Located in Dehradun , its primary function is research and development in the field of optical and electro - optical instrumentation .
Instruments Research & Development Establishment ( IRDE ) is a laboratory of the Defence Research & Development Organization ( DRDO ) .
Located in Dehradun , IRDE 's primary function is research and development in the field of optical and electro - optical instrumentation .
Instruments Research & Development Establishment ( IRDE ) is a laboratory of the Defence Research & Development Organization ( DRDO ) .