Light trap, coupling device for a beam path, as well as illumination device and optical observation device
AssigneeCarl Zeiss Meditec AG
InventorsChristian Luecke, Peter Reimer
Life of this patent
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Abstract
A light trap, a device for coupling a first beam path to a second beam path, and an illumination device for an optical observation device, as well as an optical observation device. The light trap is for eliminating or preventing stray light, e.g., in the form of scattered light. In order to be able to further improve the elimination of disruptive stray light in the form of scattered light, the light trap is configured in a special way. It has a filter element, particularly a neutral filter element, which is characterized in that an incident light face of the filter element has a concave radius, whereby the incident light face has a specific curvature.
Claims16
A light trap for eliminating stray light, having a filter element, in particular, a neutral filter element, is characterized in that the light trap is adapted for use in a surgical microscope, in that the incident light face of the filter element has a concave radius and in that the radius of curvature of the incident light face lies in the range of 45 mm to 110 mm.
An illumination device, having a device for generating at least one illumination beam path and having a device for coupling at least one illumination beam path to at least one observation beam path, hereby characterized in that the illumination device is adapted for use in a surgical microscope, in that the coupling device for coupling a first beam path to a second beam path is designed in such a way that the coupling device has a deflecting element and a light trap provided in the region of the deflecting element, in that the light trap has a filter element, particularly a neutral filter element, in that the incident light face of the filter element has a concave radius, and in that the radius of curvature of the incident light face lies in the range of 45 mm to 110 mm.
Dependencies are inferred from the claim text.