Dr. Ramagopal Vizia Sarepaka Profile

Dr. Ramagopal Vizia Sarepaka

President, R&D Operations at Optics & Allied Engineering Pvt Ltd

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Publications (11)

Proceedings Article | 16 October 2017 Paper

Surface characterization protocol for precision aspheric optics

RamaGopal Sarepaka, Siva Sakthibalan, Somaiah Doodala, Rakesh Panwar, Rajendra Kotaria

Proceedings Volume 10448, 104481D (2017) https://doi.org/10.1117/12.2279804

KEYWORDS: Aspheric lenses, Metrology, Profilometers, Surface finishing, Diamond, Platinum, Single point diamond turning, Aspheric optics, Error analysis, Diamond turning

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Proceedings Article | 15 June 2015 Paper

Multi-layer dielectric thin-film optical filters for beam folding applications

Mukesh Kumar, Neelam Kumari, P. Krishna Rao, Vinod Karar, S. Ramagopal, Amit Sharma

Proceedings Volume 9654, 96540F (2015) https://doi.org/10.1117/12.2181776

KEYWORDS: Reflectivity, Thin films, Optical filters, Electron beams, Reflection, Dielectrics, Glasses, Thin film coatings, Chemical vapor deposition, Light sources

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Proceedings Article | 15 June 2015 Paper

An experimental investigation on the influence of machining parameters on surface finish in diamond turning of silicon optics

Neha Khatri, Rohit Sharma, Vinod Mishra, Mukesh Kumar, Vinod Karar, RamaGopal Sarepaka

Proceedings Volume 9654, 96540M (2015) https://doi.org/10.1117/12.2181525

KEYWORDS: Silicon, Surface finishing, Single point diamond turning, Radium, Surface roughness, Diamond machining, Diamond turning, Spindles, X-ray optics, Diamond

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SPIE Journal Paper | 21 March 2014

Fabrication of λ/2 phase step mirror for CO2 laser resonator using diamond turning

Vinod Mishra, Abhik Biswas, Neeraj Kumar, Lalit Kukreja, Ramagopal Sarepaka

OE, Vol. 53, Issue 03, 036107, (March 2014) https://doi.org/10.1117/12.10.1117/1.OE.53.3.036107

KEYWORDS: Mirrors, Coating, Gas lasers, Single point diamond turning, Copper, Carbon monoxide, Diamond machining, Laser resonators, Surface finishing, Metrology

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Proceedings Article | 11 August 1995 Paper

Virtual prototyping: a cost-effective emerging methodology

Anees Ahmad, Chen Feng, RamaGopal Sarepaka

Proceedings Volume 2537, (1995) https://doi.org/10.1117/12.216399

KEYWORDS: Computer aided design, Optical design, Prototyping, Tolerancing, Optical components, Mechanical engineering, Interfaces, Systems modeling, Optomechanical design, Finite element methods

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Proceedings Article | 6 June 1995 Paper

Zero-obscuration three-mirror astronomical telescope

Chen Feng, RamaGopal Sarepaka

Proceedings Volume 2475, (1995) https://doi.org/10.1117/12.211262

KEYWORDS: Mirrors, Tolerancing, Space telescopes, Telescopes, Sensors, Cameras, Imaging systems, Aspheric lenses, Astronomical telescopes, Ultraviolet radiation

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Proceedings Article | 22 May 1995 Paper

High field-of-view IR scanner using microlens arrays

Chen Feng, Anees Ahmad, RamaGopal Sarepaka

Proceedings Volume 2470, (1995) https://doi.org/10.1117/12.210053

KEYWORDS: Microlens array, Scanners, Infrared imaging, Thermography, Beam steering, Vignetting, Imaging systems, Thermal effects, Microlens, Micro optics

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Proceedings Article | 19 April 1995 Paper

Interactive simulation-based optical system development

Anees Ahmad, Chen Feng, RamaGopal Sarepaka

Proceedings Volume 10280, 102800H (1995) https://doi.org/10.1117/12.204223

KEYWORDS: Optical simulations, Optical systems engineering, Solid modeling, Computer simulations, Prototyping, Ray tracing, Error analysis, Thermography, Optomechanical design, Thermal analysis

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Proceedings Article | 28 March 1995 Paper

Scanning telescope for the advanced polarized infrared imaging sensor (APIRIS)

Chen Feng, Anees Ahmad, Ye Li, RamaGopal Sarepaka

Proceedings Volume 2473, (1995) https://doi.org/10.1117/12.204873

KEYWORDS: Mirrors, Telescopes, Space telescopes, Optical instrument design, Tolerancing, Scanners, Lenses, Sensors, Infrared imaging, Germanium

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SPIE Journal Paper | 1 February 1995

Tolerance analysis versus image quality: a case study for cost-effective space optics

Anees Ahmad, Chen Feng, RamaGopal Sarepaka

OE, Vol. 34, Issue 02, (February 1995) https://doi.org/10.1117/12.10.1117/12.194038

KEYWORDS: Tolerancing, Mirrors, Ultraviolet radiation, Imaging systems, Image quality, Space telescopes, Phase modulation, Astronomical imaging, Telescopes, Optical fabrication

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Proceedings Article | 30 September 1994 Paper

Tolerance analysis versus image quality: a case study for cost-effective space optics

Anees Ahmad, Chen Feng, RamaGopal Sarepaka

Proceedings Volume 2263, (1994) https://doi.org/10.1117/12.188022

KEYWORDS: Tolerancing, Mirrors, Image quality, Astronomical imaging, Space telescopes, Imaging systems, Ultraviolet radiation, Telescopes, Optical alignment, Optical instrument design

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Showing 5 of 11 publications

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