Binay Opto Electronics Private Ltd. Manufactures Multichip LED Lamps. Binay Opto Electronics Private Ltd also offers LED based pilot lights, aviation obstruction lights, alarm lights, etc. Multichip LED offers the advantage of one-to-one retrofit replacements to existing filament indicator bulbs. The light emission is characterised by a high degree of angular dispersion, making them ideal for use in applications requiring the backlighting of inscribed legends [such as annunciator window fascias and illuminated pushbutton switches]