Automatic brewster angle refractometer

Details Automatic brewster angle refractometer Automatic brewster angle refractometer

2011-03-08

2011-03-08

Toatley, Gregory J (Department: 2877)

Optics: measuring and testing

Refraction testing

C356S131000

Reexamination Certificate

active

07903243

ABSTRACT:
An improved refractometer for automatically determining the refractive index of a test subject by using principles embodied in Brewster's Angle, the refractometer comprising a light source, a light detector, a subject mount for securing the test subject to the device, a positioning device to orient the light source and light detector to the subject such that the angles of the light source and light detector to the subject are substantially identical, a data gathering device to automatically retrieve relevant data regarding the angles of the light source and light detector to the subject and the light intensity of the reflected light, and a computational device to process the data using algorithms taking into account the principles embodied in Brewster's Angle and/or Fresnel Equations in order to arrive at the refractive index of the test subject.

REFERENCES:
patent: 2885923 (1959-05-01), Simmons
patent: 3975097 (1976-08-01), Minto
patent: 4692024 (1987-09-01), Bloss
patent: 5048970 (1991-09-01), Milosevic et al.
patent: 5572314 (1996-11-01), Hyman, Jr. et al.

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