Plant comparator

Details Plant comparator Plant comparator

1975-12-31

1977-06-14

Corbin, John K.

Optics: measuring and testing

Refraction testing

Prism engaging specimen

350 30, 356244, G01N 2104

Patent

active

040294188

ABSTRACT:
An optical comparator for facilitating identification of plant parasites is provided. The comparator includes a lens system for defining at least one object plane and a viewing region. The lens system produces a magnified image at the viewing region of a specimen, such as a plant leaf, when the specimen is disposed at the object plane. A support member is provided for supporting the lens system, the support member further defining an opening for positioning the specimen at the object plane. The support member is further adapted to position a light source to direct light on the object plane. The support member is constructed and arranged to position a photographic reference at the object plane and thereby provide a juxtaposed magnified image of a specimen and photographic reference at the viewing region.

REFERENCES:
patent: 3565534 (1971-02-01), Chaban
patent: 3580682 (1971-05-01), Iliescu
patent: 3712746 (1973-01-01), Bergeron
patent: 3873212 (1975-03-01), Shell

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