Led Based Solar Lantern By Sigma Steel & Engineers Pvt. Ltd.

A LED based solar lantern aims at providing solar electricity for operating LED lights and/or other small DC loads for specified hours of operation per day. Light Emitting Diode (LED) is a device which emits light when an electric current passes through it.

LIGHT SOURCE:
# The light source will be of white LED type. Single lamp or multiple lamps can be used. View angles of a minimum of 120A A and above will be preferred. The luminous performance of LEDs used should not be less than 55 lumen/watt. The colour temperature of white LEDs used in the system should be in the range of 5500A A K to 6500A A K. Use of LEDs which emit Ultraviolet light is not permitted.

# The light output from the white LED light source should be constant through out the duty cycle.
# The lamps should be housed in an assembly suitable for indoor use.


BATTERY:
6Vx 4.5 Ah sealed battery.
# 6V x 3 Wp.
# Total capacity of LED:3mm white LEDs X 36 Nos. totalling 1.8 watt.