Location History:
- Arlington, MA (US) (2007 - 2010)
- Boston, MA (US) (2012 - 2016)
Company Filing History:
2 out of 152 
1 out of 17 
3 out of 832,891 Years Active: 2007-2016
Title: George H Seward: Innovator in Optical Systems
Introduction
George H Seward is a notable inventor based in Arlington, MA (US). He has made significant contributions to the field of optical systems, holding a total of 6 patents. His work focuses on enhancing digital pathology and LED technology through innovative lens designs.
Latest Patents
One of Seward's latest patents is for a tube lens with a long front tube length within an optical system for digital pathology. This tube lens includes a singlet and a doublet, with a front tube length that is 1.0 to 1.5 times the effective focal length. This design provides ample space for an optical platform, a folding mirror, and a telescope, which can switch between a 2× mode and a 1× mode. The field angle of the tube lens is 4.0 degrees, and specific glass types are used to correct lateral color in the system, which incorporates a white LED and a color CCD sensor.
Another significant patent is for an achromatic homogenizer and collimator for LEDs. This lens arrangement combines the hemispherical emittance profiles from multiple LEDs into a collimated beam without chromatic aberration. The design includes a homogenizer, a solid lightpipe, an internal parabolic reflector, a retroreflector, and a refractor. The internal reflector has a numerical aperture of 1.0, allowing for efficient collection of light, while the retroreflector directs rays away from the LEDs, creating space for high radiance LED electronics.
Career Highlights
Throughout his career, George H Seward has worked with various companies, including Cytyc Corporation. His innovative designs have significantly impacted the optical systems used in digital pathology and LED applications.
Collaborations
Seward has collaborated with notable individuals in his field, including Jonathan W Larson and Gregory R Yantz. These collaborations have contributed to the advancement of his inventions and the development of new technologies.
Conclusion
George H Seward's contributions to optical systems and LED technology demonstrate his innovative spirit and dedication to advancing the field. His patents reflect a commitment to improving digital pathology and enhancing the efficiency of light sources.