CONSTANTINE T MARKOS
Electrician in Lynn, MA
License number
Massachusetts 13937
Issued Date
Jan 8, 1992
Expiration Date
Jul 31, 2001
Type
Master Electrician
Address
Address
Lynn, MA 01904
Personal information
See more information about CONSTANTINE T MARKOS at radaris.comName
Address
Phone
PO Box 68, Lynn, MA 01903
62 Superior St, Lynn, MA 01902
99 Verona St, Lynn, MA 01904
Professional information
Non-Contact Optical Polarization Angle Encoder
US Patent:
2005000, Jan 6, 2005
Filed:
May 5, 2004
Appl. No.:
10/839073
Inventors:
Geert Wijntjes - Chelsea MA, US
Constantine Markos - Lynn MA, US
Constantine Markos - Lynn MA, US
International Classification:
G01D005/34, G01J004/00
US Classification:
356364000, 250231160, 250225000
Abstract:
An optically coupled rotary encoder that is capable of measuring and encoding the angle of rotation of a rotating or stationary object. A polarizer rotates synchronously with the rotatable object and inputs broadband or single frequency unpolarized light. The polarizer outputs and directs polarized light towards a plurality of fixed analyzers and light detectors. Each fixed analyzer outputs and directs further polarized light towards one of the light detectors. Each light detector outputs an electrical signal to a phase processor based upon one attribute of the further polarized light. The phase processor outputs a phase angle with high resolution (>12 bit) with high accuracy and frequency (5 MHz). The system and method can operate in harsh environments having high temperatures, dirt and debris and is not susceptible to EMI/RFI.
Non-Contact Optical Polarization Angle Encoder
US Patent:
2003009, May 22, 2003
Filed:
Nov 6, 2002
Appl. No.:
10/288875
Inventors:
Geert Wijntjes - Chelsea MA, US
Constantine Markos - Lynn MA, US
Constantine Markos - Lynn MA, US
International Classification:
G01J004/00
US Classification:
356/364000
Abstract:
An optically coupled rotary encoder that is capable of measuring and encoding the angle of rotation of a rotating or stationary object. A polarizer rotates synchronously with the rotatable object and inputs broadband or single frequency unpolarized light. The polarizer outputs and directs polarized light towards a plurality of fixed analyzers and light detectors. Each fixed analyzer outputs and directs further polarized light towards one of the light detectors. Each light detector outputs an electrical signal to a phase processor based upon one attribute of the further polarized light. The phase processor outputs a phase angle with high resolution ( 10 bit) with high accuracy and frequency (5 Mhz). The system and method can operate in harsh environments having high temperatures, dirt and debris and is not susceptible to EMI/RFI.