Portable reflex comparator

Details Portable reflex comparator Portable reflex comparator

2005-02-15

2005-02-15

Nguyen, Tu T. (Department: 2877)

Optics: measuring and testing

Inspection of flaws or impurities

Reexamination Certificate

active

06856389

ABSTRACT:
A portable testing device for comparing one reflective part with another to determine whether the reflective part has met quality standards is presented. The portable reflex comparator includes a light source for directing a beam of light to a lock-in amplifier and to a collimating lens. The collimating lens directs light to a reflex part to be tested, for example, one being manufactured by an injection molding machine to be used as an automotive lens. A light beam is reflected back out of the reflective part, through the collimating lens where it converges to the focal plane where it is processed by the amplifier. A voltmeter produces a reading for the operator to see whether the production part meets a certain standardized value.

REFERENCES:
patent: 4022532 (1977-05-01), Montagnino
patent: 4097751 (1978-06-01), Egan et al.
patent: 07-107346 (1995-04-01), None

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