Abstract: A rod lens is used for fitting in an endoscopes. The rod lens has a rod-shaped body which is made at least in a section of a flexible, transparent solid piece of plastic material.

Abstract: A method for filling a hollow space in an in an autoclavable medical instrument with an adhesive containing a filler has the steps of providing an adhesive with a low viscosity allowing the adhesive to enter into a hollow space in a medical instrument, providing a filler of solid particles within said low viscosity adhesive, density of said solid particles differ from a density of said low viscosity adhesive, filling that hollow space in said medical instrument with that low viscosity adhesive containing said solid particles, allowing said particles a period of time for crowding together into a minimum of space, and curing said adhesive after said period of time.

Abstract: A rod lens is used for fitting in an endoscopes. The rod lens has a rod-shaped body which is made at least in a section of a flexible, transparent solid piece of plastic material. (FIG.

Abstract: The invention relates to an optical instrument, in particular an endoscopic instrument, with a housing, containing at least one optical system and a hygroscopic substance, and in which an eyepiece is detachably secured to the housing. In order to design an optical instrument of the aforementioned type in such a way that the hygroscopic substance can be integrated easily and safely into the housing, the invention proposes that the hygroscopic substance should be imbedded in a moldable matrix material and that the matrix material caulked with the hygroscopic substance can be replaceably inserted in the eyepiece.

Abstract: The invention relates to an optical instrument, in particular an endoscopic instrument, with a housing (1), containing at least one optical system (2) and a hygroscopic substance, and in which an eyepiece (6) is detachably secured to the housing (1). In order to design an optical instrument of the aforementioned type in such a way that the hygroscopic substance can be integrated easily and safely into the housing (1), the invention proposes that the hygroscopic substance should be imbedded in a moldable matrix material and that the matrix material caulked with the hygroscopic substance can be replaceably inserted in the eyepiece (6).