Tube for irradiation equipment

Details Tube for irradiation equipment Tube for irradiation equipment

1978-04-07

1979-06-12

Church, Craig E.

Radiant energy

Radiation controlling means

250511, G02B 500, G21K 100, H01J 152, H01J 300

Patent

active

041581431

ABSTRACT:
A tube for irradiation equipment for limiting an emergent beam, with a baseplate, possessing a central aperture, intended for attaching to the equipment, as well as four carrier plates, each of which possesses a limiting edge and a sliding edge located at right angles thereto. The carrier plates are located parallel to the baseplate, the limiting edge of each carrier plate resting against the sliding edge of the adjacent carrier plate and each of the two mutually opposite pairs of carrier plates being displaceable, parallel to the direction of its sliding edges and symmetrically to the center of the transmission aperture, for the purpose of continuously varying the transmission aperture defined by the limiting edges, during which displacement each of the displaced carrier plates carries with it the carrier plate, resting against the limiting edge of the former plate, parallel to the direction of the limiting edge of the latter plate.

REFERENCES:
patent: 3942019 (1976-03-01), Claridge et al.
patent: 4034228 (1977-07-01), Araunor
patent: 4053808 (1977-10-01), Peacock

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