Method and apparatus for forming an optical surface by optical e

Details Method and apparatus for forming an optical surface by optical e Method and apparatus for forming an optical surface by optical e

1996-04-02

1998-03-17

Turner, Samuel A.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01B 902

Patent

active

057293449

ABSTRACT:
The invention counterbalances the defects of optical glass and optical plastic so as to realize a high precision aspherical processing. The optical lens 1 includes a matrix 2 of optical glass and a coating of optical resin material applied to the surface of the matrix 2. A reflective wavefront of a lens plane 4 of the optical lens 1 is measured by means of a interferometer 5. The wavefront from the interferometer 5 is monitored by a computer system 7 to provide monitoring information. The lens plane 4 is irradiated or scanned with a short wavelength, ultraviolet laser beam L in accordance with the monitoring information, whereby the lens plane 4 is processed with the ultraviolet laser beam in non-contact manner into a shape to provide a most appropriate reflective wavefront.

REFERENCES:
patent: 1565533 (1925-12-01), Twyman et al.

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