Apparatus for optoelectronic evaluation of test strips

Details Apparatus for optoelectronic evaluation of test strips Apparatus for optoelectronic evaluation of test strips

1982-03-22

1985-04-09

McGraw, Vincent P.

Optics: measuring and testing

Of light reflection

With diffusion

356243, 422 68, G01N 2147

Patent

active

045098590

ABSTRACT:
Test apparatus for the optoelectronic evaluation of test paper strips such as are used, for example, for determining the blood sugar level, which apparatus may be calibrated in a simple and accurate manner. For dark calibration, there is provided in a position opposite the light source and the photosensor a reflector having a black reflector surface, with the space for receiving the test paper strip - as determined by the holding means - being located between the light source and the photosensor on the one hand and the reflector on the other hand. There are provided accuracy-improving means for the test paper-dependent calibration of the evaluation and display means and a bar code reader comprising a channel for passing therethrough a bar code strip, a light source for illuminating the bar code strip and a photosensor to scan the bar code pattern and having its output connected to the evaluation and display means (FIG. 1).

REFERENCES:
patent: 4015904 (1977-04-01), De Remigis
patent: 4268173 (1981-05-01), Barnard et al.

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