Diffraction grating ruling engine

Details Diffraction grating ruling engine Diffraction grating ruling engine

1979-07-10

1980-09-02

Haroian, Harry N.

Geometrical instruments

Scriber

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33 24R, 33 27K, 33 21R, B43L 1324

Patent

active

042199336

ABSTRACT:
A device for the fabrication of a concave diffraction grating wherein grating grooves are mechanically ruled on a spherical surface of a diffraction grating blank and wherein a tool for ruling the grating grooves is reciprocated along the spherical surface of the diffraction grating blank, guided by a cylindrical cam, to form grooves having a uniform sectional shape over their whole area, whereby a concave diffraction grating of high diffraction efficiency and little scattering light is fabricated.

REFERENCES:
patent: 1956505 (1934-04-01), Horner
patent: 2303299 (1942-11-01), Finn
patent: 3344526 (1967-10-01), Horsfield
patent: 4012843 (1977-03-01), Harada et al.

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