Dr. John P. Schaefer
Engineering Director at Raytheon EO Innovations
SPIE Involvement:
Author | Instructor
Publications (5)

Proceedings Article | 30 September 2022 Presentation + Paper
Proceedings Volume 12236, 1223606 (2022) https://doi.org/10.1117/12.2633585
KEYWORDS: Imaging systems, Telescopes, Calibration, Staring arrays, Prototyping, Short wave infrared radiation, Reflector telescopes, Reflectivity, Optics manufacturing, Mirrors

Proceedings Article | 31 May 2013 Paper
Proceedings Volume 8713, 871306 (2013) https://doi.org/10.1117/12.2015496
KEYWORDS: Mirrors, Aluminum, Single point diamond turning, Surface finishing, Magnetorheological finishing, Polishing, Intelligence systems, Diamond, Aspheric lenses, Reflectivity

Proceedings Article | 24 September 2011 Paper
Proceedings Volume 8125, 81250T (2011) https://doi.org/10.1117/12.892039
KEYWORDS: Mirrors, Aluminum, Glasses, Surface finishing, Surface roughness, Distortion, Nickel, Diamond, Aerospace engineering, Polishing

Proceedings Article | 6 November 2003 Paper
Proceedings Volume 5174, (2003) https://doi.org/10.1117/12.511341
KEYWORDS: Monte Carlo methods, Modulation transfer functions, Aspheric lenses, Tolerancing, Spindles, Single point diamond turning, Data modeling, Code v, Error analysis, Stars

Proceedings Article | 7 September 2001 Paper
John Schaefer, Richard Eichholtz, Frank Sulzbach
Proceedings Volume 4375, (2001) https://doi.org/10.1117/12.439168
KEYWORDS: Domes, Optics manufacturing, Zinc, Missiles, Diamond, Aspheric lenses, Reflectivity, Magnetorheological finishing, Thin film coatings, Surface finishing

Conference Committee Involvement (2)
Optical Manufacturing and Testing VI
31 July 2005 | San Diego, California, United States
Optical Manufacturing and Testing V
3 August 2003 | San Diego, California, United States
Course Instructor
SC848: Fundamentals of Single Point Diamond Turning
This course provides attendees with a basic working knowledge of single point diamond turning of optical components. The course covers a wide range of topics and should provide the attendee with an understanding of the process capabilities of this technology. Key subject matter includes; equipment, processes, cutting mechanics, material selection, fixturing, metrology, applications, component design, optical tolerancing, and producibility.
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