Beam splitters for endoscopes comprising a dual observation system
AssigneeRichard Wolf GmbH
InventorKlaus Fraissl
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Abstract
This invention relates to beam splitters for use with endoscopes of the kind comprising a dual observation system whereby the image may optionally be adjusted for different proportions of the light intensity for the observer and the joint observer or a film or television camera by means of the optical system of the endoscope. According to the invention the beam splitter comprises two thin glass plates having a partial specular finish or partial reflection, at least one of said plates being shiftable to bring the partial specular finish in confrontation to an angled position in the beam path of the endoscope.
Claims5
In an endoscope of the kind comprising a dual observation system whereby the image may optionally be adjusted for different proportions of the light intensity for the observer and the joint observer or a film or television camera by means of the optical system of the endoscope, a beam splitter comprising two thin glass plates each having a partial reflective coating, at least one of said plates being shiftable to bring its partial reflective coating in confrontation to an angled position in the beam path of the endoscope.
Dependencies are inferred from the claim text.