Refractometer

Details Refractometer Refractometer

1996-01-22

1998-04-21

Pham, Hao Q.

Optics: measuring and testing

Refraction testing

Prism engaging specimen

G01N 2141

Patent

active

057423822

ABSTRACT:
A refractometer, comprising a frame structure, in which are arranged a light source, an optical window and a light sensitive detector, whereby the optical window is arranged to be positioned into contact with a solution to be measured and a beam of rays from the light source is arranged to be directed to an interface between the optical window and the solution, whereby part of the ray beam reflects back from the solution and part of it is absorbed partially into the solution and an image is created, in which the location of a borderline between a light and a dark area depends on the critical angle of total reflection, this angle being a function of the concentration of the solution, and whereby an information of the location of the borderline is arranged to be transformed into an electrical form by the light sensitive detector. To provide a ray beam having an even angular distribution, a fibre optic clad rod is arranged between the light source and the optical window, which clad rod consists of one optical fibre, through which the ray beam is arranged to pass to the optical window.

REFERENCES:
patent: 4320291 (1982-03-01), Uramoto
patent: 4639594 (1987-01-01), Schoch et al.
patent: 4640616 (1987-02-01), Michalik
patent: 4699511 (1987-10-01), Seaver
patent: 4699516 (1987-10-01), Bartz et al.
patent: 4844608 (1989-07-01), Smith
patent: 4998022 (1991-03-01), Tregay

Affiliated with

Also associated with

Rating

Refractometer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Refractometer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Refractometer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2063379