Optical device for phase detection testing optical system, espec

Details Optical device for phase detection testing optical system, espec Optical device for phase detection testing optical system, espec

1990-05-23

1991-11-19

Evans, F. L.

Optics: measuring and testing

Lens or reflective image former testing

For optical transfer function

G01B 900

Patent

active

050661205

ABSTRACT:
A device for phase detection testing any kind of optical system, in particular an ophthalmic lens, comprises along an optical axis, an emission device which constitutes a light source, a holding station which receives the optical system under test, an array, a receiving device which receives the image observable downstream of the array, and a data processing device which exploits this image by phase detection. Between the holding station and the array is a convergence adapter element and the data processing device includes a ray plotting program and a calibration system allowing for theoretical and manufacturing aberrations due to the convergence adapter element.

REFERENCES:
Applied Optics, vol. 27, No. 3, Feb. 1988, pp. 523-528; K. Omura et al.: "Phase Measuring Ronchi Test", * pp. 525-527 *.
Applied Optics, vol. 23, No. 20, Oct. 1984, pp. 3676-3679; T. Yatagai: "Fringe Scanning Ronchi Test for Aspherical Surfaces", * pp. 3677-3678 *.

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