BASED ‘SOLAR STUDY LAMP’

A ‘Solar Study Lamp’ is a lighting device consisting of a PV module, battery, lamp, and electronics. Battery, lamp, and electronics are placed in a suitable housing. The Solar Study Lamp is especially suitable for study purposes. Lamp look is similar to table lamp, lamp base connected to LED with gooseneck type of arrangement PV module converts sun light into electricity, charges the battery which powers the luminaire. Luminaire consists of White Light Emitting Diode (W-LED), a solid state device which emits light when an electric current passes through it.

There are two Models of Solar Study Lamps:
Model I:
The Solar lamp is designed to provide 4-5 hours of study light every day throughout the year.
Model II:
The Solar lamp is designed to provide 4-5 hours of study light every day throughout the year.
There is an additional provision for Mobile Phone Charging in emergency to charge Mobile phone battery up to 1000mAH capacity.
The configuration of each model with Specifications is described below:
Model I:
Broad Technical Specifications:
PV Module 2.5 Wp under STC
Battery Lithium-Ferro Phosphate of 3.2V, 2000 mAh
Light Source 1 Watt W-LED luminaire, dispersed beam, soothing to eyes of proper optics and diffuser.
Light Output area of 1.5 feet Study lamp should deliver minimum of 150 Lux at over an Diameter from a height of 1.0 foot. [Minimum 150 Lux when measured at the periphery of 45 centimetres diameter from a height of 30 centimetres.]
Run Time sq.m. on a 5 hours a day under average daily insolation of 5.5 kWh/ horizontal surface.

Model II:

There is a provision for Mobile Phone Charging in emergency to charge Mobile phone battery up to 1000mAH capacity. The Mobile phone battery should be charged preferably during day time to save on the system battery. If the system’s battery is discharged to 60 % state of Charge, the Mobile phone charging would be cut off (to save it for Lighting purpose).

Broad Technical Specifications:

PV Module 5 Wp under STC
Battery Lithium-Ferro Phosphate of 3.2V, 2000 mAh
Light Source 1 Watt W-LED luminaire, dispersed beam, soothing to eyes of proper optics and diffuser
Light Output area of 1.5 feet Study lamp should deliver minimum of 150 Lux at over an Diameter from a height of 1.0 foot. [Minimum 150 Lux when measured at the periphery of 45 centimetres diameter from a height of 30 centimetres.]
Run Time sq.m. on a 5 hours a day under average daily insolation of 5.5 kWh/ horizontal surface.
USB Port Provision for Mobile Phone Charging
To charge up to 1000mAH capacity of Mobile phone battery, preferably during day time. At least 60 % state of charge of the battery to be reserved for lighting, (i.e. As soon as the system battery is discharged to 60 % state of Charge, Mobile phone charging to cut off).