Adjustable slit assembly for a monochromator

Details Adjustable slit assembly for a monochromator Adjustable slit assembly for a monochromator

1982-11-05

1984-11-20

Evans, F. L.

Optics: measuring and testing

Range or remote distance finding

With photodetection

356334, G01J 304

Patent

active

044835906

ABSTRACT:
An adjustable slit plate assembly for a monochromator is formed by two identical metal plates (P1, P2) each having a set of slits (EX1 to EX6 and EN1 to EX6 respectively) with all the slits disposed on a common circle. The plates (P1, P2) are located and supported on a disc (SM) on a rotatable shaft (SH) at the axis (A) of the circle. The slits are each of minimum length to pass a radiant beam of given energy through the monochromator and each set of slits occupies an arc of substantially minimum length. The shape of each plate is substantially a sector of a further circle whose radius and arc are the minimum necessary to accommodate the slits and the axis. The complete configuration of the plates is formed by etching in a single operation, and a greater number of slit sets can be formed together from a plate of given area than for the prior art case in which the two sets of slits for a slit assembly are formed in a single plate in the shape of a complete disc. A significant cost reduction in the slit assembly is thus achieved.

REFERENCES:
patent: 3508813 (1970-04-01), Smith, Jr. et al.

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