X-ray shielded projection lens

Details X-ray shielded projection lens X-ray shielded projection lens

1987-08-10

1989-06-20

Arnold, Bruce Y.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

2505151, G02B 2700

Patent

active

048404713

ABSTRACT:
A projection lens for projecting the visual image of the cathode ray tube apparatus (CRT) consists of plastic lens elements, at least one glass lens element which absorbs X-rays from the CRT, and a body tube made of plastic material containing X-ray shielding material such as PbO, Zn, BaSO.sub.4, Pb-Sn alloy or the like.

REFERENCES:
patent: 4686417 (1987-08-01), Noji
patent: 4699477 (1987-10-01), Clarke

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