Instruments Research and Development Establishment
Instruments Research & Development Establishment (IRDE) is a laboratory of the Defence Research & Development Organization (DRDO). Located in Dehradun, its primary function is research and development in the field of optical and electro-optical instrumentation. Their objective is to develop products like night vision devices, electro-optical surveillance and fire control systems.

Products
Holographic Sight- IRDE has developed holographic sights which are manufactured by the Ordnance Factory Dehradun and have a range of up to 300m. The army has already put in a demand for 20,000 holographic device units while the National Security Guards has shown interest in the device and requested some units.