System for frontal illumination

Details System for frontal illumination System for frontal illumination

1992-12-24

1994-11-22

Jones, Larry

Illumination

Revolving

362302, 362804, 362 18, F21V 704

Patent

active

053674391

ABSTRACT:
A frontal illumination system includes a light source and a finite plurality of reflecting surfaces. The reflecting surfaces can be characterized as the inner surfaces of a set of conical frustums arranged to approximate the illumination coming from the inner surface of a hemisphere. The light source is located within or adjacent to at least one of the reflecting surfaces. It emits light that is reflected off opposing portions of at least one, and preferably all, of the surfaces. The system is capable of illuminating the object from a very large solid angle, even though it is disposed in a substantially short axial space.

REFERENCES:
patent: 4617619 (1986-10-01), Gehly
patent: 4706168 (1987-11-01), Weisner
patent: 4914553 (1990-04-01), Hamada
patent: 5143436 (1992-09-01), Baylor et al.

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