Expanded foucault knife-edge test for quantitatively testing an

Details Expanded foucault knife-edge test for quantitatively testing an Expanded foucault knife-edge test for quantitatively testing an

1990-02-27

1990-11-13

Evans, F. L.

Optics: measuring and testing

Lens or reflective image former testing

For optical transfer function

G01B 900

Patent

active

049697374

ABSTRACT:
The historical Foucault knife-edge test enables one to qualitatively ascertain an optical imaging device's characteristics, for example, whether or not it is a source of optical aberrations. The novel method of the present invention, in sharp contrast, complements the historical Foucault knife-edge test, by expanding the test so as to develop a quantitative interpretation of the imaging device's characteristics.

REFERENCES:
Hariharan et al, "Quantitative Application of the Foucault Test to Objective Lenses", Journal of Scientific Instruments, vol. 33, Dec. 1956, p. 506.

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