Method and system for structured radiation production including

Details Method and system for structured radiation production including Method and system for structured radiation production including

1984-06-21

1987-05-12

Arnold, Bruce Y.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

250237G, 350166, 356 1, 356376, G02B 528, G01B 1100, G01C 320

Patent

active

046644709

ABSTRACT:
A method and system use a composite filter to produce a beam of light with patterns of different wavelength light mingled together in a controlled manner. The composite filter includes a first interference filter having a first interference pattern on a interference side of a first substrate and a second interference filter having a second interference pattern on an interference side of a second substrate. The first and second interference filters are bonded together with the first and second interference patterns abutting each other. The first interference pattern is made of interference material which passes visible light and reflects infrared light, whereas the second interference pattern passes infrared light and reflects visible light. The composite filter separates and light into alternate patterns of visible light and infrared light which are reflected from the surface of an object to generate surface measurement data.
A method of making a composite filter creates a first interference pattern of interference material at the interference side of the first substrate and places second interference patterns of interference material at the interference side of the first substrate. The second interference pattern is on an interference side of a second substrate which is bonded to the first substrate. The first and second interference patterns are created by selective etching using masks and photolithographic techniques.

REFERENCES:
patent: 3619065 (1971-11-01), Agnew
patent: 4158507 (1979-06-01), Himmel
patent: 4175862 (1979-11-01), DiMatteo et al.
patent: 4180329 (1979-12-01), Hildebrand
patent: 4277813 (1980-10-01), Pirlet
patent: 4349277 (1982-09-01), Mundy et al.
patent: 4370025 (1983-01-01), Sato et al.

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