Apparatus for producing an accurately aligned aperture of select

Details Apparatus for producing an accurately aligned aperture of select Apparatus for producing an accurately aligned aperture of select

1991-08-02

1993-05-25

Turner, Samuel A.

Optics: measuring and testing

By alignment in lateral direction

With light detector

G01B 1126

Patent

active

052144925

ABSTRACT:
An apparatus having a set of apertures of selected diameters, each aperture being positioned in a multiaperture assembly that can be moved to bring selectively each of these apertures into a path of a beam. This enables control of the diameter of an aperture in a beam and also enables accurate positioning of that aperture so that it is centered on the beam where it is moved to a position of alignment with the beam.

REFERENCES:
patent: 2214728 (1936-10-01), Gille et al.
patent: 4761057 (1988-08-01), Zak et al.

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