Annular illuminator

Details Annular illuminator Annular illuminator

1979-10-11

1982-03-16

Gron, Teddy S.

Illumination

Light source and modifier

Including reflector

350292, 350293, 350294, 350299, 350276R, 350277, 356445, 356446, 362297, 362302, 362303, 362346, 362347, 362349, F21V 705, F21V 708, G02B 5136, G01N 2148

Patent

active

043204422

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: 1153446 (1915-09-01), Roffy
patent: 1279096 (1918-09-01), Fitzgerald
patent: 1434383 (1922-11-01), Harris
patent: 1998967 (1935-04-01), Raynolds
patent: 2143673 (1939-01-01), Baumgartner
patent: 2341658 (1944-02-01), Salani
patent: 3449561 (1969-06-01), Basil et al.
patent: 3707626 (1972-12-01), Delchen
patent: 4022534 (1977-05-01), Kishner
patent: 4087682 (1978-05-01), Kolodziej

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