Abstract: A tube attachment for microscopes which facilitates visual microscope work particularly over extended periods and which can be used universally for different types of microscopes and, at the same time, can be produced economically using simple manufacturing techniques, it is suggested that a tube attachment is constructed as a holder which can be adjusted with respect to height and, optionally, with respect to angle and can be fastened directly to a binocular tube of a microscope. The holder includes two carriers which are displaceable axially relative to one another and which have a forehead rest and a chin support or one carrier with the forehead rest for a user, and devices are provided at the carriers for clamping the adjusting movements of the carriers.

Abstract: In order to provide a tube attachment for microscopes which facilitates visual microscope work particularly over extended periods and which can be used universally for different types of microscopes and, at the same time, can be produced economically using simple manufacturing techniques, it is suggested that a tube attachment is constructed as a holder which can be adjusted with respect to height and, optionally, with respect to angle and can be fastened directly to a binocular tube of a microscope. The holder comprises two carriers which are displaceable axially relative to one another and which have a forehead rest and a chin support or one carrier with the forehead rest for a user, and devices are provided at the carriers for clamping the adjusting movements of the carriers.

Abstract: A microscope tube comprises a housing (1) having a lower housing part (3) and an upper housing part (2), input optics (9) mounted on the lower housing part (3), which are provided for coupling to an infinite optical path of a microscope, a tube lens (12) mounted in the upper housing part (2), which is arranged on a common optical axis (OA1) with the input optics (9) and combines ray pencils supplied by the input optics (9) in an intermediate image, so that a finite optical path is formed between the tube lens (12) and the intermediate image, and a prism unit (13) mounted in the upper housing part (2) and arranged following the tube lens (12), said prism unit (13) deflecting the further optical path (OA2) by a solid angle of between 65° and 75° and being arranged in the finite optical path such that the intermediate image is viewable without further intermediate imaging by binocular optics (4) mountable on the upper housing part (2), said upper housing part (2) and said lower housing part (3) being mut