This inventor holds 2 USPTO granted patents. Top assignees: Defence Research & Development Organization, Defence Research Development Organisation. Active years: 2015-2018.
Company Filing History:
1 out of 2 
1 out of 7 
Years Active: 2015-2018
Title: Devinder Pal Ghai: Innovator in Velocity Interferometry and Optical Vortex Generation
Introduction
Devinder Pal Ghai is a distinguished inventor based in New Delhi, India. He has made significant contributions to the fields of velocity interferometry and optical vortex generation. With a total of 2 patents, Ghai's work showcases his innovative spirit and technical expertise.
Latest Patents
Ghai's latest patents include a "Velocity Interferometer for Any Reflector with Variable Sensitivity Range and Time Resolution." This invention relates to a velocity interferometer that comprises two optical cells, one of which partially contains a liquid. The design allows for the light entering the interferometer to be amplitude split and propagated through the two cells, ensuring that the apparent path lengths of the beams are equal. This configuration is essential for obtaining a single wide fringe in the interference pattern. The device captures Doppler shifted light from a moving projectile, generating fringe shifts that produce voltage signals proportional to the projectile's instantaneous velocity. These signals are recorded and processed to obtain a velocity time history of the projectile.
Another notable patent is the "Device for Generating Optical Vortex." This device features a circular mirror with a central hole and a radial slit, along with a piezoelectric actuator. The actuator's design allows for azimuthal expansion upon applying excitation voltage, which generates an optical vortex of the desired topological charge.
Career Highlights
Throughout his career, Ghai has worked with prominent organizations such as the Defence Research Development Organization and the Defence Research Development Organisation. His work in these institutions has contributed to advancements in defense technology and optical systems.
Collaborations
Ghai has collaborated with notable colleagues, including Anil Kumar Maini and Het Ram Swami. These partnerships have further enriched his research and development efforts.
Conclusion
Devinder Pal Ghai's innovative contributions to velocity interferometry and optical vortex generation highlight his expertise and commitment to advancing technology. His patents reflect a deep understanding of complex optical systems and their applications.