PAUL J DOBSON
Radio and Television Technicians in Charlton, MA
License number
Massachusetts 8455
Expiration Date
Dec 31, 1987
Type
Master Technician
Address
Address
Charlton, MA 01507
Professional information
Method Of Making Large Core Polymer Fiber Optic Device
US Patent:
6404963, Jun 11, 2002
Filed:
Jan 28, 2000
Appl. No.:
09/494153
Inventors:
Paul J. Dobson - Charlton MA
Assignee:
Rofin Australia Pty. Ltd.
International Classification:
G02B 616
US Classification:
385123, 385 95
Abstract:
A method and a device are disclosed for reducing ultraviolet and infrared degradation of a polymer core of large core polymer fiber. The method comprises coupling a large core polymer fiber with a glass rod resulting in the placement of the glass piece in the path of the ultraviolet and infrared radiation, thus intercepting the same and keeping the polymer core from being degraded due to long term exposure to low densities of ultraviolet or infrared radiation or from being destroyed in applications involving high density exposure to such radiation. The device comprises a large core polymer fiber having a glass rod incorporated therein to prevent exposure of the core of the fiber to ultraviolet and infrared radiation.
Led Light Source For Fiber Optic Cable
US Patent:
2011008, Apr 14, 2011
Filed:
Oct 13, 2009
Appl. No.:
12/587757
Inventors:
Paul J. Dobson - Charlton MA, US
International Classification:
G02B 6/00
US Classification:
362551
Abstract:
A high efficiency fiber optic illuminator comprises a light emitting device with wide angular light distribution, such as an LED, and an outwardly tapered fiber optic waveguide rod with a large calculated numerical aperture, preferably equal to or greater than 0.7 and a ratio of the output diameter to the input diameter of between 1.4:1 and 2.2:1. The smaller, input end of the tapered rod is supported close to the light emitting surface so as to collect the maximum amount of energy. The input end is capable of accepting light at very high angles of incidence, and reducing those angles of incidence so that when the light exits the larger, output end the light may be accepted by standard fiber optic devices with typical numerical aperture values ranging between 0.4 and 0.7.