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US 2001/0033711 A1Published application
Light waveguide with integrated input aperture for an optical spectrometer
AssigneeWavetek Wandel Goltermann Eningen GmbH & Co.
InventorThomas Fuhrmann
Life of this patent
Estimating the term…
Abstract
In a light waveguide, the one end of which comprises a flat entering area for the light to be coupled into the core of the light waveguide, the entering area is narrower than the core diameter of the light waveguide and, around the entering area, the end of the light waveguide is laterally sloped up to the entering surface. Only the light which impinges on this entering area passes into the core and is guided therein.
Claims16
A light waveguide comprising:
- a first end, and
- a second end
- wherein one of the two ends comprises a flat entering area for the light to be coupled into the core of the light waveguide, the entering area is narrower than the core diameter of the light waveguide, and around the entering area the end of the light waveguide is laterally sloped up to the entering surface.
A light waveguide comprising:
- an entering surface, and
- an existing surface,
- wherein the entering surface is narrower than the core diameter of the light waveguide, and around the entering area a vapor deposited opaque metal layer is provided.
An optical spectrometer comprising:
- an exit slit, and
- a detector for the light penetrating through the exit slit,
- wherein the exit slit is formed by the end of the light waveguide, and the detector is disposed at the other end of said light waveguide.
Dependencies are inferred from the claim text.