Annular illuminator

Details Annular illuminator Annular illuminator

1981-12-10

1983-12-20

Lechert, Jr., Stephen J.

Illumination

Light modifier

Reflector

362298, 362304, 362347, F21V 700

Patent

active

044221355

ABSTRACT:
An annular illuminator comprising a spheric mirror, an elliptic mirror and a circular cylindric mirror. Flux received directly from the source is reflected by the elliptic mirror and then by the cylindric mirror. Flux not directed initially toward the elliptic mirror is first reflected by the spheric mirror and then by the elliptic and cylindric mirrors.

REFERENCES:
patent: 1153443 (1915-09-01), Pole
patent: 1153446 (1915-09-01), Roffy
patent: 3510191 (1970-05-01), Cannon
patent: 4242725 (1980-12-01), Douma et al.
patent: 4320442 (1982-03-01), McCamy
patent: 4344111 (1982-08-01), Ruud et al.

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