Illuminating device having a curved optical conductor
AssigneeErnst Leitz Wetzlar GmbH
InventorWilli Hagner
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Abstract
An illuminating device for providing a light beam having a substantially uniform cross-sectional flux comprising a light source, an optical conductor, the optical conducting having an inlet and an outlet surface and a curved body portion therebetween, the curved body portion forming at least substantially a portion of a circular ring, optical means for directing light from the light source to the inlet surface of the optical conductor, and means affecting the flux of light arranged transversely and displaceable to the path of the light beam between the light source and the inlet side of the optical conductor whereby the optical conductor provides the uniform flux at the outlet surface.
Claims13
An illuminating device for regulating the color temperature of a light beam having a substantially homogeneous cross-sectional flux comprising:
- (a) a light source,
- (b) a single optical conductor having a uniform cross section, said optical conductor having an inlet and an outlet surface and a curved body portion therebetween, said inlet and outlet surfaces being positioned in planes parallel to one another and said curved body portion forming substantially a full circular ring between said inlet and outlet surfaces,
- (c) optical means for directing light from said light source in a path to the inlet surface of said optical conductor, and
- (d) color filter means affecting the color temperature of light arranged transversely displaceable to the path of the light beam between said light source and said inlet surface of said optical conductor,
- whereby said optical conductor provides said substantially homogeneous flux at said outlet surface.
Dependencies are inferred from the claim text.