Raghu P Menon

US Patent:

55650899, Oct 15, 1996

Filed:

Sep 30, 1994

Appl. No.:

8/315631

Inventors:

Ramakrishnan Ramachandran - Allendale NJ
Raghu K. Menon - Medford NJ

Assignee:

The BOC Group, Inc. - New Providence NJ

International Classification:

C10G 1118

US Classification:

208113

Abstract:

Coke deposits are removed from particulates by combustion in a regenerator by a process in which air is initially used as the oxidant. The combustion gas is subjected to a separation process to remove nitrogen therefrom, and the remaining carbon dioxide-enriched gas stream is recycled to the regenerator together while substantially pure oxygen is introduced into the regenerator. As the level of carbon dioxide in the system increases, the amount of air being introduced into the regenerator is gradually reduced and, in compensation, the amount of oxygen flowing to the regenerator is gradually increased. Eventually, part or all of the air is replaced by oxygen and carbon dioxide recycle gas, and the level of oxygen and carbon dioxide are regulated to maintain the desired temperature in the regenerator.

US Patent:

20210341714, Nov 4, 2021

Filed:

Jul 9, 2021

Appl. No.:

17/371983

Inventors:

- Windsor CT, US
Raghu Menon - Marlborough MA, US
Yangiu (Julia) Zhu - Chepachet RI, US
Mike Zwolinski - Westford MA, US

Assignee:

RemoteReality Corporation - Windsor CT

International Classification:

G02B 13/06
H04N 5/232
G02B 13/18
G02B 9/12
G02B 17/08
G02B 5/09
G02B 5/20
G03B 37/06
G08B 13/196

Abstract:

An optical system for a camera includes a convex reflector, a decompression lens, and an image sensor. The convex reflector has a first diameter and a non-parabolic, axially symmetric, aspheric surface that provides a virtual curved and compressed image of a scene having a non-parabolic image compression. The decompression lens is positioned to receive the virtual curved and compressed image. The decompression lens is configured to decompress the virtual curved and compressed image into a real image having a parabolic image decompression and project the real image. The image sensor is positioned to receive the real image. The real image has a second diameter at the image sensor that is less than the first diameter. A ratio of the first diameter to the second diameter is between 6.5:1 and 2.3:1. The optical system provides a polychromatic modulation transfer function of 30% or more for 150 cy/mm.

US Patent:

20190011678, Jan 10, 2019

Filed:

Aug 29, 2018

Appl. No.:

16/116597

Inventors:

- Windsor CT, US
Raghu MENON - Marlborough MA, US
Yangiu (Julia) ZHU - Chepachet RI, US
Mike ZWOLINSKI - Westford MA, US

Assignee:

RemoteReality Corporation - Windsor CT

International Classification:

G02B 13/06
G02B 5/20
G02B 5/09
G02B 17/08
G02B 13/18
H04N 5/232
G02B 9/12

Abstract:

An optical system, apparatus, and method for sensing 360-degree horizontal and wide vertical field of view are shown. Powerful optics creates high resolution decompressed images on an image sensor. The compact panoramic camera includes two major optical components: (i) an axially symmetric convex aspheric reflector incorporated into a catadioptric optical element capable of providing a virtual curved image of a 360-degree panoramic scene with a specific image compression and (ii) a decompression lens with hardware aperture. The decompression lens is comprised of three single lens elements and accepts the virtual curved and compressed image and projects it onto the image sensor with high optical resolution and desirable image decompression to achieve a high digital resolution at the same time. Another version of decompression lens is comprised only of a single lens element and projects high resolution decompressed images onto an image sensor.

US Patent:

20160077315, Mar 17, 2016

Filed:

Sep 15, 2015

Appl. No.:

14/854687

Inventors:

- Windsor CT, US
Raghu MENON - Marlborough MA, US
Yangiu (Julia) ZHU - Chepachet RI, US
Mike ZWOLINSKI - Westford MA, US

Assignee:

RemoteReality Corporation - Windsor CT

International Classification:

G02B 13/06
G02B 13/18
G02B 5/20
G02B 17/08
G02B 5/09
H04N 5/232
G02B 9/12

Abstract:

An optical system, apparatus, and method for sensing 360-degree horizontal and wide vertical field of view are shown. Powerful optics creates high resolution decompressed images on an image sensor. The compact panoramic camera includes two major optical components: (i) an axially symmetric convex aspheric reflector incorporated into a catadioptric optical element capable of providing a virtual curved image of a 360-degree panoramic scene with a specific image compression and (ii) a decompression lens with hardware aperture. The decompression lens is comprised of three single lens elements and accepts the virtual curved and compressed image and projects it onto the image sensor with high optical resolution and desirable image decompression to achieve a high digital resolution at the same time. Another version of decompression lens is comprised only of a single lens element and projects high resolution decompressed images onto an image sensor.